VTech Telecommunications 80-4290-00 900 MHz Cordless Phone Base Unit User Manual User Guide

VTech Telecommunications Ltd 900 MHz Cordless Phone Base Unit User Guide

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VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 1 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.VT3921InternalProduct SpecificationNOT FOR EXTERNAL RELEASEDocument ID: SPE-6500.DOCPRC #:Note: All rights reserved. No part of this publication may be reproduced or transmitted in any form or byany means. The only controlled copy of this document is kept in electronic form on the VTECH computernetwork. All printed copies are uncontrolled documents and are not updated. This Procedure is theproperty of VTECH Engineering Canada Ltd., and shall be returned upon request.Prepared By Lance FujiokaTitle Project AssistantApproved By Jack MinneyTitle Product Manager

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 2 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.Revision HistoryRevision No Description Page Effective DatePreliminary JUN-991 First Release 15-JUN-99Table of Contents1. Overview....................................................................................101.1 General Description................................................................................... 101.2 System Components ................................................................................. 101.3 System Supports Add – On Components................................................ 101.4 Feature List ................................................................................................ 101.4.1 System Features..................................................................................................................101.4.2 Controller Features .............................................................................................................101.4.3 Cordless Phone Features ...................................................................................................111.4.4 Speaker Phone Features.....................................................................................................112. Speaker Phone..........................................................................122.1 General Description................................................................................... 122.2 Product Overview ...................................................................................... 123. User Features............................................................................133.1 User Feature Overview.............................................................................. 133.2 Installing The Speaker Phone................................................................... 143.3 Using The Speaker Phone ........................................................................ 16 Speaker Phone Keys........................................................................................... 183.5 Making Internal (COM) Calls ..................................................................... 193.6 Making Outside Calls ................................................................................ 203.7 SPEAKER Button....................................................................................... 20

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 3 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.3.8 Global Hold................................................................................................. 203.9 Private Hold................................................................................................ 213.10 Call Transfer............................................................................................... 213.11 Call Waiting ................................................................................................ 223.12 Automatic Answer ..................................................................................... 233.13 Redial.......................................................................................................... 233.14 Call Connect/Pick Up................................................................................. 233.15 Store Last Number Dialed......................................................................... 243.16 ‘One Touch’ Storing .................................................................................. 243.17 ‘One Touch’ Dialing................................................................................... 253.18 Uses Of System - Wide Directory............................................................. 253.19 Dialing System - Wide Directory............................................................... 253.20 Ring Paging................................................................................................ 263.21 Page All....................................................................................................... 263.22 Extension Paging....................................................................................... 263.23 Conference Calls ....................................................................................... 273.24 Call Forwarding.......................................................................................... 283.25 Callback/Camp - On................................................................................... 283.26 COM Callback/Camp - On.......................................................................... 293.27 Mute 293.28 Release Line Privacy................................................................................. 293.29 Do Not Disturb (DND) ................................................................................ 293.30 Ring Blocking............................................................................................. 30

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 4 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.3.31 Voice Mail Mode......................................................................................... 303.32 Voice Mail Message Retrieving................................................................. 303.33 Set Up - Line Ring Preference .................................................................. 303.34 Set Up - Line Select Order ........................................................................ 314. Cordless System Phone With CID ...........................................324.1 Product Overview ...................................................................................... 324.2 Specifications ............................................................................................ 324.2.1 RF Specifications ................................................................................................................324.2.2 Audio Specifications ...........................................................................................................334.2.3 Digital Specifications ..........................................................................................................334.2.4 Caller ID specifications.......................................................................................................334.3 General Features ....................................................................................... 334.4 Unique Features......................................................................................... 344.5 Features Not Provided............................................................................... 344.6 System User Features ............................................................................... 344.6.1 Line Selection ......................................................................................................................344.6.2 Internal Calls........................................................................................................................344.6.3 Transferring Calls................................................................................................................344.6.3.1 Method 1..............................................................................................................354.6.3.2 Method 2..............................................................................................................354.6.4 Global Hold Pick-Up............................................................................................................354.6.5 Connect ................................................................................................................................354.6.6 Broadcast .............................................................................................................................354.6.7 Call Forwarding ...................................................................................................................354.6.8 Callback................................................................................................................................354.6.8.1 Extension Callback.............................................................................................354.6.8.2 Com Callback......................................................................................................364.6.9 Do Not Disturb (DND)..........................................................................................................364.6.10 Redial 364.6.11 Memory Features.................................................................................................................364.6.11.1 Two Touch Memory Dialing ..........................................................................364.6.11.2 Two Touch Memory Programming...............................................................364.6.11.3 Four Touch Memory Dialing .........................................................................364.6.11.4 Four Touch Memory Programming..............................................................364.6.12 Voice Mail Features.............................................................................................................364.6.12.1 VMS Enable.....................................................................................................374.6.12.2 Retrieving VMS Messages ............................................................................374.6.12.3 Transferring A Call To A Voice Mail Box .....................................................37

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 5 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.4.6.13 Call Waiting..........................................................................................................................374.6.14 Ring Page.............................................................................................................................374.7 Functional Layout For Handset ................................................................ 374.8 Handset Function Key Description .......................................................... 374.8.1 Phone Key............................................................................................................................374.8.2 Hold Key...............................................................................................................................384.8.3 Off Key384.8.4 Prog Key...............................................................................................................................394.8.5 Caller ID Key.........................................................................................................................394.8.6 Mute Key...............................................................................................................................394.8.7 Mem Key...............................................................................................................................394.8.8 Clear/Del Key........................................................................................................................404.8.9 Redial Key ............................................................................................................................404.8.10 Volume  Key....................................................................................................................404.8.11 Volume  Key.....................................................................................................................404.9 Special Handset Function Keys ............................................................... 414.9.1 Tone / / * Key ...................................................................................................................414.9.2 # / Key...............................................................................................................................414.9.3 7 /  (Time) Key...................................................................................................................414.9.4 9 /  (View) Key..................................................................................................................415. LCD Display...............................................................................415.1 LCD Display Characters............................................................................ 425.2 General (Non Mode Specific) LCD Messages ......................................... 425.2.1 Low Battery Warning...........................................................................................................425.2.2 Mute Modes..........................................................................................................................435.2.3 Volume Setting ....................................................................................................................435.2.4 Phone Off-Hook Indicator...................................................................................................446. Special Features .......................................................................446.1 Battery ........................................................................................................ 446.2 In The Dark (Easy-Answer) ....................................................................... 446.2.1 Easy-Answer ........................................................................................................................446.2.2 Automatic Keypad And LCD Illumination..........................................................................446.3 Channel Searching (Out–Of–Range)........................................................ 456.4 Fast Charge For Handset Battery............................................................. 456.5 Auto Hang-Up............................................................................................. 46

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 6 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.6.6 Line (Extension) In Use Indication ........................................................... 467. Dialing........................................................................................467.1 Accessing The Line Prior To Dialing ....................................................... 467.1.1 Digit Keys.............................................................................................................................467.1.2 Memory Location Dialing....................................................................................................477.1.3 Caller ID Memory Dialing ....................................................................................................477.1.4 Redial 477.2 Number Entry Before Line Access........................................................... 487.2.1 Digit keys..............................................................................................................................487.2.2 Memory Location Dialing....................................................................................................487.2.3 Caller ID Memory Dialing ....................................................................................................497.2.4 Redial 508. Programming ............................................................................508.1 Programming Speed Dial Number............................................................ 508.1.1 Unsuccessful Programming...............................................................................................508.1.2 Special Conditions ..............................................................................................................518.1.3 Programming Ringer Types ...............................................................................................529. Caller ID Display........................................................................529.1 Caller ID Memory Viewing......................................................................... 529.2 Caller ID Memory Clearing ........................................................................ 549.2.1 Deleting Caller ID Memory Locations................................................................................549.2.2 Caller ID Memory Overflow.................................................................................................559.3 Caller ID With Call Waiting........................................................................ 559.3.1 Basic Operation...................................................................................................................559.3.2 Switching Calls....................................................................................................................559.4 Caller ID Messages.................................................................................... 56Test 1 569.4.1 Message: UNAVAILABLE....................................................................................................579.4.2 Message: PRIVATE..............................................................................................................589.4.3 Message: TRANSMISSION ERROR....................................................................................589.4.4 Message: ## NEW CALLS...................................................................................................589.5 Receiving Caller ID While In Other Modes............................................... 599.5.1 MEM (Memory Dialing) MODE............................................................................................599.5.2 Caller ID Mode......................................................................................................................599.5.3 Program Mode .....................................................................................................................59

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 7 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.9.5.4 Predial 6010. Controller...................................................................................6110.1 General Description................................................................................... 6110.2 Product Overview ...................................................................................... 6111. Operator Features.....................................................................6211.1 Operator Feature Overview....................................................................... 63Feature...............................................................................................................................................63Description........................................................................................................................................6311.2 Record Voice Messages............................................................................ 6411.2.1 Examples of Voice Messages: ...........................................................................................6511.3 Receptionist Mode..................................................................................... 6511.4 Voice Message........................................................................................... 6611.5 Fax Message .............................................................................................. 6611.6 Set Up – Hold Time.................................................................................... 6611.7 Set Up – Hold Message Time.................................................................... 6711.8 Call Ring Through...................................................................................... 6711.9 Line Privacy Override................................................................................ 6711.10 Music On Wait............................................................................................ 6811.11 Night Mode ................................................................................................. 6811.12 System – Wide Directory........................................................................... 6911.13 Call Screening............................................................................................ 6911.14 Call Screening – Security Code................................................................ 7011.15 Set Up – Optional Mailbox......................................................................... 7011.16 Dedicated Fax Line.................................................................................... 7111.17 Line Termination........................................................................................ 72

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 8 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.11.18 Program Handset Security Code.............................................................. 7211.19 Reset Feature............................................................................................. 7311.20 Operation for Pulse Dialing....................................................................... 7312. Adapter Box...............................................................................7512.1 General Description................................................................................... 7512.2 Product Overview ...................................................................................... 7513. User Features............................................................................7513.1 User Feature Overview.............................................................................. 7513.2 Installing The Adapter Box ....................................................................... 7613.3 Using Standard Telephone Equipment With The Adapter Box.............. 8113.4 Selecting Line ............................................................................................ 8113.5 Making Internal (COM) Calls ..................................................................... 8113.6 Making Outside Calls ................................................................................ 8213.7 Global Hold................................................................................................. 8213.8 Private Hold................................................................................................ 8213.9 Global Hold Pickup.................................................................................... 8313.10 Call Transfer............................................................................................... 8313.11 Call Waiting ................................................................................................ 8413.12 Redial.......................................................................................................... 8413.13 Call Connect/Pickup.................................................................................. 8513.14 Pulse/Tone Selection For Programmable Numbers ............................... 8513.15 Speed Dialing And Storing........................................................................ 8513.16 Uses Of System – Wide Directory ............................................................ 86

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 9 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.13.17 Dialing System – Wide Directory.............................................................. 8713.18 Ring Paging................................................................................................ 8713.19 Broadcast ................................................................................................... 8713.20 Conference Calls ....................................................................................... 8713.21 Call Forwarding.......................................................................................... 8813.22 Callback/Camp – On.................................................................................. 8813.23 Do Not Disturb (DND) ................................................................................ 8913.24 Voice Mail Mode......................................................................................... 8913.25 Flash Time Adjust...................................................................................... 8913.26 Set Up – Line Ring Preference.................................................................. 9013.27 Set Up – Line Select Order........................................................................ 9013.28 Using Faxes And Modems ........................................................................ 9113.28.1 Fax Operations ....................................................................................................................9113.28.2 Receiving A Fax...................................................................................................................9113.28.3 Sending A Fax......................................................................................................................9313.28.4 Modem Operations..............................................................................................................9413.29 Adapter Box Feature Flow Chart .............................................................. 95

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 10 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.1. Overview1.1 General DescriptionThe VT3921 System is a three line, fourteen extension PBX system that supports up to thirteen 3 lineCordless System Phones and one desktop system phone or combination of any 14 devices of CordlessPhones, Speaker Phones, Door Phone, fax, PC modems, etc. The VT3921 System is installed on any inhouse one pair existing telephone wire and allows simultaneous 4 voice connections on the same existingin house one pair telephone wire (3 outside lines and one internal intercom between extensions).1.2 System ComponentsThe VT3921 System Includes:• 1 Controller• 3 Cordless Handsets• 3 Cordless Charging Cradles• 1 System Speaker Phone• 1 Adapter Box1.3 System Supports Add – On Components• The VT3921 System can support various combinations of the following additional devices on up to 14total stations.• Additional Adapter Boxes (to connect to any off the shelf devices such as fax machines, PC modems,answering machines, single line telephones, etc. and converts them into full PBX 3 line systemdevices)• Additional 3 line Cordless System Phones• Speaker Phones• Door Phones• Voice Mail1.4 Feature List1.4.1 System Features• 3 CO Lines, 14 Stations, 1 COM (intercom) Line• 3 Cordless System Phones built into the Controller• Single twisted pair connection to all other stations• Complete business telephone features• Automatic gax switching on all lines• Type 1 & Type 2 Caller ID• Auto Attendant• Voice Mail ready• Existing in-house wiring can be used either for CO line connections or adopted for connection toremote stations1.4.2 Controller Features• 3 CO lines• Auto Attendant, user recordable on all 3 lines

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 11 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.• User recordable announcements during Hold on all 3 lines• Music On Hold interface (to connect to any FM radio, CD player, etc.)• Fax switch on all 3 lines• Power fail interface• 3 built in Cordless System Phone base units in Controller• Memory and feature backup in EPROM• Voice Mail or answering machine support• Night Mode on Auto Attendant• Parallel set detect (see Controller product overview, section 10.2)• RS232 connection for attachment to computers (future)• Internal electronic Music On Hold (for markets other than U.S. and Canada)• Electrical termination of unused lines1.4.3 Cordless Phone Features• Complete System Phone features on all 3 lines (Hold, Transfer, Page, etc.)• 2 LCD line display• Caller ID Type 1 & 2• System line status on display• Individual detached charging cradles (for remote use)• 900 MHz digital cordless technology• Voice Mail or Caller ID message display on all 3 lines1.4.4 Speaker Phone Features• 3 CO Lines & Com Line• Distinctive/Differentiated Rings• Line Privacy/Extension privacy• Private Hold• Handsfree Dialing and Paging. Full speaker phone features• Automatic Line Select Order• Global Hold (accessed from any extension)• Global Conferencing (with 2 or all extensions with an outside line)• Line Privacy Override• Call Connect Pick Up• Call Waiting• Mute/Do Not Disturb• Tone/ Pulse and Flash• Group or Individual Speaker Paging• Handsfree Answer on InterCOM• Hold Reminder• Distinctive Message Light• Line Status Indicator Light• System Speed Dialing accessed from all extensions (40 numbers)• Personal Speed Dialing per Extension (30 numbers)• Transfer (one touch/manual)• Headset Compatible• Call Back-Camp On• Move Phones/Extensions to different rooms without rewiring• Special Door Phone “Answer”,”Lock”, or Release Lock keys

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 12 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.2. Speaker Phone2.1 General DescriptionThe Speaker Phone is a full function 3 line system phone for use with the VT3921 system. One SpeakerPhone is included with the VT3921 and is used as the Operator Phone (ext.0). The Operator Phone isused to program all of the Operator Features shown in the Controller Section2.2 Product OverviewThe Speaker Phone has a speaker for hands free dialing, listening to calls on hold, paging, and fullSpeaker Phone for hands free conferencing.The Speaker Phone supplied with the VT3921 system is set to station “0” which is the operator phone andreceptionist phone. Station “0” must always be a system Speaker Phone. Additional Speaker Phones canbe added to the system if needed. All additional Speaker Phones must be set to unique station numbers,Station 4 or higher (stations 1,2, & 3 are established for the three cordless phones, included with theVT3921.The Speaker Phone is a special system phone that works only with this system and has most of thefeatures of any large PBX system.There are buttons on the phone for selecting Line 1, Line 2, Line 3, or COM (intercom) with lights underthe keys that are on when the line is in use. When the handset is taken off-hook or the speaker button ispressed, the first available outside line is selected in line selection preference. The default line selectionorder is Line 1, Line 2, Line 3, and then COM. The line select order can be changed using the keyboard.When the phone is ringing and the handset is taken off-hook or the speaker button is pressed, the linethat is ringing is automatically selected. Ringing can be delayed 0, 2, 4, 6, or never ring by programming itfrom the keyboard. The default is 0 ring delay. The ring volume can be adjusted using the switch in theback of the phone. To turn off the ring, the ring blocking mode can be turned on using the keyboard (referto users manual).The phone can be taken off hook or placed back on hook in the speaker mode by pressing the speakerbutton at any time. There is a light next to the speaker to indicate if the phone is off hook in the speakermode and a volume adjustment near by.The PAGE button is used to page an individual station or all stations with speakers.Many features can be programmed using the keyboard as described in the “USER FEATURES“ section.There are 15 one touch memories and 15 two touch memories that are dedicated to each Speaker Phone.The numbers are stored into memory as described in the “USER FEATURES“ section. The PROGRAMlight is on when programming the memory is in progress and has not been completed. Going off-hookresets all programming modes. System memories can be accessed by the Speaker Phone but can onlybe stored by the operator phone.The MESSAGE light and MESSAGE button are set up to work with Voice Mail Systems.Each station has two extension numbers with distinct rings. The 8XX extension rings twice for anextension ring and the 9XX extension rings three times. The Controller is programmed to assign amailbox to each extension when Voice Mail is installed.

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 13 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.When the Auto-Answer mode is turned on, the SPEAKER button light will blink and all COM calls will beanswered automatically by going off hook and turning on the speaker. There is an AUTO-ANS button totoggle this mode.There are DOOR and LOCK buttons on the phone for easy use with the optional Door Phone.The TONE/PULSE switch determines the format that the Controller presents to the CO line and does notaffect the internal system operation.There are buttons to control most of the ordinary PBX functions such as CONNECT, REDIAL, HOLD,MUTE/DND, FORWARD, PAUSE, FLASH, and CALL BACK. The use of these buttons is explained in the"USER FEATURES” section.3. User Features3.1 User Feature OverviewFeature DescriptionSELECTING LINES Selects the line number.MAKING INTERNAL(COM) CALLS Places a call to another extension (internal).MAKING OUTSIDECALLS Places a call to an outside number.SPEAKER PHONE Used for hands-free dialing, and hands-free waiting when put on hold.PRIVATE HOLD Places a call on hold that can only be retrieved from that station.GLOBAL HOLD Places a call on hold that can be retrieved from any station.CALL TRANSFER Transfers an incoming call to another extension.CALL WAITING Receives calls while you are on another line.AUTOMATIC ANSWER Automatically answers the call, hands-free.REDIAL Dials the last number called.CALL CONNECT/PICKUP Connects/picks up other ringing extensions.STORE LAST NUMBERDIALED Stores the last number dialed.‘ONE TOUCH’STORING Stores frequently called numbers.‘ONE TOUCH’ DIALING Dials frequently called numbers.SYSTEM-WIDEDIRECTORY Dials frequently used numbers from any station.RING PAGING Causes all non-busy phones to ring.PAGE ALL Broadcasts on the COM line to all Speaker Phones.EXTENSION PAGING Allows a phone to broadcast a message over another extension’s speaker.CONFERENCE CALLS Connects multiple parties together in a phone conversation.CALL FORWARDING Redirects calls to another station’s extension.CALLBACK/CAMP-ON Rings back when the busy extension number becomes free.COMCALLBACK/CAMP-ON Rings back when the COM line becomes free.MUTE Prevents conversation from going to the outside caller.RELEASE LINEPRIVACY Temporarily allows any other extension to join the conversationDO NOT DISTUR (DND) Turns off all rings to a particular station.RING BLOCKING Turns off all rings to the Speaker Phone’s speaker.

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 14 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.VOICE MAIL MODE Directs calls to the optional Voice Mail System (VMS)VOICE MAIL MESSAGERETRIEVING Allows extensions to check any voice mail messages left for them.SET UP - LINE RINGPREFERENCE Selects which telephone lines will ring at a particular station.SET UP - LINE SELECTORDER Sets up order of available line selection.3.2 Installing The Speaker PhoneCarefully follow the instructions described in this section to ensure proper operation of the SpeakerPhone. _______________________Install the Controller BEFORE installing the Speaker Phone or you may damage the Speaker Phone.WARNING: Do not connect Speaker Phones to the telephone company lines or the equipment may bedamaged. The Speaker Phone is for use with the Vtech 3921 Series Controller. It is not to be connected directlyto telephone company line.Coil Cord Connection1. Insert the coil cord into the modular jack located on the side of the housing.2. Connect the other end into the modular jack located on the receiver.3. Assign a station number to each Speaker Phone (note: the main speaker phone should be set onext.’0’).To set the station number for the Speaker Phone, use a small tool (i.e. a small screwdriver, or astraightened paper clip) to slide the four station switches located on the side of the phone case (seediagram below). The configuration of the four switches sets the station number for the Speaker Phone.2341READ IMPORTANT NOTE BELOW!EVERY STATION NUMBER ON SPEAKER PHONES AND ADAPTER BOXES MUST BE DIFFERENT.Devices with the same station number will not operate properly.Refer to Table 1- Assigning Station Numbers on the next page.The station switches can be decoded as follows:

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 15 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.StationNumber Station Switch Positions ExtensionNumber ExtensionNumber Switch PositionsSW1 SW2 SW3 SW4 Primary Secondary01DWN DWN DWN DWN 800190011DWN DWN DWN UP 801 9012DWN DWN UP DWN 802 9023DWN DWN UP UP 803 9034DWN UP DWN DWN 804 9045DWN UP DWN UP 805 9056DWN UP UP DWN 806 9067DWN UP UP UP 807 9078UP DWN DWN DWN 808 9089UP DWN DWN UP 809 90910 UP DWN UP DWN 810 91011 UP DWN UP UP 811 91112 UP UP DWN DWN 812 91213 UP UP DWN UP 813 913NOTUSED UP UP UP DWN not used not usedNOTUSED UP UP UP UP not used not usedTable 1 - Assigning Station Numbers1A single 0 will also dial station number 0. In order to access operator features, station number 0 must bea Speaker Phone, not an Adapter Box4. Plug the Speaker Phone Power Jack (figure 1) in any telephone jack in the building (figure 2). (TheController must be installed BEFORE the Speaker Phone is plugged into the Power Jack.)Test each telephone before plugging in the next telephone. If it does not work, first check that everystation number is unique and then unplug the telephone and plug it in again.Figure 1The Power Jack is a special jack that provides AC power to the Speaker Phone. Important Note:The Speaker Phone will not operate without the Power Jack.5. Plug the AC Transformer into an AC outlet.

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 16 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.Figure 26. Plug one end of the Speaker Phone Wire (included) into the Power Jack (figure 3).Note: The Speaker Phone Wire is a special telephone cable with six conductors. You may purchaseadditional six conductor cables of various sizes from electronics stores such as Radio Shack.7. Plug the other end of the Speaker Phone Wire into the Speaker Phone (figure 3).Figure 3Note: Every time the Controller is turned on, all the red lights on the Speaker Phone will flash until thesystem completes its self-configuration. (This may take up to five minutes.) Every time the SpeakerPhone is plugged into the system, the red lights on the Speaker Phone will blink sequentially once.3.3 Using The Speaker PhoneThis phone is capable of quickly accessing all of the advanced business telephone features that areusually only associated with larger systems.Speaker Phone features include:

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 17 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.• Private and Global Hold• Call Transfer• Call Waiting• Automatic Answer• Redial• Call Connect/Pick-Up• One Touch Memories• System Wide Directory• Ring Paging•Page All• Extension Paging• Line Privacy• Conference Calls• Call Forwarding• Callback/Camp-On• COM Callback/Camp-On• Mute• Do Not Disturb• Ring Blocking• Voice Mail Mode• Voice Mail Message Retrieving• Line Ring Preference• Line Select Order• Full Speaker Phone Communication

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 18 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.3.4 •••• Speaker Phone KeysPhone Key FunctionSHIFT Used to access an additional fourteen memory locations.CALLBACK Used to toggle Callback/Camp - on and COM Callback/Camp - on features.MEMORY Stores and retrieves telephone numbers from the System - Wide Directory.Also used to store ‘one touch’ memories.FLASH Provides a half - second “on hook” to the telephone company.AUTO - ANS Used to toggle the Automatic Answer feature.PAUSE second pause into a memory location.FORWARD Used to forward (redirect) calls to a desired extension.MUTE/DND Mute and Do Not Disturb (DND).HOLD Places current call on hold.COM Selects internal line.LINE 1 Selects outside line one.LINE 2 Selects outside line two.LINE 3 Selects outside line three.MESSAGE Used to toggle the Voice Mail Mode feature, and to retrieve voice mailmessages sent to an extension.FEATURE Used to access features.REDIAL Dials previously dialed number.CONNECT Answers calls ringing on other stations.PAGE Used to Page All (broadcast paging), and to page a specific extension.SPEAKER Used to activate the speaker for hands - free dialing and for hands - freewaiting while on hold and for hands-free communication.

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 19 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.3.5 Making Internal (COM) CallsPlaces a call to another extension (internal).1. Go off hook.2. Press COM Line Select Key.You should hear a different higher pitched dial tone.3. Press ‘one touch’ extension number or press SHIFT, followed by the ‘one touch’ extension number.You can also enter an extension number on the touch-tone keypad.One TouchKey Ext.Number0800SHIFT, 0 9001801SHIFT, 1 9012802SHIFT, 2 9023803SHIFT, 3 9034804SHIFT, 4 9045805SHIFT, 5 9056806SHIFT, 6 9067807SHIFT, 7 9078808SHIFT, 8 9089809SHIFT, 9 90910 810SHIFT, 10 91011 811SHIFT, 11 91112 812SHIFT, 12 91213 813SHIFT, 13 913On Speaker Phones you can dial another extension number by pressing the COM Line Select Key andthen entering an extension number without hanging up. If you receive a fast busy signal after a validextension number, then the extension number you are calling is in the Do Not Disturb mode. See Do NotDisturb for details.

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 20 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.3.6 Making Outside CallsPlaces a call to an outside number.1. Go off hook and dial.OR1. Before dialing, select a specific line by pressing an available Line Select Key.You will hear dial tone. If the red line light is on, then that particular line is not available.2. Either pick up the handset and dial, or dial then pick up the handset.The system will automatically select an available line for you. To adjust which line is selected first, refer toSet Up - Line Select Order.3.7 SPEAKER ButtonEnabling the Speaker is useful for hands-free dialing, or to receive a voice page call from anotherextension (hands-free waiting while on hold) or to make conference calls without the use of the handset.For Hands-Free Dialing1. Press the SPEAKER button.The SPEAKER light will turn on to notify you that the Speaker is enabled. The system will automaticallyselect an available line, and a dial tone should be heard on the speaker.2. Dial out, hands free.OR1. Before dialing, select a specific line by pressing an available Line Select Key.If the red line light is on, then that particular line is not available. When an available Line Key ispressed, then the selected line light will turn on, and the SPEAKER light will turn on to notify you thatthe Speaker is enabled. A dial tone should be heard on the speaker.2. Dial out, hands free.NOTE: To talk to the other party when they answer, you may use the Speaker mode or for privacy youmay pick up the handset and speak into the handset’s microphone.For Waiting While on Hold1. When you are placed on hold, press the SPEAKER button, and hang up the handset.The SPEAKER light will turn on to notify you that the Speaker is enabled. The speaker will nowmonitor the call on which you are holding. For example, if the other party is a company that playsmusic for callers on hold, then the music will be heard over the Phone’s Speaker, and you can listen,hands free, for the company to return to your call.2. When you hear the other party return to your call, you may speak directly to the phone or pick up thehandset to resume the conversation privately.3.8 Global HoldPlaces a call on hold that can be retrieved from any station.1. Press HOLD.The red line light will blink slowly on all stations to indicate that the call has been placed on Global Hold.Retrieve a Global Hold Call

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 21 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.1. Press the Line Select Key of the held line on any station.3.9 Private HoldPlaces a call on hold that can only be retrieved from that station.1. Press HOLD.2. Press HOLD again.The red line light will blink quickly only on your phone to indicate that the call has been placed onPrivate Hold. All other stations will have a solid red line light.Retrieve a Private Hold Call1. Press the Line Select Key of the held line.3.10 Call TransferTransfers an incoming call to another extension.1. Press HOLD.2. Press the appropriate 'one touch' memory key, which allows you to enter extensions with a single keypress.You can also enter an extension number on the touch-tone keypad, if you desire.OR2. Press SHIFT, followed by the ‘one touch’ extension numberOne TouchKey ExtensionNumber0800SHIFT, 0 9001801SHIFT, 1 9012802SHIFT, 2 9023803SHIFT, 3 9034804SHIFT, 4 9045805SHIFT, 5 9056806SHIFT, 6 9067807SHIFT, 7 9078808SHIFT, 8 9089809SHIFT, 9 90910 810SHIFT, 10 91011 811SHIFT, 11 911

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 22 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.12 812SHIFT, 12 91213 813SHIFT, 13 9133.Option 1Hang up.If the transferred call is not answered, the call will ring back at your extension.OROption 2Stay on the line, announce the transfer, and hang up.When you hang up, the caller will automatically be connected to the extension you entered.OROption 3Stay on the line and announce the transfer. If the person at the extension is not able to talk, when theextension hangs up, a beep in the earpiece notifies you that you are reconnected to the caller to take amessage.OROption 4If the extension is busy, reconnect to the caller by pressing the appropriate Line Select Key.OROption 5If the extension is busy, press HOLD and perform step 2 again.3.11 Call WaitingAllows you to receive calls while you are on another line.1. If you hear two or three beeps* in the earpiece while on another line, you can do one of the following:Option 12. Ignore the beep and continue your conversation.If you ignore the beep, then the system will handle the call differently depending on which features areenabled.a) If no features are enabled, then the system will ring all phones followed by the answering machine (ifavailable).b) If Night Mode is enabled and an answering machine is available, then the system will ring theanswering machine directly.c) If Receptionist Mode is enabled, then the system will ring the operator’s extension, station 0.d) If a Voice Mail System (VMS) is available and VMS mode is enabled for that station, then the systemwill ring the VMS directly.OROption 22. Press HOLD to place the first call on hold.3. Press the Line Select Key of the line that was ringing your extension (the red line light will be blinkingquickly).OROption 3

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 23 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.2. Press HOLD to place the first call on hold.3. Hold down the hook switch until the phone rings. Then release the hook switch to connect to thesecond call.To return to the original call, press the Line Select Key of the held line.*Two beeps indicate a primary extension ring, 8XX.Three beeps indicate a secondary extension ring, 9XX.This feature is ideal if two people are sharing one phone by assigning an 8XX or 9XX extension for each.3.12 Automatic AnswerAllows you to communicate hands-free on the COM line automatically.Enable Automatic Answer1. While the receiver is hung up (“on hook”), press AUTO-ANS.The phone will beep once and the SPEAKER light blinks slowly to indicate that Automatic Answer isenabled.Disable Automatic Answer1. While on hook, press AUTO-ANS.The phone will beep twice and the SPEAKER light will turn off to indicate that Automatic Answer isdisabled.If Automatic Answer is enabled, all COM line calls will be automatically answered. When a person dialsyour phone, you will be notified by a tone. Without any intervention on your part, the speaker will beactivated and you will be able to hear the calling party. In order for the calling party to hear your response,you must pick up and use the handset.3.13 RedialDials the last number called.1. Go off hook.2. Press REDIAL.Note: The Redial button does not redial ‘One Touch’ or System-Wide Directory. numbers.3.14 Call Connect/Pick UpAllows you to connect to another ringing station. Also known as “Call Pick Up”.Global Connect1. Go off hook.2. Press CONNECT key, then CONNECT key once again.Extension Connect1. Go off hook.2. Press CONNECT key.3. Using the touch tone keypad, enter the ringing station's extension number or press the 'one touch'memory key corresponding to the last digits of the extension number.

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 24 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.OneTouchKeyExtensionNumber0800/9001801/9012802/9023803/9034804/9045805/9056806/9067807/9078808/9089809/90910 810/91011 811/91112 812/91213 813/913NOTE: You cannot Call Connect to calls ringing back either from a hold or calls ringing back after anunsuccessful transfer. You cannot Global Connect to COM calls or transferred calls.3.15 Store Last Number DialedStores the last number dialed.1. While on hook, press MEMORY key.The phone will beep once and the red PROGRAM light will turn on.2. Press ‘one touch’ memory key (0-14).The telephone number is stored in memory locations 0-14. Proceed to step 3.OR2. Press SHIFT key, followed by ‘one touch’ memory key.The telephone number is stored in memory locations 15-29 (0 for 15, 1 for 16, 2 for 17…14 for 29).3. Press REDIAL key.The phone will beep twice and the red PROGRAM light will turn off to confirm that the number wasstored correctly.3.16 ‘One Touch’ StoringStores frequently called numbers.1. While on hook, press MEMORY key.The phone will beep once and the red PROGRAM light will turn on.2. Press ‘one touch’ memory key (0-14).The phone will beep once. The telephone number is stored in memory locations 0-14.OR2. Press SHIFT key, followed by ‘one touch’ memory key.The phone will beep once after SHIFT, and once again after ‘one touch.’ The telephone number isstored in memory locations 15-29.3. Using the touch-tone keypad, enter the telephone number (up to 16 numbers and pauses).The PAUSE key puts a four-second pause into the number.To enter multiple telephone numbers repeat steps 2 and 3.

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 25 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.4. Press MEMORY key.The phone will beep twice and the red PROGRAM light will turn off.Additional ‘one touch’ memory keys can be pressed at any time while you are still off hook, e.g. you maystore your bank account number in a different memory location. A pull out card on the side of the phone isprovided to list the directory of ‘one touch’ memory keys.3.17 ‘One Touch’ DialingDials frequently called numbers.1. Go off hook.2. Press ‘one touch’ memory key.This dials the telephone number in memory locations 0-14.OR2. Press SHIFT key, followed by ‘one touch’ memory key.This dials the telephone number in memory locations 15-29.3.18 Uses Of System - Wide DirectoryThe System- Wide Directory can be accessed or used by everyone who uses the system from anyextension phone.There are two general methods to use the System-Wide Directory.Method 1A list of all commonly called numbers can be compiled and stored in directory storage locations. Thedirectory location list can be given to everyone who uses the system.Method 1 Example:01 - Building Maintenance02 - Pizza Delivery03 - Major Customer No. 104 - Major Customer No. 205 - Off-site officeMethod 2Individuals can be assigned directory locations. Then users can access their own stored directorylocations from any station in the system.Method 2 Example:00-09 Jim's numbers10-19 Scott's numbers20-29 Tara's numbersJim could go to any station in the system and dial his System-Wide Directory numbers.ONLY THE OPERATOR, Phone Station 0, can store numbers in the System-Wide Directory. Refer to theOperator’s Manual for details on storing numbers in the System-Wide Directory.3.19 Dialing System - Wide DirectoryDials frequently used numbers from any station.1. Go off hook and listen for dial tone.2. Press MEMORY key.

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 26 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.3. Using the touch-tone keypad, enter 2-digit directory storage location.Valid numbers for the System-Wide Directory are from 00 to 29.ONLY THE OPERATOR, Phone Station 0, can store numbers in the System-Wide Directory. Refer to theOperator’s Manual for details on storing numbers in the System-Wide Directory.3.20 Ring PagingCauses all non-busy phones on the system to ring.1. Select the COM line by pressing the COM Line Select Key.The dial tone will be heard on the speaker.2. Press FEATURE key.3. Press 1.A ring tone will be heard on the speaker.4. Pick up the handset.When another person answers the call, pick up the handset to respond.Ringing stops when any station answers the call. This feature can be used to see if you are the onlyperson in the building3.21 Page AllBroadcasts on the COM line to all Speaker Phones.1. Go off hook.You will hear a dial tone in the earpiece.2. Press the PAGE, then PAGE once again.The dial tone will stop when paging is ready. All Speaker Phones not in use will emit a tone.3. Speak into the handset.Your voice will be broadcast through the speaker of all Speaker Phones.If anyone picks up their handset, the speakers on all Speaker Phones are turned off and the person whopicked up is immediately connected to the broadcaster directly.3.22 Extension PagingAllows a phone to broadcast a message over another extension’s speaker.1. Go off hook, and press the COM key.2. Press the PAGE key.3. Press the ‘one touch’ key corresponding to the extension to which you would like to broadcast amessage.OneTouchKeyExt. Number

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 27 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.0800/9001801/9012802/9023803/9034804/9045805/9056806/9067807/9078808/9089809/90910 810/91011 811/91112 812/91213 813/9134. Speak into the handset.Your voice will be broadcast through the speaker of the extension you paged.3.23 Conference CallsConnects multiple parties together in a telephone conversation.1. While connected to an outside line, press HOLD key.2. Press the 'one touch' extension number of the station you wish to add to the conversation.You can also enter an extension number from the touch-tone keypad, if you desire.OR2. Press SHIFT key, followed by the ‘one touch’ extension number (0-13).One TouchKey Ext.Number0800SHIFT, 0 9001801SHIFT, 1 9012802SHIFT, 2 9023803SHIFT, 3 9034804SHIFT, 4 9045805SHIFT, 5 9056806SHIFT, 6 9067807SHIFT, 7 9078808SHIFT, 8 9089809SHIFT, 9 90910 810

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 28 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.SHIFT, 10 91011 811SHIFT, 11 91112 812SHIFT, 12 91213 813SHIFT, 13 913Only one outside line can be conferenced at a time. Multiple stations can be conferenced by repeatingsteps 1-3.3. After the extension answers, press the Line Select Key of the held line (Line 1, Line 2, or Line 3).Conference is now active.If the extension number is busy, then the system will turn off the busy signal when you reselect the heldline. If the extension does not answer, then when you select the held line the ringing will stop.3.24 Call ForwardingRedirects calls so that in addition to the user’s phone ringing, another station’s extension will also ring.Call Forwarding is selectable for 8XX and/or 9XX extensions.Enable Call Forwarding1. While on hook, press FORWARD key.2. Using the touch tone keypad, enter the 8XX extension number of the station you want your callsforwarded to, or enter the 9XX extension number of the station you want you 9XX calls forwarded to.The phone will beep once to notify you that Call Forwarding is enabled. for example, if you areextension 905 and you want your calls forwarded to station 13, enter 913.Disable Call Forwarding1. While on hook, press FORWARD key.2. Press 8 for 8XX extension forward disable, or 9 for 9XX extension forward disable.The phone will beep twice to notify you that Call Forwarding is disabled.If the phone is on hook and the extension number is invalid, then the phone will beep three times. If thephone is off hook and the extension number is invalid, then you will hear a busy signal in the earpiece.3.25 Callback/Camp - OnRings back when the busy internal (COM) extension number or extension becomes free.Enable Callback/Camp-On1. While receiving the busy signal in the earpiece, press CALLBACK key.The phone will beep once and the red COM light will blink quickly to notify you that Callback/Camp-Onis enabled.2. Hang up.The phone will ring back when the extension becomes free. When you go off hook the extension willring.Disable Callback/Camp-On1. Press the CALLBACK key.

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 29 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.The phone will beep twice and the red COM light will stop blinking to notify you that Callback/Camp-Onis disabled.Note: Only one extension can be camped-on at one time.3.26 COM Callback/Camp - OnRings back when the busy COM line becomes free.Enable COM Callback/Camp-On1. When the COM line is in use, press CALLBACK key while on hook.The phone will beep once and the red COM light will blink quickly to notify you that COMCallback/Camp-On is enabled.2. Hang up.The phone will ring back when the COM line becomes free. Then you can go off hook (you will hear adial tone) and dial the extension number.Disable COM Callback/Camp-On1. Press the CALLBACK button.The phone will beep twice and the red COM light will stop blinking to notify you that COMCallback/Camp-On is disabled.3.27 MutePrevents the conversation from going to the outside caller.Enable Mute1. During the conversation, press MUTE/DND key.The MUTE/DND key light will blink to notify you that MUTE is enabled.Disable Mute1. Press MUTE/DND key.The MUTE/DND key light will stop blinking to notify you that MUTE is disabled.3.28 Release Line PrivacyTemporarily allows any other station to join the conversation.1. Press the Line Select Key of the line that you are currently on.The phone will beep once in the earpiece to notify you that you have Released Line Privacy for thatparticular call.The system will default to the Line Privacy mode which keeps other people or devices from breaking intoyour conversation.3.29 Do Not Disturb (DND)Turns off all rings to a particular station. This will affect both primary and secondary extensions.Enable Do Not Disturb1. While on hook, press MUTE/DND key.The phone will beep once and the MUTE/DND key light will blink to notify you that DND is enabled.Disable Do Not Disturb1. While on hook, press MUTE/DND key.

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 30 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.The phone will beep twice and the MUTE/DND key light will stop blinking to notify you that DND isdisabled.3.30 Ring BlockingTurns off all rings to the Speaker Phone’s speaker, but still allows broadcasts or paging through thespeaker phone's. This will affect both primary and secondary extensions.Enable Ring Blocking1. While on hook, press FEATURE key.2. Press 6.The phone will beep once to notify you that Ring Blocking is enabled.Disable Ring Blocking1. While on hook, press FEATURE key.2. Press 6.The phone will beep twice to notify you that Ring Blocking is disabled.3.31 Voice Mail ModeDirects unanswered extension calls to the optional Voice Mail System (VMS) instead of ringing all phones.This will affect both primary and secondary extensions.Enable VMS Mode1. While on hook, press the MESSAGE key.The phone will beep once to notify you that VMS mode is enabled.Disable VMS Mode1. While on hook, press the MESSAGE key.The phone will beep twice to notify you that VMS mode is disabled.This feature will transfer all unanswered extension calls to the VMS.3.32 Voice Mail Message RetrievingTelephone extensions, both primary (8XX) and secondary (9XX), can access any voice mail messages onthe Voice Mail System (VMS).YOU MUST GO OFF HOOK TO RETRIEVE VOICE MAIL MESSAGES.Retrieving Messages From the VMS1. Go off hook and press the MESSAGE key.2. Press 8 for messages to the 8XX extension, and 9 for messages to the 9XX extension.The VMS will be accessed through the COM line automatically. If COM is busy, then you will receive abusy signal.NOTE: The MESSAGE light will blink continuously in a pattern to indicate which extensions (8XX, 9XX, orboth) have messages. The pattern is one blink for 8XX messages, two blinks for 9XX messages, andthree blinks for 8XX and 9XX messages.3.33 Set Up - Line Ring PreferenceSelects which telephone lines will ring at a particular station. Ring delay is useful when you want certainphones to ring before other phones. The Speaker Phones are shipped with Default “0”.

1VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 31 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.1. While on hook, press FEATURE key.2. Press 4.The red light over Line 1 key will blink.3. Using the touch-tone keypad, enter the number of rings to delay for Line 1.The number key corresponds to the number of rings to delay before ringing your phone on Line 1 (seetable). After this key is pressed, the red light over Line 2 key will blink.4. Using the touch-tone keypad, enter the number of rings to delay for Line 2.After this key is pressed, the red light over Line 3 key will blink.5. Using the touch-tone keypad, enter the number of rings to delay for Line 3.After this key is pressed, the set up is completed.NumberKey Ring Delay0Ring immediately22 ring delay44 ring delay66 ring delay9Never ringsRing delay does not affect outside calls when an extension number is dialed, transferred calls, and COMline calls.3.34 Set Up - Line Select OrderSets up order of available line selection. This feature is useful when you want certain phones to selectspecific lines. For example, in home installations where there is a residence (Line 1) and a business (Line2) telephone line, the business telephone station can be set up to select Line 2 first.1. While on hook, press FEATURE.2. Press 5.All the red line lights will blink.3. Press the Line Select Keys in the order that you want them selected.For example, to set the following order: Line 1, Line 3, COM, Line 2, press the Line 1, Line 3, COM,and Line 2 keys subsequently.By default the system will select in the following order: Line 1, Line 2, Line 3, COM.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 32 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.4. Cordless System Phone With CID4.1 Product OverviewThe VT3921 cordless phone is a 3 line system phone with an alpha-numeric LCD display in the handset.Both LCD and keypad backlighting is provided. However, for reasons of cost and ease of implementation,this backlighting is intended only to provide sufficient luminosity to illuminate the keypad and LCD in lowlight and no light conditions.The handset LCD will display numbers entered manually onto the keypad as well as all numbersprogrammed into and recalled from the quick dial memory. You can enter the phone number in the LCDdisplay, place the line off hook, and the number in the LCD display will be dialed out automatically. Thequick dial memory will have a capacity of 20 phone numbers with a maximum of 20 digits for eachnumber.The alpha-numeric display will show both the name and number of the calling party. Up to 15 namecharacters or 11 phone number digits can be displayed on the LCD, see section 25.1. The LCD displaywill show the callers name and will store both the caller’s name and number when an incoming call withmultiple message CID information is received.The user can easily answer a call on the handset by simply pressing any key other than the OFF, MUTEand volume control keys. This is very useful in a dark environment so that the person does not have tofumble around looking for the PHONE key to answer the call. This is only valid if the phone is in thestandby state. If the user presses the MUTE key, then the handset ringer will not ring for the duration ofthe call. This allows the user to easily disable the ringer if he/she does not want to answer a particularcall. Pressing either volume key will activate the backlighting without answering the call.An E2PROM is used in both base and handset to provide non-volatile storage of all speed dial numbers,Caller ID name and numbers as well as the base and handset security code.4.2 Specifications4.2.1 RF SpecificationsRF RADIATED FIELD STRENGTH <50 mV/meter @ 3mRF CHANNEL SPACING 300 kHzCHANNEL BANDWIDTH 150 kHz (20dB bandwidth)RECEIVE IF FREQUENCY 10.7MHzOPERATING TEMPERATURE RANGE 0 to +50°CHANDSET TRANSMISSION FREQUENCY 925.05 - 927.75 MHzBASE TRANSMISSION FREQUENCY 902.3 - 905.0 MHzTRANSMITTER FREQUENCY STABILITY ±5 kHz, 0 to +50°CRECEIVER NOISE FIGURE < 5.5dBSENSITIVITY FOR 30DB SINAD < -106 dBm at duplexerIMAGE REJECTION (RF) > 60 dBADJACENT CHANNEL REJECTION > 60 dBRECEIVER MUTING LEVEL Between -109 dBm and -107 dBm

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 33 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.4.2.2 Audio SpecificationsFREQUENCY RESPONSE 300Hz - 3kHz (+/- 1dB)SINAD @ 1KHZ >40dBMAXIMUM SNRAUDIO ENCODING 32kbps ADPCM4.2.3 Digital SpecificationsAGGREGATE DATA RATE 48kbps4.2.4 Caller ID specificationsThe caller ID display module meets protocol requirements specified in the following standards documents:• Bellcore TR-NWT-000030 Issue 2"Voiceband Data Transmission Interface Generic Requirements"• Bellcore TR-NWT-000031 Issue 4"CLASS Feature: Calling Number Delivery"• Bellcore TR-NWT-001188 Issue 1"CLASS Feature: Calling Name Delivery Generic Requirements"4.3 General FeaturesThe following is a general description of the features and functions:• Name / Number Caller ID display with 50 call storage capacity• 32kbps ADPCM voice coding• 2 row by 12 character 5x7 dot matrix alpha-numeric LCD display on Handset• 10 Channel Operation with auto channel selection• 900 MHz Operation• 24 Bit Digital Security Code for 16.8 million combinations• DTMF and Pulse Dialing• 20 Number/location Programmable Memory for 20 Digit Phone Number• Automatic Search for Best Available Channel• Low Battery Detect and Warning indicator• ➊Handset Power Saving (minimum 7 days Standby Mode, less during out-of-range)• ➊7.0 Hours minimum continuous talk time (8 hours target)• Volume Adjust on Handset• REDIAL, HOLD, PAGE and MUTE• Hearing-Aid Compatible Receiver• Provisions for spare handset battery pack in the charger/craddle unit• Backlit LCD on the handset with green illumination• Backlit handset keypad for operation in low light conditions with green• illumination.• Auto hang up when returning the handset to the cradle.➊ Note that this is only when masked ROM is used. Use of external ROM will diminish thetalk/standby time.➋Although the CID circuit is powered in POT’s mode, it is operating below its specified minimumguaranteed operating voltage and is therefore not guaranteed to operate properly in POTs mode.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 34 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.4.4 Unique Features• Use of E2PROM in base unit for permanent memory storage of security code• Use of E2PROM in the handset for nonvolatile storage of the security code, CID messages and speeddial numbers - also allows for on-the-fly battery replacement• Fully Digital Link between Handset and Base• Digitally-Scrambled Voice Communication between Handset and Base has extremely high immunity tonoise and interfering signals• Out-of-Range indication while the handset is in use and in standby mode• Removable battery pack• Compatibility with remote charger• Easy answer - When the phone rings simply press any key on the handset to answer.• A faster charge (.2C) capability will be provided on the base for the handset battery. The unit willautomatically switch over to regular trickle charge (.1C) when required.• Flash can be programmed into speed dial sequences• Line in use indicator• The electrical design will support charging in either the handset in the face up or face down position.Whether or not the unit does, depends on the mechanical design.• Ringer muting4.5 Features Not Provided• Automatic line drop is not provided• Name dialing is not provided• Multi handset capability is not provided.• Manual channel change has been deleted as the auto channel change algorithm takes care of thisfunction.• Automatic security code updating when the handset is cradled has been eliminated. The base andhandset security codes are now factory preset and stored in E2PROM for the life of the unit. Newsecurity codes are therefore not generated every time the unit is recradled.4.6 System User Features4.6.1 Line SelectionTo select an outside line, just press PHONE to go off hook and the first available outside line will beconnected in the line select order. To select the COM line or another outside line, press #FUNCTIONfollowed by COM, LINE 1, LINE 2, or LINE 3. If all of the outside lines are busy when you go off hook, theCOM line will be selected if it is available and the dial tone will be different. The default line select order isline 1, line 2, line 3, and then COM. To hang up, press OFF.4.6.2 Internal CallsTo make an internal call, press PHONE to go off hook, then press #FUNCTION followed by COM to getthe internal line, then enter the extension number (800-813,900-913) of the party you wish to reach. If theinternal line is busy, you will get a busy signal after pressing COM. If the party you are calling is busy on anoutside line, you will get a busy signal after entering the extension number.4.6.3 Transferring CallsSeveral methods can be used to transfer an outside call to another extension. When placing a call onprivate hold, press HOLD once and the “H” will display after the selected line symbol on bottom line ofdisplay. To place the call on global hold, press HOLD again and the inverted “H” will be displayed. Onprivate hold, only you or a party that you transfer a call to can reconnect to the outside party. On global

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 35 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.hold, any extension can pick up the call. Two of the most commonly used methods of transferring calls areshown below.4.6.3.1 Method 1If you know the other parties extension and you want to transfer the call to his/her phone, press HOLDonce to place the call on private hold, then the extension number (800-813,900-913). If you stay on theline, you will be connected to the new extension and the outside party is still on hold. When you go onhook by pressing OFF, the new extension is then connected to the outside party being transferred. If youhang up before the new extension answers, the person answering will immediately be connected to theoutside party. So if you stay on the line and you wish to reconnect to the outside party after the newextension does not answer, then press PHONE to be reconnected.4.6.3.2 Method 2If you do not know the other party’s extension that you wish to transfer to, or you believe they are awayfrom their phone, you can place the call on global hold by pressing HOLD twice. You can then inform theother person that they have a call on global hold and they can retrieve the call from any phone. One way toinform the person is to broadcast a message if there are speaker phones on the system. To broadcast,press OFF to hang up, press PHONE to get another line, then press *FUNCTION followed by B. PAGEand speak into the mouthpiece.4.6.4 Global Hold Pick-UpTo connect to a call on global hold determine which call is on hold by observing the display, press PHONEto go off - hook, then #FUNCTION followed by the line number on hold (LINE 1, LINE 2, or LINE 3).Another method is to use the pick up global hold feature. To use the pick up global hold feature, pressPHONE to go off hook, then *FUNCTION followed by HLD P/U to pick up the held call. If there is morethan one call on global hold and you get the wrong one, place that caller back on global hold, go on - hook(OFF), off - hook (PHONE),then *FUNCTION, followed by HLD P/U again to pick-up the next line onglobal hold.4.6.5 ConnectTo connect to another extension that is ringing, go off hook by pressing PHONE, then *FUNCTIONfollowed by CONN.4.6.6 BroadcastTo broadcast a message over all speaker phones, go off hook by pressing PHONE, then *FUNCTIONfollowed B. PAGE and speak into the mouthpiece.4.6.7 Call ForwardingTo forward your calls to another extension, go off hook by pressing PHONE, then *FUNCTION followed byFWD and the extension number you wish to forward your calls to (800-813,900-913). There will be onebeep in the earpiece to indicate that call forwarding is active. To remove the call forwarding, press PHONEto go off hook, then press *FUNCTION, then *FUNCTION again, then FWD and there will be two beeps inthe earpiece to indicate the forwarding is released.4.6.8 CallbackThis feature can be used to get a callback for a busy extension or a callback when the COM line isavailable.4.6.8.1 Extension CallbackWhen you are calling an extension on the COM line and you get a busy signal, you can use theCALLBACK feature to connect you to that extension when it is free. At the busy signal, press *FUNCTIONfollowed by CALLBK and OFF to hang up. When the extension is free, your phone will ring, and after youanswer, the other extension will ring. When CALLBACK is enabled, there will be one beep in the earpieceand the COM light on the Adapter Box will blink quickly. The CALLBACK will be cancelled when the call iscompleted or by pressing PHONE to go off hook, followed by *FUNCTION then CALLBK (there will be two

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 36 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.beeps in the earpiece and the COM light on the Adapter Box will stop blinking ) and OFF to hang up. TheCALLBACK is also cancelled when the COM line is selected.4.6.8.2 Com CallbackWhen the COM line is busy and you want to use it as soon as available, you can use the CALLBACKfeature. Press PHONE to go off hook, then *FUNCTION followed by CALLBK and OFF to hang up. Therewill be one beep in the earpiece and the COM light on the Adapter Box will blink quickly when CALLBACKis enabled. When the COM line is available, the phone will ring and there will be a COM dial tone whenyou answer, ready for you to dial your extension. The CALLBACK will be cancelled when the phone ringsback or by pressing PHONE to go off hook, followed by *FUNCTION then CALLBK (there will be twobeeps in the earpiece and the COM light on the Adapter Box will stop blinking) and OFF to hang up.4.6.9 Do Not Disturb (DND)If you wish to turn the ringer off so you will not be disturbed, use the DND feature. To use this feature, gooff hook by pressing PHONE, then press *FUNCTION followed by DND. There will be one beep in theearpiece to indicate the feature is active. To disable the feature, go off hook by pressing PHONE, then*FUNCTION followed by another *FUNCTION then DND. There will be two beeps in the earpiece to verifythe function has been released. When your phone is in the DND mode and you get an outside call, allother phones in the system will ring immediately.4.6.10 RedialTo redial the last number dialed, press PHONE to go off hook, then REDIAL.4.6.11 Memory FeaturesThere are 3 levels of automatic dialing memories available; ten 2 touch , thirty 4 touch, and forty system-wide memories. The 2 touch and 4 touch memory operations are described below. The system-widememory operations are described in the Adapter Box manual.4.6.11.1 Two Touch Memory DialingTo dial a stored memory, press PHONE to go off hook, then MEM followed by the memory location key(0-9).4.6.11.2 Two Touch Memory ProgrammingWith the handset off, press PROG, then the number of the memory location (0-9), followed by the numbersequence to store and terminated by pressing MEM. A 2 second pause can be added by holding down thenumber key before the pause until it beeps twice. For longer pauses continue to hold the key down and anadditional 2 seconds is added for each beep. The REDIAL can be used to insert the number sequence.4.6.11.3 Four Touch Memory DialingTo dial a stored memory, press PHONE to go off hook, then #FUNCTION followed by DIAL and the 2 digitmemory location (00-29).4.6.11.4 Four Touch Memory ProgrammingPress PHONE to go off hook, then #FUNCTION followed by STORE and the 2 digit memory location (00-29) then the number to be stored (up to 16 numbers and pauses), then OFF. A 4 second pause can beadded by pressing PHONE while entering the number sequence. The REDIAL can be used to enter thenumber sequence.4.6.12 Voice Mail FeaturesThe Voice Mail (VMS) features are best used with the Teligent 2-port VMS system and the operation isdescribed below. The features can also be used with other answering devices but is not described in thisdocument.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 37 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.4.6.12.1 VMS EnableTo enable the VMS feature, press PHONE to go off hook, then #FUNCTION followed by VMS EN. If thereis one beep in the earpiece, the VMS is enabled, if two beeps, the VMS has been disabled. The systemdefault is disabled.4.6.12.2 Retrieving VMS MessagesPress PHONE to go off hook, then #FUNCTION followed by COM to go to COM line, then #FUNCTIONfollowed by VMS 8XX or VMS 9XX. Then just follow the instructions from the VMS system.4.6.12.3 Transferring A Call To A Voice Mail BoxIf you are connected to an outside party and they wish to leave a message on another persons voicemailbox, use the following procedure. Press PHONE once to go on private hold, then press #FUNCTIONfollowed by VMS XFR and the party’s extension (800-813,900-913) and OFF to hang up.4.6.13 Call WaitingIf you hear 2 beeps (8XX) or 3 beeps (9XX) in the earpiece while you are talking on the phone, it meansanother call has come in from outside for your phone. If you ignore it, the call will be transferred to voicemail if voice mail is enabled or will go to all ring if the voice mail is not enabled. If you wish to put thepresent call on hold and answer the incoming call, do the following. Press HOLD to put the present call onhold, then OFF to hang up. The phone will ring, then press PHONE to go off hook and you will be on linewith the new call. After finishing with the new call, press OFF to hang up, then PHONE to reconnect to theoriginal call you put on hold. If you are talking on the COM line when you hear the call waiting beeps, youmust hang up on the present call if you want to take the new call because there is no hold for the COMline. In this case, just press OFF and the phone will ring.4.6.14 Ring PageTo internally ring all non-busy phones, go off hook by pressing PHONE, then #FUNCTION followed byCOM. When the dial tone is heard, press *FUNCTION followed by R. PAGE.4.7 Functional Layout For Handset5JKL6MNO4GHI8TUV2ABC3DEF1...*TONE#0OPERMEMHOLDPHONE OFFCLEAR /DELTIME7 PQRSVIEW9 WXYZPROGCID REDIALMUTENote:This is not a m odel specif icrepresentation of the handset.Key layout and silk-screeningmay vary between models,4.8 Handset Function Key Description4.8.1 Phone Key

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 38 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.Press this key to select a LINE. If the handset has already accessed a line, pressing the PHONE key willflash the outside line. When a line is accessed without anything entered on the LCD, the LCD will display“PHONE ON” to show that the handset is active and off hook. As soon as a key is pressed, the messageis replaced with a cursor on the top left of the LCD. See section 21.2.4.Pressing the PHONE key will cause the unit to immediately access a line from any state or mode thephone is in except hold. Only pressing the HOLD key will cancel a hold condition and return the phone toan active line status.If the unit is placed in MEM or CID mode when a line is active, subsequently pressing the PHONE key willcause the unit to exit the mode and dials the contents of the memory location under examination. A lineflash is not generated. If the MEM or CID key is pressed a second time, then the units also exits thecorresponding mode and dials the appropriate digits. See sections 20.8.5 and 20.8.7 for moreinformation.In a microphone mute condition, pressing PHONE will flash the line without canceling mute. This may ormay not result in a dropped call depending on the local CO.4.8.2 Hold KeyThis key has two functions. Pressing this key when the handset is off hook it will place the call on PrivateHold. Pressing HOLD a second time will place the call on Global Hold. Pressing OFF or PHONE will notcancel hold or end the call.When the handset is not in PROGRAM, MEMORY or Caller ID mode and no line is active, pressing thiskey will display a pause digit on the LCD. This digit is used to add a 2 seconds pause into the dialingsequence when a phone number is dialed out.When a 2 second pause is entered into a predial or memory dialing sequence, the character “P” isdisplayed on the LCD. Note that when a line is active and on HOLD, a pause cannot be entered on thedisplay since the HOLD key by definition must function to cancel the hold condition while in this mode.Any digits which are entered onto the LCD during a hold condition and left on the display when the holdcondition is canceled, will be dialed out onto the active line. Digits entered onto the display that areproperly dealt with (i.e. digits entered on the LCD for the purpose memory programming will beautomatically cleared off the display upon successful completion of the programming sequence) are notdialed since the LCD was cleared prior to the hold condition being canceled.4.8.3 Off KeyPress this key to exit all modes except HOLD. The OFF key will cause the unit to exit only the mode thatthe phone is in at the time. For example, if a line was accessed followed by live dialing and then the CIDkey was pressed, pressing the OFF key will cause the unit to exit CID mode without disconnecting the line.Pressing the OFF key a second time will then disconnect the line.Note that if the OFF key is used to exit MEM or CID modes, the contents of the speed dial memory or CIDmemory under examination is not dialed (or appended onto the display in the case of predialing).However, if these modes are exited by pressing the corresponding key a second time, the memorycontents under examination is dialed (or appended on the display for predialing). In this way the OFF keyacts to exit MEM or CID modes without any subsequent action.Pressing the OFF key during programming will cause the unit to exit program mode, generate a sad toneand display “PROGRAMMING INCOMPLETE”. Pressing OFF during predial will clear the display. PressingOFF during incoming ringing has no effect.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 39 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.4.8.4 Prog KeyBeginning from handset idle mode, press this key to enter PROGRAM mode.4.8.5 Caller ID KeyPressing this key will put the unit into Caller ID mode. While in Caller ID mode, Caller ID memory contentscan be reviewed and messages (individually or all together) can be deleted.Pressing the CID key a second time will cause the unit to exit CID mode and append onto the display thecontents of the memory location under examination (last 7 digits only). In the case of live dialing, the digitswill be immediately dialed out.While in Caller ID mode, pressing PHONE will cause the unit to exit Caller ID mode and dial the last 7digits of the memory location under examination. If any digits have been predialed, subsequently enteringCaller ID mode and then exiting by pressing the PHONE key will result in both the predialed digits and thelast 7 digits of the memory location under examination being dialed. Pressing the OFF key in this case willcause the unit to exit Caller ID mode without appending the contents of the Caller ID memory on thedisplay, but will leave the predialed digits on the LCD. Pressing the OFF key a second time will completelyclear the LCD or the LCD will automatically be cleared after 30 seconds of inactivity.4.8.6 Mute KeyPress this key to mute the handset microphone during a conversation. The receive path is still active,however, nothing will be heard by the other party. In this condition, the LCD will show “MICROPHONEMUTED”. Press MUTE a second time to cancel the mute condition. Pressing PHONE during a mutecondition will flash the line and leave the microphone muted. Pressing OFF during a mute condition willcancel mute and disconnect the call.Pressing MUTE during incoming ringing will disable the ringer for the duration of the call. In thiscondition, the backlighting will still function as normal and the display will show “RINGER MUTED”, but noringing will be heard. The “RINGER MUTED” message will not supersede any CID messages. Thismeans that if CID information is being displayed, the “RINGER MUTED” message will not be seen untilafter the 10 second time-out for the CID message has expired.In predial mode (including line on hold condition), pressing the MUTE key will add a hook-switch flash intothe speed-dial sequence. During predialing this will be represented on the display by the alpha character“F”.In pulse dialing mode, programming a flash into a redial sequence following a temporary tone commandwill not cancel the temporary tone function. When the temporary tone function has been activated, it willremain active until the OFF key is pressed. Flashing the line by pressing the PHONE key will not cancelthe temporary tone function.The MUTE key is inactive when the phone is on hold.4.8.7 Mem KeyPress this key to enter MEMORY dialing mode. Pressing the MEM key a second time will cause the unit toexit MEM mode and append onto the display the contents of the memory location under examination. Inthe case of live dialing, the digits will be immediately dialed out.While in Mem mode, pressing PHONE will cause the unit to exit Mem mode and dial the contents of thememory location under examination. If any digits have been predialed, subsequently entering Mem modeand then exiting by pressing the PHONE key will result in both the predialed digits and the contents of thememory location under examination being dialed. Pressing the OFF key in this case will cause the unit toexit Mem mode without appending the contents of the Mem memory on the display, but will leave the

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 40 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.predialed digits on the LCD. Pressing the OFF key a second time will completely clear the LCD or theLCD will automatically be cleared after 30 seconds of inactivity.4.8.8 Clear/Del KeyThis key has two functions. In idle mode, press this key for less than 1 second to clear off the last digitentered on the display. Press and hold this key down for more than 1 second to completely clear off thedigit section of the LCD display. This key function can be used to clear off the LCD when the handset isidle or can also be used to erase speed dial memory locations, see section 24.1.2. In Caller ID mode,press this key for less than 1 second to delete the call currently being reviewed. Press and hold this keydown for more than 1 second to completely delete the contents of all Caller ID memory. See section 25.2.4.8.9 Redial KeyPress this key to display the last number dialed. If a line is already active, pressing REDIAL will dial out thenumber in the redial buffer. The redial buffer size is 20 digits.The redial buffer is filled up with digits dialed from any source including manual dialing, Mem dialing,Caller ID mem dialing or redial between the time the PHONE key is pressed and the OFF key is pressed.The redial buffer will only retain the digits that are actually dialed out onto the line; i.e. If a Mem dialingsequence is recalled and the dialing string is interrupted with the OFF key, only those digits actually dialedout onto the line will be retained in the redial buffer. Flashes are not stored in the redial buffer. Flashesare not considered a dialed digit. Only the first 20 digits entered are stored.Redial sequences can preface or be appended to digits subsequently dialed by any means (i.e. manually,CID or Mem dialing). This is valid for both live dialing (line access prior to dialing), or predialing. Duringpredialing, speed dial memory locations are recalled by pressing MEM, followed by the 2-digit locationnumber and then MEM again to exit Mem mode and show the numeric contents only.For example if digits 2223333 are manually dialed followed by MEM01 & MEM which then dials 9 P 9,followed by an entry and exit from CID mode which dials out 4445555, the contents of the redial buffer isnow as follows:2 2 2 3 3 3 3 9 P 9 4 4 4 5 5 5 5If 6667777 is now predialed followed by the redial key, the following 20 digits will be displayed:6 6 6 7 7 7 7 2 2 2 3 3 3 3 9 P 9 4 4 4Only 20 digits can be predialed. Additional digits are not stored. The same would be true if the PHONEkey was pressed first. Redial digits are stored in non-volatile memory (EEPROM).4.8.10 Volume  KeyPress and hold this key increments the handset receiver volume at a rate of one level per half second.There are total of 4 volume level settings and the volume keys are active at all times. Pressing the volumeup key during ringing will cause the backlighting to activate, but will not answer the call. Releasing thevolume key within 1/2 second will not affect the volume setting. The volume will change only if the key isheld down for more than 1 second.Pressing a volume key will not generate a key beep. Pressing any other key while the volume level isbeing displayed will remove the volume level display and take action for that key.4.8.11 Volume  KeyPress and hold these key decrements the handset receiver volume at a rate of one level per half second.There are total of 4 volume level settings and the volume keys are active at all times. Pressing the volumedown key during ringing will cause the backlighting to activate, but will not answer the call. Releasing the

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 41 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.volume key within 1/2 second will not affect the volume setting. The volume will change only if the key isheld down for more than 1 second.Pressing a volume key will not generate a key beep. Pressing any other key while the volume level isbeing displayed will remove the volume level display and take action for that key.4.9 Special Handset Function Keys4.9.1 Tone / / * KeyThis key is used to scroll to the next lowest speed-dial memory location or Caller ID memory locationdepending on which mode the phone is in. Pressing and holding the key will cause the display to auto-scroll at a rate of twice per second.In PULSE dialing mode, this key is used to switch to DTMF TONE dialing mode. In memory dialing mode,use this key to scroll to the next lowest speed-dial memory location.When the temporary tone function has been activated, it will remain active until the OFF or HOLD key ispressed. Flashing the line by pressing the PHONE key will not cancel the temporary tone function.Pressing OFF and subsequently pressing the PHONE key will return the unit to pulse dialing operation.4.9.2 # / KeyThis key is used to scroll to the next highest speed-dial memory location or Caller ID memory locationdepending on which mode the phone is in. Pressing and holding the key will cause the display to auto-scroll at a rate of twice per second.4.9.3 7 /  (Time) KeyWhile in CID mode, pressing this key will display the time/date stamp information for that call for theduration that the key is held down. See section 17 for details.4.9.4 9 /  (View) KeyThe view key can be used in Caller ID mode to show the entire name field when the number of namecharacters exceeds 12. See section 25.1.The view key can also be used in MEM mode to show the entire programmed phone number (up to 20digits maximum) when the number of digits exceeds 11. See section 25.15. LCD DisplayThe LCD will be a 2 row by 12 character alpha-numeric type display. The display will show the name onthe top row and the number on the bottom row. The basic LCD will look like:For the sake of simplicity, these characters will be represented as follows in thisdocument:

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 42 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.ABCDEFGHIJKL1234567890 ïïïïNote: All LCD message are left justified to provide a consistency in message presentation for the user.5.1 LCD Display CharactersAnything displayed on the LCD will be cleared off after 30 seconds of inactivity with the exception of theoperation defined in section 25.1Alpha characters shown on the display will be upper or lower case. The following symbols correspondingto a portion of those available in the standard ASCII character set can also be displayed. The charactersand symbols that can be displayed are as follows:AlphaCharacters AlphaCharacters(cont’d)AlphaCharacters(cont’d)AlphaCharacters(cont’d)Numericcharacters Symbols Symbols(cont’d)ANAn1 ‘BOBo 2ç“CPCp3 ( -DQDq 4 ) .ERE r 5 * ,FSFs6& ;GTG t 7 / :HUHu 8%=IVIv9$<JWJ w0 # >KXKx @+LYLy !MZMz ?5.2 General (Non Mode Specific) LCD Messages5.2.1 Low Battery WarningWhen the handset battery voltage drops below between 3.3[TBD] and 3.5[TBD] volts, the unit will show“LOW BATTERY” on the top line of the display.LOW BATTERYA warning tone is emitted from the handset when the phone is first activated during a low batterycondition. If the handset is being used for CID memory reviewing, Mem programming or Mem dialing, the

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 43 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.low battery warning tone and message is suppressed until the LCD is clear of other messages. 5 secondsafter the LCD is cleared, the warning tone will be generated and the low battery warning is displayed onthe LCD.5.2.2 Mute ModesWhen the handset microphone is muted, the display will show “MICROPHONE MUTED” until the mutecondition is canceled by pressing the MUTE key again.MIC MUTEDPressing keys on the numeric keypad while the “MICROPHONE MUTED” message is being displayed willremove the message from the display and take action for that key. The “MICROPHONE MUTED”message is returned to the display after 5 seconds of keypad inactivity.Pressing MUTE during incoming ringing will disable the ringer for the duration of the call. In thiscondition, the backlighting will still function as normal and the display will show “RINGER MUTED”, but noringing will be heard. The “RINGER MUTED” message will not supersede any CID messages. Thismeans that if CID information is being displayed, the “RINGER MUTED” message will not be seen untilafter the 10 second time-out for the CID message has expired.RINGER MUTEDAlso, the ringer mute function is only active when the handset is in idle mode and the dial buffer is empty.If the unit is in CID, MEM or PRG mode or there are predialed digits on the LCD, pressing the MUTE keywill not mute the ringer. See section 25.1 for more information on the mute conditions.5.2.3 Volume SettingWhile the phone is in use or in standby mode, there is no indication of the current volume setting. Wheneither the volume up or volume down is pressed, the top line of the display will immediately show“VOLUME ” where each illuminated segment of the bar graph represents 1 volume setting with 1being the quietest and 4 being the loudest.Pressing and releasing the volume key within 1/2 second will not cause the volume to change. If thevolume key is held down for more than 1 second, the volume will begin to automatically increment ordecrement (depending on the key) the volume at a rate of twice per second. The volume indication willremain on the display for 5 seconds after the key is released.VOLUME

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 44 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.After pressing and releasing the volume key, providing the volume display is still active on the LCD, anysubsequent press (and release within 1/2 second) of the volume up or volume down key will cause thevolume to increment or decrement accordingly by one step.Each subsequent key press will restart the 5 second display timer and will cause another single stepchange in the volume.5.2.4 Phone Off-Hook IndicatorIf the phone has gone off-hook without any digits on the LCD, the message “PHONE ON” will bedisplayed:PHONE ON6. Special Features6.1 BatteryThe handset battery is in the form of an easily changeable pack. The user should be able to easilychange one battery pack for another. Once the user has removed and replaced the handset batterypack, the handset will reload its security code from its E2PROM and will then enter idle mode or resume acall in progress.6.2 In The Dark (Easy-Answer)There are two components to in the dark answering. The first is easy-answer and the second is automatickeypad and LCD illumination.6.2.1 Easy-AnswerIf a call comes in when the handset is out of the cradle and in standby mode, provided no digits have beenmanually entered on the LCD, then pressing any key except MUTE, VOLUME (up or dwn) or OFF willanswer the call.Pressing MUTE will disable the ringer for the duration of that call only; ringer is re-enabled for the next call.In the dark answering is active only in standby mode. Pressing either of the volumes keys will activate thebacklighting without answering the call. So long as the volume key is not held down for more than 1/2second, the volume setting itself is unaffected. The OFF key is ignored.This feature is not active in PRG mode, when a call is on hold, during dialing (i.e. redial sequence) or ifthere are digits entered on the LCD.6.2.2 Automatic Keypad And LCD IlluminationThe keypad and backlit LCD will always illuminate together. Illumination will occur if any key is pressed onthe handset whether the handset is in use or in standby mode. After a key is pressed, the illumination willremain on for 5 seconds and will then automatically turn off. Pressing any key during or after the 5 secondinterval will restart the 5 second timer.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 45 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.Illumination will also occur during handset ringing both for incoming ringing and for paging. In the case ofhandset ringing, illumination will commence at the beginning of the first ring signal and will remain oncontinuously until 5 seconds after the handset receives the CID information from the base. After the initialinterval, the backlighting will follow the cadence of the ringing signal (i.e. ring on = illumination; ring off =no illumination). After termination of ringing, if the call was not answered, the illumination will be off andwill remain off until a key is pressed or another call is received. If the call was answered, the illuminationwill remain on for 5 seconds (5 second timer restarted as a result of pressing the PHONE key) and thenturn off automatically provided no other keys are pressed.6.3 Channel Searching (Out–Of–Range)With the handset active, when the RF link broken between the handset and base, the handset alerter willemit a beep signaling a “CHANNEL SEARCHING..” condition as the handset begins scanning for thebase.CHANNELSEARCHING...The “CHANNEL SEARCHING..” indication will remain on the LCD as the handset tries to reestablishcommunication with the base. If this is not done with 30 seconds, the unit will display “CALL DROPPED”for 3 seconds and will then enter standby mode. At intervals of 10 seconds, the handset will wake up,beep and display “CHANNEL SEARCHING..” again as it scans all 10 channels (channels 0 through 9)before blanking the display and reentering standby mode.Note: Once entering standby mode while in an out-of-range condition, the handset will emit out-of-rangetones at 10 second intervals until the battery dies or the handset is able to reestablish communication withthe base. In this condition, the battery life will be greatly diminished.If the PHONE key is pressed while the unit is in an out-of-range condition and in standby mode, a keybeep will be generated and after two seconds the out-of-range warning beep is generated and the“CHANNEL SEARCHING..” message then appears on the display for 30 seconds. After 30 seconds theunit will display “CALL DROPPED” for 3 seconds and enter standby mode.If the unit is within range of the base, the handset will automatically reestablish the link within 15 seconds.The unit will then display:FOUNDCHANNEL Xfor 3 seconds and then blank the display and enter into standby mode.6.4 Fast Charge For Handset BatteryThere is circuitry in the base which will enable a .2C charge rate through MCU control when the batteryvoltage is below a certain voltage threshold. The .2C charge rate is reduced back to .1C when the batteryvoltage reaches a predetermined voltage threshold or a time-out period of 8 hours has expired.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 46 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.The purpose of the variable charge rate is to provide a better handset charging time without forcing thebattery to absorb a higher continuous trickle charge current. This will enable us to provide a full batterycharge in 8 hours while also providing for optimum battery longevity.6.5 Auto Hang-UpWhen a call has been completed, the line can be disconnected in one of two ways. Either the OFF keycan be pressed or the handset can simply be returned the base cradle. Upon returning the handset to thecradle, the call will be automatically disconnected. The call is also disconnected when the handset iscradled with a call on hold.6.6 Line (Extension) In Use IndicationWhen another extension is off hook on the same phone line, when the unit is in standby mode only, it willdetect this condition and inform the user.7. DialingThere are two basic ways that a number can be dialed out7.1 Accessing The Line Prior To DialingIn this mode, the PHONE key is pressed with nothing displayed on the LCD. After the PHONE key ispressed, the LCD will display a cursor on the top line one position to the right of the left most side of theLCD to signify that a line has been accessed. Numbers can now be dialed out from any of the followingmethods:7.1.1 Digit KeysEnter digits 0-9, * or # from the keypad. The corresponding DTMF tone (for tone dialing) or pulsesequence (for pulse dialing) will be dialed out immediately following the key press. For both tone andpulse dialing, digits will be buffered up to a maximum of 20 digits so that you can enter digits faster thanthe phone is dialing. For each digits entered there shall be an accompanying key beep. Digits aresequentially dialed out. Refer to section 20.9.1 for explanation of the temporary tone function of the */tonekey.In the case of tone dialing the feedback DTMF in the ear piece shall be attenuated by {TBD}.Note: Tone Dialing differs from pulse dialing in that if the buffered dialing has caught up to the currentdigit key being held down, the DTMF generation will be on for the duration of the digit key being pressed.The DTMF tone shall also terminate upon the release of the key. This behavior applies only when thereare no buffered digits to be dialed (buffer empty) and that the current dialed digit is the one that is beingheld down by a key press. In the case of Pulse dialing no special action or logic is applied by the system ifa key is held down.For all dialing situations, the # key is ignored in pulse dialing mode unless it is preceded by the * key toindicate the temporary tone function. A cursor will follow each digit entered to indicate where the next digitwill appear.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 47 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.5036438981If more than 10 digits are entered, the 11th digit will appear at the beginning of the second line and digitsare entered up to a maximum of 20. When the 21st digit is entered, all digits shift left one position. Onlythe last 20 digits are displayed.7.1.2 Memory Location DialingPress MEM to enter memory dialing mode.When the phone is placed into memory dialing mode, the display will show “SPEED DIAL LOCATION”followed by two underscores and a cursor to prompt the user to enter a 2-digit memory location numberbetween 01 and 20. The cursor will shift right one space as the first digit is entered (which must be a 0,1or 2 otherwise a sad tone is generated), to prompt the user to enter the second digit.SPEED DIALLOCATIONFor memory location entry:first digit: 0, 1 or 2 OK, all other digits will cause sad tonesecond digit: 0-9 OK, provided the number is within the range of 01 to 20.Invalid keys will cause a sad tone.If the location entered has not been previously programmed, the handset will exit MEM mode. The line isstill accessed. If the unit is in MEM mode and no key is pressed for 30 seconds, the unit will automaticallyexit MEM mode. The line is still accessed.7.1.3 Caller ID Memory DialingPress CID to enter Caller ID mode.When the phone is placed into Caller ID, the display will show the name corresponding to the most recentcall received. See section 25.1. The scroll keys can be used to view other Caller ID memory locations.The VIEW (9) key can be used to view the phone number. When the right memory location is on thedisplay, pressing PHONE or CID will cause the unit to exit Caller ID mode and dial the last 7 digits of theCaller ID memory location under examination. To exit without dialing, press OFF.If the unit is in Caller ID mode and no key is pressed for 30 seconds, the unit will automatically exit CallerID mode. The line is still accessed.7.1.4 RedialPress the REDIAL key to immediately display and dial out whatever the last digit sequence most recentlydialed. The redial buffer size is 20 digits, so only the first 20 digits entered into the redial buffer will beredialed.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 48 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.7.2 Number Entry Before Line AccessIn this mode, the number is entered on the LCD display before a PHONE key is pressed. This is alsocalled predialing. When the PHONE key is pressed, there is a 2 second delay before the digits displayedon the LCD are dialed. The delay is to allow time for the CO to return a dial tone before dialingcommences.Any digits left on the display will be automatically cleared off after 30 seconds of inactivity.Numbers can be dialed out from any of the following methods:7.2.1 Digit keysEnter digits 0-9, * or # from the keypad. Each digit (up to a maximum of 20) will be displayed on the LCD.Pressing HOLD will display a "P" on the LCD and will provide a 2 second pause at the point in thesequence in which it was entered.When the PHONE key is pressed, the corresponding DTMF tone (for tone dialing) or pulse sequence (forpulse dialing) will be dialed out immediately following a 2 second pause (to ensure dial tone acquisition).The LCD display indication is the same as described in section 23.1.1. In the case where more than 10digits are entered, the top line will “wrap around” starting with the 11th digit and continue until the secondline is full (up to a maximum of 20 digits). In the case of predialing, the display is treated as 2 x 10 displaywith a maximum of 20 digits so that the length of a predial sequence cannot exceed the size of the redialbuffer (as the same buffer is used for both functions).7.2.2 Memory Location DialingPress MEM to enter memory dialing mode.Enter a 2-digit memory location (01-20) to specify the number to be dialed. The memory location and thecorresponding phone number are displayed on the LCD. The scroll keys can also be used to scroll up ordown through the speed dial memory locations.For memory location entry:first digit: 0, 1 or 2 OK, all other digits will cause sad tone.second digit: 0-9 OK, provided the number is within the range of 01 to 20.* and # keys function as scroll keys. Invalid keys will cause a sad tone.When the phone is placed into memory dialing mode, the display will show “SPEED DIAL LOCATION”followed by two underscores and a cursor to prompt the user to enter a 2-digit memory location numberbetween 01 and 20. The cursor will shift right one space as the first digit is entered (which must be a 0,1or 2 otherwise a sad tone is generated), to prompt the user to enter the second digit.SPEED DIALLOCATIONThe display will then show:

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 49 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.LOCATION 135036438981If more than 10 digits are stored, the first 10 digits will be displayed followed by an arrow to indicate thatthere are more digits not currently on the display.LOCATION 141P50364389➔➔➔➔In this case pressing the View key can be used to scroll forward and view the entire number. The first partof the number is shifted to the top row of the display, and the remaining digits are displayed on the bottomrow.Press the PHONE key, the display will now show only the phone number and the phone number will bedialed out after a 2 second delay.If any digits have been predialed, subsequently entering MEM mode and then exiting by pressing thePHONE key will result in both the predialed digits and the contents of the speed dial memory locationunder examination being dialed. Pressing the OFF key in this case will cause the unit to exit MEM modewithout appending the contents of the speed dial memory on the display, but will leave the predialed digitson the LCD. Pressing the OFF key a second time will completely clear the LCD or the LCD willautomatically be cleared after 30 seconds of inactivity.If the unit is in MEM mode and no key is pressed for 30 seconds, the unit will automatically exit MEMmode and return the handset to idle mode.7.2.3 Caller ID Memory DialingPress CID to enter Caller ID mode.When the phone is placed into Caller ID mode, the display will show the name corresponding to the mostrecent call received. See section 25.1. The scroll keys can be used to view other Caller ID memorylocations. The VIEW (9) key can be used to view the phone number. When the right memory location ison the display, pressing PHONE will cause the unit to exit Caller ID mode and dial the last 7 digits of theCaller ID memory location under examination after a 2 second delay. To exit without dialing, press OFF.If any digits have been predialed, subsequently entering Caller ID mode and then exiting by pressing thePHONE key will result in both the predialed digits and the last 7 digits of the memory location underexamination being dialed. Pressing the OFF key in this case will cause the unit to exit Caller ID modewithout appending the contents of the Caller ID memory on the display, but will leave the predialed digitson the LCD. Pressing the OFF key a second time will completely clear the LCD or the LCD willautomatically be cleared after 30 seconds of inactivity.If the unit is in Caller ID mode and no key is pressed for 30 seconds, the unit will automatically exit CallerID mode. The line is still accessed.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 50 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.7.2.4 RedialPress the REDIAL key to immediately display whatever the last digit sequence that was most recentlydialed. Up to the first 20 digits dialed are stored into the redial buffer. Press the PHONE key and thenumber will be immediately dialed out following a 2 second pause for dial tone acquisition.8. Programming8.1 Programming Speed Dial NumberThis section describes how a phone number can be programmed into a speed dial memory location.There are a total of 20 speed dial memory available. Each speed dial memory is referred as a memorylocation starting from 01-20. Each location can hold a 20-digit phone number. Each phone numberprogrammed can be referenced / recalled by its memory location.To program a phone number:1. The handset must be in idle mode.2. Enter the number so that it is displayed on the LCD by manually entering, using REDIAL, or MEM.(Example: 5551234) If there are more than 10 digits, the 11th through 20th digit will be displayed onthe second line of the display.To insert a pause in a phone number, press HOLD at the appropriate point when entering the phonenumber. This inserts a 2 seconds pause. For longer pauses, press HOLD two or more times. Eachpress makes the pause 2 seconds longer. A "P" will be displayed for each time a pause is inserted.3. Press PROG. The display will change to “PROGRAM LOCATION”.PROGRAMLOCATION4. Enter the memory location (01..20) i.e. 18. The unit will emit a HAPPY tone and clear the LCD display.8.1.1 Unsuccessful ProgrammingIf an invalid numeric digit key is pressed for the memory location entry, a sad tone is generated, thedisplay is unchanged and the unit remains in program mode awaiting a valid digit entry.Pressing OFF or PROG will cause the unit to generate a sad tone and exit program mode. The followingmessage is displayed for 3 seconds and then replaced with the digits originally entered on the display priorto entering program mode:PROGRAMMINGINCOMPLETE

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 51 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.If the PHONE key is pressed while in program mode, the unit will generate a sad tone, exit program mode,display “PROGRAMMING INCOMPLETE” and then access a line. The message will remain on the displayfor 3 seconds or until a digit key is pressed for live dialing.All other function keys are inactive. Pressing an inactive function key will not give a key beep.8.1.2 Special Conditions1. To insert a pause in a phone number, press HOLD at the appropriate point when entering thephone number. This inserts a 2 second pause. For longer pauses, press HOLD two or moretimes. Each press makes the pause 2 seconds longer. A "P" will be displayed for each time apause is inserted.2. To change or replace a stored number, simply store a new number in its place.3. Beginning from a handset idle state, you can clear a number from memory by:Method 1a) Start with a clear display or press CLEAR/DEL until the display is cleared.b) Press PROG to enter PROGRAM mode.c) Enter the memory location (01..20).ORMethod 2a)Enter into MEM mode from handset idle mode.b)Enter the memory location to be cleared. Scrolling function keys can be used at this step.c)Press CLEAR/DEL for less than 1 second. The LCD will then display the following:LOCATION 15DELETEDd)The handset is still in MEM mode and the user can now exit by pressing OFF or select anothermemory location by entering another memory location number or by using the scroll keys. Repeat step(c) to clear out subsequent memory locations. All memories can be cleared in this way.Alternatively, press and hold the CLEAR/DEL key for more than 1 second to delete the entire contents ofspeed dial memory. The display will show the following for a final confirmation before the entire speed dialmemory is erased:DELETE ALL?DEL TO ALLOWPressing any key other than CLEAR/DEL will cancel the operation. Pressing CLEAR will confirm theoperation and the display will then show:

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 52 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.DELETING ALLLOCATIONSThe unit remains in MEM mode.4. After 30 seconds in MEM mode with no keys pressed, the unit will automatically exit MEM mode. Thisfeature is also active when a line is accessed.5. If more than 10 digits are programmed (maximum of 20 is allowed), then while reviewing the speeddial memory contents only the first 10 digits will be displayed on the second line of the display.8.1.3 Programming Ringer TypesThe handset ringer type may be programmed by the following sequence:1. Enter PROGRAM mode by pressing PROG.2. Press # key to select ringer program mode. The LCD will display"RINGER X SELECTED" where X is the current ringer selection between 1 and 5.RINGER 1SELECTED3. Press:1 to select ringer type 1 2 to select ringer type 2 3 to select ringer type 3 4 to select ringer type 4 0 to select ringer OFFThe LCD will display the new ringer type selected and will also generate one ring corresponding to the ringselected. Selecting ringer 0 will mute the ringer; the display will show “RINGER OFF”. Press # to hearthe ringer currently selected.Pressing an invalid digit key (5,6,7,8,9 and *) will result in an error tone with no subsequent action.Press PRG or OFF to exit the PRG mode. Press the PHONE to exit and access the line. All other functionkeys are ignored.9. Caller ID Display9.1 Caller ID Memory ViewingThe CALLER ID mode can be activated any time except during dialing and PROG mode. To enter thismode, press CALL ID momentarily. The unit will go into caller ID mode and will show the name for the mostrecent call, call # 1.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 53 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.When a call is being received, the display will appear as shown below:ABC COMPANY15036438981The display will display as much of the company name as it can on the first line. The second line willdisplay as much of the phone number as it can.To view the phone number and time/date stamp information, press and hold the 7PQRS key. Theinformation will be displayed as followed for as long as the key is pressed.503-64389818:30A AUG31If the first digit is a 1, then there is no hyphen between the area code and the main 7-digit number. Ahyphen is only inserted when the entire number field is 10 digits in length and the first digit is not a 1. Thetop line of the display will show a maximum of 11 digits. If more than 11 digits are sent, only the last 11digits are displayed.The bottom line of the display will show the time followed by either “a” or “p” to indicate AM or PM, thenfollowed by a 3 letter abbreviation for the month (in capital letters) and a 2 digit date. In the case wherethe time can be represented as a 3 digit number (all cases except 10:XX, 11:XX and 12:XX), only 3 digitsare shown as in the example above.When the contents of Caller ID memory is being manually reviewed, the name display is slightly different.The top line of the display is used to indicate the memory location number and the bottom line of thedisplay shows the name.CALL # 15ABC COMPANYUp to 12 name characters can be displayed. If the name field exceeds 12 characters in length, the 12thcharacter will be replaced with an to indicate that there are additional name characters not seen on thedisplay.To view the additional name field characters, press and hold the View key. This will overwrite the CIDmemory location number as well as the second line of the display to show up to a maximum of 15 namecharacters for the duration of the key press. The first 12 characters will be on the top line with up to 3additional characters on the second line. Once the view key is released, the display returns back tonormal.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 54 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.ABC COMPANYLTDIf no name information is sent in the CID packet, the name field is replaced with the number. All other keyfunctions and operations remain the same. See below:CALL # 15503-6438981Pressing # goes to the previous stored number using the following sequence: 01è02è03è04 ... 48è49è50. Pressing and holding the key will cause the numbers to scroll continuously at a rate of twiceper second until the key is released.Pressing *TONE goes to the next number stored using the following sequence: 01è50è49è48è47 ...02è01. Pressing and holding the key will cause the numbers to scroll continuously at a rate of twice persecond until the key is released.If the phone is on-hook, pressing the PHONE key will exit CALLER ID mode and dial out the last 7 digitsof the caller ID number displayed after a 2 second delay. If the phone is already off-hook (i.e. ready todial) and in Caller ID mode, pressing PHONE or CID will cause the unit to exit Caller ID mode and dial thelast 7 digits of the Caller ID number which was being reviewed. To exit Caller ID without dialing when off-hook, press OFF. The unit will also automatically exit CID without dialing after 30 seconds of inactivity.9.2 Caller ID Memory ClearingPressing the CLEAR /DEL button deletes the caller ID number displayed (for example at location 15) from thecaller ID memory. The older caller ID number will be moved forward by one location as shown in thefollowing sequence.15 ç 16 ç 17 ç 18 ç .... 48 ç 49 ç 50.Caller ID memory location 50 is now empty. The new caller ID number at location 15 will be displayed.9.2.1 Deleting Caller ID Memory LocationsWhile the phone is in CID mode, press the CLEAR/DEL key once to delete the current call and the displaywill show:

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 55 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.DELETINGSINGLE CALLPress and hold the CLEAR/DEL key for more than 1 second to delete the entire contents of CID memory.The display will show the following for a final confirmation before the entire CID memory is erased:DELETE ALL?DEL TO ALLOWPressing any key other than CLEAR/DEL will cancel the operation. Pressing CLEAR will confirm theoperation and the display will then show:DELETINGALL CALLSThe messages will remain on the display for 2 seconds and are then automatically cleared.9.2.2 Caller ID Memory OverflowIf the entire contents of CID memory is filled up (50 calls), the next call received will cause the oldest callto be automatically deleted.9.3 Caller ID With Call WaitingThe ability to decode and properly respond to the Caller ID with call waiting function has been built into thisunit.9.3.1 Basic OperationIf during a normal phone call another call comes in with CID information, alerting tones (subscriber alertsignal tone or SAS) will be heard in the handset earpiece to inform the user. The phone will mute bothaudio paths, acknowledge back to the CO via a DTMF tone and then receive, decode and display the newCID information.The new CID information will be displayed in the same manner as defined in section 25,1. The new CIDinformation will be displayed for 10 seconds and will then be stored in E2PROM.9.3.2 Switching CallsIf the user wishes to switch over to the new call, pressing the phone key will cause a hook switch flash andwill signal to the CO to place the original call on hold and then switch over to the new call. The new callwill remain connected until the user activates another hook switch flash to switch back to the first callagain.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 56 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.9.4 Caller ID MessagesCaller ID messages in the various test conditions are displayed as follows:Private:Test Name Test 1 Test 2 Test 3* see note 3Test 4 Test 5 Test 6ICLID NO. Blank Blank Blank Blank 604-2785555 604-2785555REASON FORNO.ABSENCEPPP P PPCALLERNAME Blank Blank Blank Blank Blank VTECHCANADAREASON FORNAMEABSENCEPPP P PPCALLQUALIFIERTIME & DATEAVAILABLE AvailableOr NotAvailableAvailableOr NotAvailableNotAvailable Available Available AvailableHANDSETDISPLAYTRANSMISSION ERROR TRANSMISSION ERROR PRIVATE PRIVATE PRIVATE VTECHCANADAVIEW ALL PRIVATE PRIVATE PRIVATE VTECHCANADATIME STAMP Time & Date 604-2785555Time & Date 604-2785555Time & DateOut of Area:Test Name Test 1 Test 2 Test 3* see note 3Test 4 Test 5 Test 6ICLID NO. Blank Blank Blank Blank 604-2785555 604-2785555REASONFOR NO.ABSENCEOOO O O OCALLERNAME Blank Blank Blank Blank Blank VTECHCANADAREASONFOR NAMEABSENCEOOO O O OCALLQUALIFIERTIME & Available Available Not Available Available Available

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 57 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.DATEAVAILABLE Or NotAvailable Or NotAvailable AvailableHANDSETDISPLAYTRANSMISSION ERROR TRANSMISSION ERROR UNAVAILABLE UNAVAILABLE UNAVAILABLEVIEW ALL UNAVAILABLE UNAVAILABLE UNAVAILABLE VTECHCANADATIME STAMP Time & Date 604-2785555Time & Date VTECHCANADA604-2785555Time & DateLong Distance Call:Test Name Test 1 Test 2 Test 3* see note 3Test 4 Test 5 Test 6ICLID NO. Blank Blank Blank Blank 1604-2785555 1604-2785555REASONFOR NO.ABSENCEO P O or P Blank Blank BlankCALLERNAME Blank Blank Blank Blank Blank VTECHCANADAREASONFOR NAMEABSENCEO P O or P Blank Blank BlankCALLQUALIFIER LLLLLLTIME &DATEAVAILABLEAvailable Available NotAvailable Available Available AvailableHANDSETDISPLAYUNAVAILABLE PRIVATE UNAVAILABLEOR PRIVATE TRANSMISSION ERROR 1604-2785555 VTECHCANADAVIEW ALL UNAVAILABLE PRIVATE UNAVAILABLEOR PRIVATE 1604-2785555 VTECHCANADATIMESTAMPTime & Date Time & Date 1604-2785555Time & Date 1604-2785555Time & DateNotes: 1) Long Distance Call Qualifiers are ignored2) Private Number without Name displays “Private” in the Name display modes and blank3) Test 3 for all the above tables signifies that even if the time and date are not received, the CIDwill still be considered as valid. The name and phone number will be displayed appropriatelywithout the time and date information.9.4.1 Message: UNAVAILABLEIf a CID message is received where the number is unavailable for any reason, the message“UNAVAILABLE” is displayed in place of the missing information.The following is seen when reviewing CID memory contents. When the call first comes in, the sameinformation is displayed, but the CID memory location is not shown.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 58 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.CALL # 01UNAVAILABLE9.4.2 Message: PRIVATEFor a caller ID number which is blocked by the caller, a ‘private’ message, the date and the time of thecall will be transmitted. The LCD will display a "PRIVATE" message for this call. This information willbe stored in the caller ID memory. When the call first comes in, the same information is displayed, but theCID memory location is not shown.CALL # 02PRIVATE9.4.3 Message: TRANSMISSION ERRORThe Caller ID data includes a checksum to determine if any errors occurred in the transmission. If thephone detects errors then the call will not be recorded but it will display an "TRANSMISSION ERROR"message on the LCD during the ringing.TRANSMISSIONERROR9.4.4 Message: ## NEW CALLSWhen calls are not answered, the handset will display the number of calls with CID information that camein since the last time CALLER ID mode was enabled. This message is displayed when the handset is inIDLE mode.12 NEW CALLSIf a call is answered when there are calls in CID memory that have not yet been viewed, even though thecall was answered, it will be treated as new call and added to the total number of calls not already viewed.If a call is answered while there are still unviewed Caller ID numbers in memory, this latest call will betreated as a new unanswered call in the message display of : “## NEW CALLS”. For instance, TheLCD displays “2 NEW CALLS” and the phone rings. The user answers the new call and then returns the

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 59 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.handset to idle state upon completion. Since the CID information from the previous 2 calls has not yetbeen viewed, the latest call is treated the same. The LCD will then display “3 NEW CALLS”.This is necessary since the number total of calls displayed is counted back from the most recent callreceived to the last time CID memory editing was active.If the unit is in Caller ID mode and no key has been pressed for more than 30 seconds, the unit willautomatically exit Caller ID mode. This feature is also active when a line is active.9.5 Receiving Caller ID While In Other ModesWhen the phone is on hold the audio paths are disabled. As a result, the Caller ID with call waitingnotification tone (SAS tone) is not heard by the user. Since the SAS tone is the only audible indication tothe user that new Caller ID information is coming and that there is a call waiting, in this condition theinformation is simply stored in E2 for later review.Also, in this condition (call on hold) the PHONE key is inactive so the user would first have to cancel holdbefore a line flash can be generated by pressing the PHONE key. If the user returns the phone to anactive line status in time to hear the SAS tone, they may still flash the line to switch to new call. This isfurther defined for the various operating modes below.9.5.1 MEM (Memory Dialing) MODEWith the phone on-hook, if the user is reviewing the contents of speed dial memory and a call is received,the unit will automatically exit mem mode, clear the display and then display the new Caller ID informationas defined in section 8.1.If the phone is off-hook, on hold and the user is reviewing the contents of speed dial memory when theCaller ID with call waiting notification is received, the Caller ID information is received, decoded and storedin E2PROM. The speed dial memory access is unaffected.The “XX NEW CALLS” count is incremented as a result of the new, unviewed Caller ID information whichwas stored in E2PROM. The “XX NEW CALLS” message is displayed when the handset is returned to idlemode.9.5.2 Caller ID ModeWith the phone on-hook, if the user is reviewing the contents of Caller ID memory and a call is received,the unit will automatically exit Caller ID mode, clear the display and then display the new Caller IDinformation as defined in section 25.1.If the phone is off-hook, on hold and the user is reviewing the contents of Caller ID memory when theCaller ID with call waiting notification is received, the new Caller ID information is received, decoded andstored in E2PROM. The Caller ID memory access in progress is unaffected with the exception of the factthat the Caller ID memory location numbers will change when the new call is stored.The “XX NEW CALLS” count is incremented as a result of the new, unviewed Caller ID information whichwas stored in E2PROM. The “XX NEW CALLS” message is displayed when the handset is returned to idlemode.9.5.3 Program ModeWhether the phone is on-hook or off-hook and on hold, if the user is in program mode and a call isreceived, the Caller ID information is received, decoded and stored in E2PROM. The programmingoperation is unaffected.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 60 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.The “XX NEW CALLS” count is incremented as a result of the new, unviewed Caller ID information whichwas stored in E2PROM. The “XX NEW CALLS” message is displayed when the handset is returned toidle mode.9.5.4 PredialWhen the phone is on-hook, if the user is manually entering digits on the LCD via the dia keypad(predialing) and a call is received, the display is cleared and the new Caller ID information is displayed asdefined in section 25.1.If the phone is off-hook and on hold when the Caller ID with call waiting notification isreceived, the Caller ID information is received, decoded and stored in E2PROM. Predialing is unaffected.The “XX NEW CALLS” count is incremented as a result of the new, unviewed Caller ID information whichwas stored in E2PROM. The “XX NEW CALLS” message is displayed when the handset is returned toidle mode.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 61 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.10. Controller10.1 General DescriptionThe Controller provides all of the control functions for VT3921 PBX system, the hardware interface to theCO lines, the electrical interface to other system devices through the expansion line, and the basecommunication for the remote cordless System Phones.10.2 Product OverviewThe Controller connects the system to the CO lines; serves as the base unit for 3 cordless SystemPhones; provides voice communication, control signaling, phase lock timing, and power to the systemexpansion line. It provides caller ID detection and distribution, auto attendant functions, fax switching, allof the control and timing of system functions, and RS232 connection for a computer.The CO line interface provides for transmission and reception of voice and data signals, ring detection,off/on hook switch, caller ID detection, parallel set detection, forced disconnect detection, lightningprotection, and large signal protection. The interface is a “dry” design (no DC current in the transformer)so a physical line termination must supply voltage as well as a load. There is a provision in the Controllerthat unused CO lines can be properly terminated by instruction from the Operator phone. The on/off hookswitch goes off-hook after the second ring in the auto attendant mode and after a call is answered by astation in the call ring through mode. The Caller ID detection supports Type I and Type II caller ID. Theparallel set detect circuit detects when another instrument that is hooked to CO line in parallel with thesystem goes off hook. This is convenient for tying other equipment such as fast modems, security systemdevices, etc in parallel with the system on CO line. The system detects the parallel equipment going offhook, considers the line busy, and prevents any system stations from accessing the line until the parallelequipment hangs up. The “forced disconnect” signal is a line current interruption provided by the CO toallow for immediate hang up of various equipment such as voice mail systems. The protection circuitagainst lightning and excess signal levels meets FCC and UL requirements. Fuses are included to preventpermanent damage from lightning strikes and allow for easy repair.The Controller includes the base RF unit and system connection for three 900 MHz Digital SystemCordless Phones. The Controller does not provide any handset cradles or any battery charging capability.The cradle with battery and spare battery charging capability are provided separately for remote usage.The system expansion line, is referred to the MAN line (Multiband Analog Network) for systemexplanation. The MAN line contains four duplex voice channels, a 42KHz signal for phase lock timing, adigital signaling channel, and line power for several stations on a single twisted pair wire. The transmittingand receiving of multiple signals on the line is accomplished by the CIS1000 VLSI device, for documentingpurposes it will be referred to as the MAN device. The digital signaling channel communicates betweenthe stations and the Controller at all times and is independent of the voice channels. The 42KHz signalallows all stations to phase lock to the Controller, which is required before the digital signaling channel canbe used. The power supplied to the MAN line from the Controller is 44 volts across the MAN line, whichprovides power for up to 14 devices on the same one pair in house telephone wire.Caller ID Type I information is detected at CO line interface and stored in the Controller. If the Controller isin the auto attendant mode, the caller ID is distributed to all phones with LCD displays that will ring. In thering through mode, the caller ID information will be distributed to all phones with caller ID displays.Caller ID type II CAS signal is detected at the CO line interface and is passed onto all phonescommunicating with that CO line so the phone can properly treat the caller ID

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 62 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.All system functions are programmed by the software contained in one EPROM in the Controller. There isno processor for controlling system functions in any of the stations. Control inputs from stations and outputto stations (LED light assignments, etc.) can be changed on a station device without changing any of theelectronics in that station.The electronics for a RS232 port to a computer is included on the Controller board. This part is presentlynot supported with software.Electronic Music-On-Hold is supported on the board, but will not be installed on units for the U.S. andCanadian markets. An external Music-On-Hold jack is provided and when an external source is pluggedin, the internal music is switched out.Fax switching is provided. After the Auto Attendant answers the CO line by going off hook, it allows asmall amount of time of quiet to determine if a fax signal is present. If a fax signal is detected, the call isimmediately transferred to an Adapter Box connected to a fax machine. There is also a message built intothe Auto Attendant that states, “to send a fax press the star key”. This allows people to send a faxmanually. This message can be turned on or off with the Operator phone.The Auto Attendant voice circuitry is set up to support three 90-second nonvolatile Voice Chips. Thisallows complete flexibility for each CO line. The Outgoing Message (OGM) can be programmed to be thesame for all lines or programmed individually for each line. The message on hold can programmed to bethe same for all three lines or different for each CO line. The system can be changed to just one 90second voice chip to save on system cost, but sacrifices some response time capability and flexibility. Touse just one 90 second voice chip does not require a PCB change but the PCB assembly is different andthe software would change.The Controller stores up to 30 individual numbers in memory for each station. In addition the Controllerstores up to 30 system wide numbers in memory that can be programmed by the Operator Phone (station“0”) and can be used by any station.The Controller is programmed to work efficiently with Voice Mail Systems connected through AdapterBoxes.11. Operator FeaturesThe Operator’s Features describes those features that can only be accessed by the Operator’s extension(800, 900, or 0) at station 0. In general, “Operator’s Features” are those features such as systemconfiguration that you do not want all of the users to access or change.This section describes only the operator specific features. In addition, the Operator’s telephone hasaccess to all of the standard features listed in the various System Phone Manuals.Note: The Operator’s station should be a VT3921 Series System Phone set to station number 0, NOT astandard telephone connected through an Adapter Box. A standard telephone connected through anAdapter Box will NOT have access to many of the advanced Operator Features listed in this manual.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 63 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.11.1 Operator Feature OverviewFeature DescriptionRECORD VOICEMESSAGE Records the outgoing and prompting messages.RECEPTI0NIST MODE Directs calls to the operator’s extension (800, 900 or 0) at station 0, withoutringing all telephones.VOICE MESSAGE The electronic receptionist greets callers.FAX MESSAGE The electronic receptionist explains the procedure to send a fax.SET UP – HOLD TIME Sets the amount of time a call is placed on hold before it rings again.SET UP- HOLDMESSAGE TIME Sets the amount of time before Message 3 is played during Music on Hold.CALL RING THROUGH If Call Ring Through is enabled the system will not pick up ringing lines,instead it will ring all telephones and answering machines for as long as theringing continues.LINE PRIVACYOVERRIDE Allows some or all stations to interrupt/join calls on other lines.MUSIC ON WAIT Plays music or an information message instead of ringing tones while acaller waits to be connected.NIGHT MODE Sends calls to the answering machine or voice mail system (if available)without ringing all telephones.SYSTEM-WIDEDIRECTORY Stores frequently dialed numbers accessible from all stations.CALL SCREENING Requires the caller to enter a three-digit security code before ringingthrough.CALL SCREENING-SECURITY CODE Defines the three-digit security code that is required if Call Screening isenabled.SET UP OPTIONALMAILBOX Sets up mailbox numbers that are different from extension numbers.DEDICATED FAX LINE Sets the system to send Line 3 calls to the fax machine.LINE TERMINATION Terminates an unused line internally to prevent noise on other lines.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 64 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.11.2 Record Voice MessagesRecords the outgoing and prompting messages. The System has prerecorded generic messages, forcustom message recording follow the steps below.Please note that different messages can be recorded on each line to be used for separate companies orresidential use. If the system will be used for one company/one greeting, you must record the samemessage on all three lines.You may rerecord your message at any time and the previous recording will be erased automatically.1. Go off hook on Line 1.2. Press FEATURE key.3. Press 0, press 3, and then press 4.The telephone will beep once and the PROGRAM light will come on.4. Press 1, 2, or 3 to select the line you want to record on.To record on Line 1, press 1, to record on Line 2, press 2; to record on Line 3, press 3.5. Press 1, 2, 3, 4, or 5 on the touch tone keypad to select messages.Key Message Selected1Message 1 (50 sec. max.) “outgoing greeting”2Message 2 (20 sec. max.) “night mode message”3Message 3 (10 sec. max.) “music on hold or # key message”4Message 4 (5 sec. max.) “transfer message”5Message 5 (5 sec. max.) “fax message”6. To Record:Press *. After the beep, speak clearly into the handset. Press ‘0’ when you have finished recordingyour message. The telephone will beep twice to denote the end of message. Go to step 4 to record orplay messages. Proceed to step 6 to complete this feature.OR6. To Play:Press #, the message will play. Proceed to step 6 to complete this feature.7. Go on hook.The telephone will beep twice and the PROGRAM light will go off.Note: remember to repeat the same steps 4 through 6 above to record messages on each line (1, 2, 3).

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 65 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.11.2.1 Examples of Voice Messages:Message 1Message 1 is always used as an outgoing greeting.For example, “Thank you for calling Jim’s Life Insurance, please enter an extension number now, or stayon the line and your call will be answered in a moment”.Message 2Message 2 is always used as the Night Mode greeting.Message 3Message 3 is used for two different purposes. One purpose is to have a short information message orapology played during the Music on Hold, and the other purpose can be to provide information such asstore office hours and directions that can be played if the caller is instructed to press the # key.Note: See Set Up – Hold Message Time to set the time that the message during Music on Hold is played.If you want to use the # information message, you must set the Hold Message Time to ‘0” (default).Message 4Message 4 is called the “transfer message”. It is always played before a call is transferred by the system.This does not apply to calls transferred from extension to extension.For example, “Please hold, while your call is being transferred”, or “I’ll transfer you now.”Message 5Message 5 is called the “fax message”. It can be enabled or disabled following the instructions describedin the section titled Fax Message. Message 5 is always used to describe the manual fax transfer method.For example, “To send a fax, press the star key”.Note: The operation of the voice prompting is affected by the system settings described in the sectionstitled Voice Message, and Fax Message.11.3 Receptionist ModeDirects calls to the operator’s extension (800, 900, or 0) at station 0, without ringing all telephones.Enable Receptionist Mode1. While on hook, press FEATURE.2. Press 0, press 1, then press 1 again.3. Using the touch tone keypad, enter the line number by pressing 1, 2, or 3 to enable the ReceptionistMode for each line. To enable the Receptionist Mode for all 3 lines, press 4.The telephone will beep once to notify you that the Receptionist Mode is enabled.4. To enable other lines, repeat steps 1-3.Disable Receptionist Mode1. Repeat the above steps 1-3. To disable the Receptionist Mode for all three lines, press 0.The telephone will beep twice to notify you that Receptionist Mode is disabled. All unanswered calls toa particular extension or undirected calls will ring at station 0.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 66 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.11.4 Voice MessageThe electronic receptionist greets callers. The System comes configured with the Voice Message enabledon all three lines.Enable Voice Message1. While on hook, press FEATURE.2. Press 0, press 1, then press 4.3. Using the touch tone keypad, enter the line number by pressing 1, 2, or 3 to enable the Voice Messagefor each line. To enable the Voice Message for all 3 lines, press 4.The telephone will beep once to notify you that the Voice Message is enabled.4. To enable other lines, repeat steps 1-3.Disable Voice Message1. Repeat the above steps 1-3. To disable the Voice Message for all three lines, press 0.The telephone will beep twice to notify you that the Voice Message is disabled. When the VoiceMessage is disabled, incoming callers to the system will immediately hear ringing or Music on Wait (ifenabled). When the Voice Message (Messages 1-3) is disabled, the Fax Message (Message 5) willalso be disabled.11.5 Fax MessageThe electronic receptionist explains the procedure to send a fax.Enable Fax Message1. While on hook, press FEATURE.2. Press 0, press 1, then press 3.The telephone will beep once to notify you that the Fax Message is enabled.Disable Fax Message1. While on hook, press FEATURE.2. Press 0, 1 then 3.The telephone will beep twice to notify you that the Fax Message is disabled.Whenever an Adapter Box is plugged in with the Device Switches set to a fax machine, the Fax Message(Message 5) is automatically enabled.11.6 Set Up – Hold TimeSets the amount of time a call is placed on hold before it rings again. The System comes configured withthe Hold Time set at one minute.1. While on hook, press FEATURE.2. Press 0, press 3, then press 2.The telephone will beep once, and the PROGRAM light will turn on.3. Using the touch tone keypad, enter a single key, 1 - 9, for the amount of time (in minutes) a callershould be on hold.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 67 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.The telephone will beep once, and the PROGRAM light will turn off. If an invalid number is enteredyou will hear an error tone (one low tone).11.7 Set Up – Hold Message TimeSets the amount of time before Message 3 is played during Music on Hold. The System comes configuredwith the Hold Message Time disabled.1. While on hook, press FEATURE.2. Press 0, press 3, then press 5.The telephone will beep once, and the red PROGRAM light will turn on.3. Using the touch tone keypad, enter a single key, 1 - 9, for the amount of time (in 10 secondincrements) before Message 3* is played to the caller during Music on Hold.The telephone will beep once, and the red PROGRAM light will turn off. If an invalid number isentered you will hear an error tone (one low tone).Note: If ‘0” is entered, the message will be disabled.*The messaging mode must be properly set in order for Message 3 to play during Music on Hold. Torecord Message 3, see Record Voice Messages.11.8 Call Ring ThroughIf Call Ring Through is enabled, the system will not pick up ringing lines, instead it will ring all telephonesand answering machines for as long as the ringing continues. The System comes configured with CallRing Through disabled on all three lines.Enable Call Ring Through1. While on hook, press FEATURE.2. Press 0, press 1, then press 9.3. Using the touch tone keypad, enter the line number by pressing 1, 2, or 3 to enable Call Ring Throughfor each line. To enable Call Ring Through for all 3 lines, press 4.The telephone will beep once to notify you that Call Ring Through is enabled.4. To enable other lines, repeat steps 1-3.Disable Call Ring Through1. Repeat the above steps 1-3. To disable Call Ring Through for all 3 lines, press 0.The telephone will beep twice to notify you that Call Ring Through is disabled.Note: To detect incoming faxes or allow extension dialing on any line, Call Ring Through must bedisabled.11.9 Line Privacy OverrideAllows some or all stations to interrupt/join calls on other lines. The System comes configured with LinePrivacy Override disabled for all stations. The Line Privacy Override feature will not allow FAX or modemcalls to be interrupted.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 68 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.Enable Line Privacy Override1. While on hook, press FEATURE.2. Press 0, press 2, then press 5.The telephone will beep once.3. Using the touch tone keypad, enter the station number (00 - 13) that you want to modify.The telephone will beep after a valid station number is entered.Note: One digit station numbers are preceded by zero. To modify all telephones at the same time,enter ‘99’.4. Press 1.The telephone will beep once to notify you that Line Privacy Override is enabled.Disable Line Privacy Override1. Repeat the above steps 1-3.2. Press 0.The telephone will beep twice to notify you that Line Privacy Override is disabled.11.10 Music On WaitPlays music or an information message instead of ringing tones while a caller waits to be connected. TheSystem comes configured with Music on Wait disabled on all three lines.Enable Music on Wait1. While on hook, press FEATURE.2. Press 0, press 1, then press 5.3. Using the touch tone keypad, enter the line number by pressing 1, 2, or 3 to enable the Music on Waitfor each line. To enable the Music on Wait for all 3 lines, press 4.The telephone will beep once to notify you that Music on Wait is enabled.4. To enable other lines, repeat steps 1-3.Disable Music on Wait1. Repeat the above steps 1-3. To disable the Music on Wait for all three lines, press 0.The telephone will beep twice to notify you that Music on Wait is disabled.Note: Music on Wait requires a music source connected to the Controller. Refer to the System Manual.11.11 Night ModeSends calls to the answering machine or voice mail system (if available) without ringing all telephones.Enable Night Mode1. While on hook, press FEATURE.2. Press 0, press 1, then press 2.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 69 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.3. Using the touch tone keypad, enter the line number by pressing 1, 2, or 3 to enable the Night Mode foreach line. To enable the Night Mode for all 3 lines, press 4.The telephone will beep once to notify you that Night Mode is enabled.4. To enable other lines, repeat steps 1-3.Disable Night Mode1. Repeat the above steps 1-3. To disable the Night Mode for all three lines, press 0.The telephone will beep twice. All undirected calls will immediately be sent to the answering machineor voice mail system (if available). Calls to a particular extension will ring through. Fax and modemstations are not affected by Night Mode.11.12 System – Wide DirectoryStores frequently used numbers that are accessible from all stations.1. While on hook, press MEMORY.The telephone will beep once and the PROGRAM light will turn on.2. Using the touch tone keypad, enter the two digit directory storage location between 00 - 29.The telephone will beep twice after the two digits are entered.3. Using the touch tone keypad, enter the telephone number (up to 16 numbers and pauses).The pause key puts a five-second pause into the number.The telephone will NOT beep while the telephone number is being entered.4. Press MEMORY.The telephone will beep twice and the PROGRAM light will turn off.Dialing System- Wide DirectoryDials frequently used numbers from any station.1. Go off hook and listen for dial tone.2. Press *53. Using the touch tone keypad, enter the 2-digit directory storage location.Valid numbers for the System-Wide Directory are from 00 to 29.ONLY THE OPERATOR, System Phone Station 0, can store numbers in the System-Wide Directory.Refer to 11.13 for details on storing numbers in the System-Wide Directory.11.13 Call ScreeningRequires the caller to enter a three-digit security code before ringing through.Enable Call Screening1. While on hook, press FEATURE.2. Press 0, press 1, then press 7.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 70 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.3. Using the touch tone keypad, enter the line number by pressing 1, 2, or 3 to enable Call Screening fora particular line. If you want to enable Call Screening for all three lines, press 4.The telephone will beep once to notify you that Call Screening is enabled for the line(s).4. To enable the other lines, repeat steps 1-3.If the incoming caller fails to enter the correct Security Code, then all System Phones will beep two timesto notify you that the call is being transferred to the answering machine or Voice Mail System (if available).Disable Call Screening1. While on hook, press FEATURE.2. Press 0, press 1, then press 7.3. Using the touch-tone keypad, enter the line number by pressing 1, 2, or 3 to disable Call Screening fora particular line. If you want to disable Call Screening for all three lines, press 0.The telephone will beep twice to notify you that Call Screening is disabled for the line(s).4. To disable the other lines, repeat steps 1-3.11.14 Call Screening – Security CodeDefines the three-digit security code that is required if Call Screening is enabled.1. While on hook, press MEMORY.The telephone will beep once and the PROGRAM light will turn on.2. Press 3.3. Press 0.The telephone will beep twice.4. Using the touch-tone keypad, enter three digits. (This can also include the * and # keys.)5. Press MEMORY.The telephone will beep twice to notify you that the new security code has been entered, and thePROGRAM light will turn off.11.15 Set Up – Optional MailboxSets up mailbox numbers on an optional Voice Mail System (VMS) that are different from extensionnumbers.Note: Use this feature only if you desire a mailbox that is different from the extension number. Most VMSusers will not have to use this feature.1. While on hook, press FEATURE.2. Press 0, press 3, then press 3 again.The telephone will beep once and the PROGRAM light will turn on.3. Using the touch-tone keypad, enter the primary or secondary extension number.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 71 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.The telephone will beep once.4. Using the touch-tone keypad, enter the new mailbox number, up to five digits.5. Press FEATURE.The telephone will beep twice and the PROGRAM light will turn off.The default mailbox number is the same as the extension number. For example, if extension 803 is notanswered, then the system will automatically (VMS Mode must be enabled for that station.) dial mailbox803 on the VMS. The general mailbox is used to record messages for calls that were not directed tospecific extensions. The general mailbox number is 8XX, where XX is the station number of the AdapterBox that the VMS is connected to.Set Up - Optional Mailbox allows you to assign a mailbox number that is different from the extensionnumber. For example, using an optional mailbox, you may set the system to dial mailbox 9 if extension803 is not answered.In addition to setting up the voice mailboxes. There could be a need to set up additional featuresdepending on your Voice Mail System. Ask your VMS vendor.1. While on hook, press MEMORY.The telephone will beep once and the PROGRAM light will turn on.2. Using the touch-tone keypad, enter the two-digit feature from the table below.The telephone will beep twice.3. Using the touch-tone keypad, enter the required key sequence.4. Press MEMORY.The telephone will beep twice to notify you that the new key sequence has been entered, and thePROGRAM light will turn off.2 DigitFeature Description Sequence31 Pre-fix code, some VMS require a special codebefore the mailbox number to tell the VMS thatyou wish to retrieve messages.Any digit32 Post-fix code, some VMS require a specialcode after the mailbox number to tell the VMSthat you wish to retrieve messages.Any digit33 Night Mode mailbox number. Any digit11.16 Dedicated Fax LineSets the System to send Line 3 calls to the fax machine.Enable Line 3 to Always Ring the Fax Machine1. While on hook, press FEATURE.2. Press 0, press 1 then press 6.The telephone will beep once to notify you that all calls on Line 3 will be directed to the fax machine.Disable Line 3 to Always Ring the Fax Machine

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 72 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.1. While on hook, press FEATURE.2. Press 0, press 1 then press 6.The telephone will beep twice to notify you that all calls on Line 3 will be directed as normal.Although the System allows you to share your fax and voice telephone lines, some users desire an outsideline that always rings the fax machine directly. You may still access Line 3 from any telephone to makeoutgoing calls if you wish. The system protects fax calls to safeguard against accidentally ruining a faxtransmission.For more details, see the System Manual How to... Set Line 3 to Always Ring the Fax Machine.11.17 Line TerminationTerminates an unused line internally to prevent noise on other lines. If not all telephone lines areconnected to the Controller, some lines might need to be terminated to prevent noise from filtering to otherlines.Enable Line Termination1. While on hook, press FEATURE.2. Press 0, press 3, then press 7.3. Using the touch-tone keypad, enter the line number by pressing 1, 2, or 3 to enable the LineTermination for each line. To enable the Line Termination for all 3 lines, press 4.The telephone will beep once to notify you that the Line Termination is enabled.4. To enable other lines, repeat steps 1-3.Disable Line Termination1. Repeat the above steps 1-3. To disable the Line Termination for all three lines, press 0.The telephone will beep twice to notify you that Line Termination is disabled.11.18 Program Handset Security CodeDefines the security code for the VTECH handset.1. While on hook, press FEATURE.2. Press 0, press 3, press 8.The telephone will beep once and the PROGRAM light will go on3. Using the touch tone keypad, enter the 2-digit station number.The telephone will beep once.4. Using the memory keys, enter the new 6 character security code.For letters “A” through “F”, use the following:A Memory key 10B Memory key 11C Memory key 12D Memory key 13E Memory key 14

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 73 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.FShift keyThe telephone will beep twice and the PROGRAM light will go off.11.19 Reset FeatureReset the phone system back to factory defaults.1. While on hook, press FEATURE key.2. Press 0, press 2, press 7.The telephone will beep once and the PROGRAM light will go on.3. Using the touch tone keypad, enter the following:2 digits Description00 to 13 Reset the specified station to factory defaults(Speed dial memory locations are not affected).66 Reset the Operator Features to factory defaults.99 Reset all stations and Operator Features to factorydefaults including all speed-dial memory locations.The telephone will beep twice and the PROGRAM light will go off.11.20 Operation for Pulse DialingThe way the VT3921 will handle pulse dialing is as follows:1. The system will default to tone dialing.2. To set the system to pulse dialing, the system is programmed to this mode by using the “0” stationphone and will be explained in the Operators Manual.3. For the cordless phones, when the system has been set to pulse dialing and DTMF tones are requiredfor entering information requested by the external party (for bank transactions, etc.), the “0” key ispressed, then the required DTMF tones are entered. After hanging up the phone, the mode for thatindividual instrument reverts to pulse mode. This is a popular method used by Panasonic and othermanufacturers.4. There will be no individual tone/pulse switches for the cordless phones.5. If an individual needs to dial the CO line with tones when the system is in the pulse mode, the “0” mustbe pressed prior to dialing. This would be used when some lines require pulse dialing and other linesrequire tone dialing.EEPROM Back SettingsSome system settings and memory numbers are stored in EEPROM. The following table shows whichsettings are backed in EEPROM and their default values the first time the system is powered up.Adapter Box / System PhonesSettings/Features EEPROM Backed DefaultCall Forwarding No OffCallback/Camp-on No Off

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 74 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.Do Not Disturb (DND) No OffVoice Mail Mode Yes OffLine Ring Preference Yes L1, L2, L3, COMLine Select Order Yes L1, L2, L3, COMHeadset Mode Yes OffFlash Time Yes Normal (0.5 Sec)Tone/Pulse No ToneOperator FeaturesSettings/Features EEPROM backed DefaultReceptionist Mode Yes OnNight Mode Yes OffFax Message Yes OnVoice Message Yes OnMusic on Wait Yes OffDedicated Fax Line Yes OffMessaging Method Yes Method 1Security Code Yes NoneHold Time Yes 1 MinuteSet Up Optional Mail Box Yes Same as ExtHold Message Time Yes 30 SecondsCall Ring Through Yes OffCall Screening Yes OffLine Termination Yes OffVoice Mail System EndSequence Key Yes # KeyLine Privacy Override Yes None

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 75 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.12. Adapter Box12.1 General DescriptionThe Adapter Box interfaces and converts any standard telephone instrument to the VT3921 3 line system.The Adapter Box provides the power and ring to emulate the normal CO line. The Adapter Box convertsany one line device to a three line system device. Standard telephone equipment can include telephonesof any type, fax machines, modems, voice mail ports, etc.12.2 Product OverviewThe Adapter Box is designed to supply the power and ring voltage to support any one instrument that isdesigned to interface to the CO line. It can generally supply enough power and ring current for twomodern instruments and is often used this way.A wall powered (12V AC 830ma Class 2) transformer power module supplies power to the Adapter Box.The station number for the adapter Box included with the VT3921 system is preset to station 4. Foradditional Adapter Boxes, the station number must be set to a unique number (higher than 4). The stationnumbers that are allowed for the system are 0 through 13, with 0 through 4 reserved for instrumentssupplied with the basic system. Up to 9 additional Adapter Boxes can be added to the system as long asthe total of 14 stations is not exceeded.There are lights on the front of the Adapter Box to indicate when lines are in use.A high voltage is supplied to the connected instrument when on hook. This is required to interface withdevices that are equipped with parallel set detects.The Adapter Box also has switches to indicate what type of device is attached. The most commonly useddevice types are marked on the box for convenience. A full list is shown in the USER FEATURES sectionin this document.Most of the PBX features offered by the system phones are available to any instrument attached to theAdapter Box using the key sequences defined in the USER FEATURES section. These key sequencesare sent to the Controller as DTMF tones. Therefore, any instrument connected to the Adapter Box mustbe set to TONE to access the system features. To send pulses to the CO line, the instrument connectedmust be set to PULSE.13. User Features13.1 User Feature OverviewFeature DescriptionSELECTING LINE Selects the line number.MAKING CALL - INTERNAL (COM) Places a call to an inside extension number.MAKING CALL - OUTSIDE Places a call to an outside number.PRIVATE HOLD Places a call on hold that can only be retrieved from thatstation.GLOBAL HOLD Places a call on hold that can be retrieved from any station.GLOBAL HOLD PICK UP Allows you to connect to lines on Global Hold.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 76 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.CALL TRANSFER Transfers an incoming call to another extension.CALL WAITING Receives calls while you are on another line.REDIAL Dials the last number called.CALL CONNECT/PICK UP Connects/picks up other ringing extensions.PULSE/TONE SELECTION FORPROGRAMMABLE NUMBERS Determines whether the system dials the Speed Dial numbersand System-Wide Directory numbers as touch-tones or pulses.SPEED DIALING AND STORING Stores and dials frequently called numbers.SYSTEM-WIDE DIRECTORY Dials frequently used numbers from any station.RING PAGING Causes all non-busy telephones to ring.BROADCAST Broadcasts on the COM line to all System Speaker Phones.CONFERENCE CALLS Connects multiple parties together in a telephoneconversation.CALL FORWARDING Redirects calls to another station’s extension.CALLBACK/CAMP-ON Rings back when the busy extension number becomes free.COM CALLBACK/CAMP-ON Rings back when the COM line becomes free.DO NOT DISTURB (DND) Turns off all rings to a particular station.VOICE MAIL SYSTEM MODE Directs unanswered calls to the optional Voice Mail System(VMS).FLASH TIME ADJUST Adjusts FLASH timing when using your telephone’s FLASHkey (if applicable).SET UP - LINE RING PREFERENCE Selects which telephone lines will ring at a particular station.SET UP - LINE SELECT ORDER Sets up order of available line selection.RECEIVING A FAX Allows a particular station to receive a fax.SENDING A FAX Allows a particular station to send a fax.13.2 Installing The Adapter BoxInstall the Controller BEFORE installing the Adapter Box or you may damage the Adapter Box.WARNING: Do not connect Adapter Boxes to telephone company lines or the equipment may bedamaged.1. Before plugging in the Adapter Box, assign a station number to each Adapter Box and System Phone.The last four of the seven switches on the Adapter Box are used to set the station number of theAdapter Box.READ IMPORTANT NOTE BELOW!EVERY STATION NUMBER ON ADAPTER BOXES AND SYSTEM PHONES MUST BE DIFFERENT.Devices with the same station number will not operate.StationNumbers Adapter BoxStation Switches PrimaryExtension SecondaryExtension

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 77 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.(on back of box) Numbers Numbers123Note: The Adapter Box station numbers must be programmedstarting from Station 4 since Station 0, 1, 2 and 3 are beingoccupied by a Speaker Phone and 3 Cordless Phones4804 9045805 9056806 9067807 9078808 9089809 90910 810 91011 811 91112 812 91213 813 913Table 1 - Assigning Station Numbers1 A single 0 will also dial station number 0. In order to access operator features, station number 0 must bea System Phone.Refer to the section titled Switch Setting For Station Numbers for further information.2. Adjust the Device Switches.The first three of the seven switches are the Device Switches that set the type of equipment to whichthe Adapter Box will be connected - e.g., FAX, MODEM, ANSWERING MACHINE, TELEPHONE.Device Type Device DIP Switches ExtensionNumbers DescriptionSW1 SW2 SW3TELEPHONE UP UP UP All TelephoneFAX UP UP DWN All Fax machineMODEM UP DWN UP All ModemANSWERINGMACHINE DWN UP UP All Answering machineAUX1 UP DWN DWN All Phone and answering machineAUX2 DWN UP DWN All Voice mail systemAUX3 DWN DWN UP All Phone, fax and answering machineAUX4 DWN DWN DWN 0 to 10 Voice and fax system11 and up Paging systemTable 2 - Assigning Device SwitchesTelephone (UP, UP, UP)

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 78 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.This setting is used for all types of standard telephone equipment except fax machines, answeringmachines, modems, paging systems, and voice mail equipment. Standard telephone equipment includesstandard telephones, speaker telephones and cordless telephones.The Adapter Box will ring the equipment in the following cases:• Extension is dialed.• Global ring of all telephones. To adjust the ring delay, refer to Set Up - Line Ring Preference.Fax Machine (UP, UP, DWN)This setting is for fax machines that are not combined with any other equipment, or a fax/modem personalcomputer board used as a standard system fax. Refer to Section III, Using Faxes and Modems, for detailson how the fax machine works in this mode.The Adapter Box will ring the equipment in the following cases:• Extension is dialed.• A fax tone is detected on a line.• A “star” key is detected during an incoming call.Modem (UP, DWN, UP)This setting is for modems and private fax machines. Refer to Section III, Using Faxes and Modems, fordetails on how the modem and private fax works in this mode.The Adapter Box will ring the equipment in the following cases:• Extension is dialed.Answering Machine (DWN, UP, UP)This setting is for answering machines that service all extensions. The answering machine should be setto pick up on the first ring or the lowest number of rings available. The system treats the answeringmachine in two different modes:Standard Mode - After all extensions ring four times, the system will ring the answering machine.Night Mode - The system directs all calls that are not fax or extension calls directly to the answeringmachine. Extension calls ring three times on the dialed extension then ring the answering machine withoutringing all telephones.The Adapter Box will ring the equipment in the following cases:• Extension is dialed.• Call is not answered after ringing an extension during Night Mode.• After four global rings to all telephones.AUX1 (UP, DWN, DWN) Telephone and Answering MachineThis setting is used when one Adapter Box shares both telephone and answering machine functions. Forexample, use this setting for a telephone answering machine or in cases when a separate standardtelephone and answering machine are connected through a three-way adapter. When this station rings,the answering machine will pick up after the number of rings set on the answering machine. In NightMode, all calls without specific extension numbers will ring this station only immediately. There should beonly one station in a system that is set to AUX1 or Answering Machine Mode.The Adapter Box will ring the equipment in the following cases:• Extension is dialed.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 79 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.• Global Rings at all telephones (refer to Set-Up Ring Line Preference to adjust the ring delay).• Call is not answered after ringing an extension during Night Mode.• No extension is dialed during Night Mode.AUX2 (DWN, UP, DWN) Voice Mail System (VMS)This setting is used when this Adapter Box connects the VT3921 system to a personal computer VoiceMail Card. The VMS should be set to pick up on the first ring on the lowest number of rings. The extensionnumber should be set lower than the answering machine extension if the VMS is to pick up first.Message Mail BoxDEFAULT MESSAGE 8XX*INSTRUCTIONAL MESSAGE 9XX**NIGHT MODE 116* XX is the station number of the Adapter Box connected to the VMS.** This message will play when you dial or transfer calls to the VMS.The Adapter Box will ring the equipment in the following cases:• Extension is dialed.• Call is transferred to VMS using VMS transfer (#, 0, extension number).• Call not answered and VMS Mode is enabled at the station.• Call not answered and the system is in Night Mode.• After four global rings to all telephones.After the VMS picks up, the VT3921 System will dial the appropriate mailbox. Refer to How To ... InstallPC Based VMS in the System Manual for further information.AUX3 (DWN, DWN, UP) Telephone, Fax and Answering MachineThis setting is for using equipment that combines these three functions. The VT3921 system will ring thisextension as a telephone extension. It will also ring this extension when it detects a fax tone or the “star”key is pressed from outside. It will also ring this extension when the system determines an answeringmachine is required. It is important to set the “number of rings before pick up” on thetelephone/fax/answering machine. Refer to the users manual of the telephone/fax/answering machine toset this number properly. This setting should not be used if there is an answering machine setting also inthe system.The Adapter Box will ring the equipment in the following cases:• Extension is dialed.• Global Rings at all telephones (refer to Set-Up Ring Line Preference to adjust the ring delay).• A fax tone is detected on a line.• A “star” key is detected during an incoming call.• Call is not answered after the extension during Night Mode.• No extension is dialed is dialed during Night Mode.AUX4 (DWN, DWN, DWN) Voice Mail and Fax System or Paging SystemOption 1, Station 0-10, Voice Mail and FaxThis setting is used when this station connects the VT3921 system to a Voice Mail/Fax card for a personalcomputer and both functions are to be used. When the system detects a fax tone, it will transfer the call tothe station and the fax tone is detected by the computer board and accepts the fax data. When the systemdetects that voice mail is needed, it will also call this station and the voice mail will be activated as long as

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 80 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.no fax tone is detected. Only one voice mail or fax function can occur at one time, so this setting is notrecommended for larger offices where a large fax could delay voice mail for extended periods.The Adapter Box will ring the equipment in the following cases:• Extension is dialed.• A fax tone is detected on a line.• A “star” key is detected during an incoming call.• Call is transferred to VMS using VMS transfer (#, 0, extension number).• Call not answered and VMS Mode is enabled at station.• Call not answered and the system is in Night Mode.• After four global rings to all telephones.After the VMS picks up, the VT3921 System will dial the appropriate mailbox.Option 2, Station 11-13, Loud Speaker PagingThis setting is used when this station is connected to a loud speaker pager. The pager should be set toautomatically hang up on as short a time as practical. In this mode, the system will hang up when theoriginator hangs up but will not put out a dial tone. Any telephone on the system can access this station bydialing this extension.The Adapter Box will ring the equipment in the following cases:• Extension is dialed.3. Plug the device into the Adapter Box and plug in the AC transformer.Connect the fax, modem, answering machine, or telephone to the connector labeled “DEVICE” on theAdapter Box. Attach the AC transformer plug to the Adapter Box power connector, and then plug theAC transformer into the wall socket.4. Plug the Adapter Box “IN-HOUSE WIRE” connector into the telephone wall jack, which in turn connectsto the in-house wiring.Using the cable furnished, connect the telephone jack to the connector labeled “IN-HOUSE WIRE” onthe Adapter Box.5. Test each device.If the device connected to the Adapter Box does not work, then check all connections to the box. Makesure the DEVICE and IN-HOUSE WIRE connections are not reversed.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 81 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.Note: The first time the Controller is turned on, all the red lights on the Adapter Box will flash until thesystem completes its self-configuration.13.3 Using Standard Telephone Equipment With The Adapter BoxAll of the features of the VT3921 System are accessible to standard touch-tone telephone equipmentinstalled using the Adapter Box except Mute and Release Line Privacy. This section of the manualdescribes how to access these features. A standard telephone with an Adapter Box cannot be used asstation 0 to program operator features. The headset features also are not available except with a SystemPhone. When reading the instructions, the “flash key” can be substituted with an on hook forapproximately half a second, then back off hook. On hook is when the handset is in the cradle and offhook is when the handset is picked up.13.4 Selecting LineSelects the line number.1. Remove the receiver (go “off hook”) and listen for dial tone.2. Press #.3. Using the touch-tone keypad, enter the line number.TouchTone Key Line Number1Line 12Line 23Line 34COMNote: If you don’t select a line, an available line will automatically be selected.By default the system will select the following order: Line 1, Line 2, Line 3, COM. To program an alternateline select order refer to Set Up - Line Select Order.13.5 Making Internal (COM) CallsPlaces a call to an inside extension number1. Check if the COM line is free.The red COM light will be off.2. Go off hook.You should hear a dial tone.3. Press #4.The red COM light on the Adapter Box will light up and you should hear a dial tone.5. Using the touch-tone keypad, enter the extension number.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 82 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.If you receive a fast busy signal after dialing a valid extension number, then the extension you are callingis in the “Do Not Disturb” mode. See Do Not Disturb for details.13.6 Making Outside CallsPlaces a call to an outside number.1. Go off hook and dial.OR1. Before dialing, select a specific line by pressing on the touch-tone keypad # 1, # 2, or # 3 to select line1, 2, or 3 respectively.If the red line light is on, then that line is not available.2. Go off hook and dial.The system will automatically select an available line for you. To adjust which line is selected first, refer toSet Up - Line Select Order.13.7 Global HoldPlaces a call on hold that can be retrieved from any station1. Press FLASH. (If your telephone is not equipped with a FLASH key then hold down the hook switch inthe receiver cradle for approximately half a second.)The red line light will blink slowly on all stations to indicate that the call has been placed on Global Hold.Retrieve Global Hold Call1. Go off hook.2. Press #.3. Select the line number that the call is held on.13.8 Private HoldPlaces a call on hold that can only be retrieved from that station.1. Press FLASH. (If your telephone is not equipped with the FLASH key then hold down the hook switch inthe receiver cradle for approximately half a second.)To verify that you are placing a call on Private Hold, check that the red line light is blinking quicklybefore pressing the FLASH key or pressing down the hook switch the second time.2. Wait approximately 2 seconds, then press FLASH slowly again.Verify that the call has been placed on Private Hold by checking to make sure that the red line light isblinking quickly. All other stations will have a solid red line light.Retrieve Private Hold Call1. Go on hook, then go off hook.When you go back off hook you will automatically be connected.Only one line can be placed on Private Hold at a time. To place additional lines on hold, use Global Hold.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 83 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.13.9 Global Hold PickupAllows you to connect to lines on Global Hold.1. Go off hook and listen for dial tone.2. Press 01.The system will connect you to a line on Global Hold.This feature allows you to connect to a line on Global Hold without having to know which particular line ison hold. If there are several lines on Global Hold, then each time this feature is executed, the system willselect Line 1, 2, and 3 respectively. If the line retrieved is not the line you want, be sure to place the callon Global Hold again, then go on hook and off hook before executing this feature again.This feature is particularly useful with cordless phones when you cannot see the Adapter Box. If all linesare occupied, when you go off hook, the system will automatically pick up the first line on Global Hold.13.10 Call TransferTransfers an incoming call to another extension.1. Press FLASH. (If your telephone is not equipped with a FLASH key then hold down the hook switch inthe receiver cradle for approximately half a second.)The red line light above the line will blink quickly to indicate that the call has been placed on PrivateHold.2. Using the touch-tone keypad, enter the extension number.Option 13. Hang up.If the call is not picked up, the call will ring back at your extension after five rings.OROption 23. Stay on the line, announce the transfer and hang up.When you hang up, the caller will automatically be connected to the extension you entered.OROption 33. If the extension is busy, reconnect to the caller by pressing on the touch-tone keypad # 1, # 2, or # 3 toretrieve line 1, 2, or 3 respectively.OROption 43. Stay on the line and announce the transfer. If the person at the extension is not able to talk, then whenthe extension hangs up, a beep in the earpiece notifies you that you are reconnected to the caller totake a message.Option 53. If the extension is busy, press FLASH and perform step 2 again.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 84 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.OROption 63. If the extension is busy, press FLASH twice to place the call on Global Hold.13.11 Call WaitingAllows you to receive calls while you are on another line.1. If you hear two or three beeps* in the earpiece while on another line, you can do one of the following:Option 12. Ignore the beeps and continue your conversation.If you ignore the beep, then the system will handle the call differently depending on which features areenabled.a) If no features are enabled, then the system will ring all phones followed by the answering machine (ifavailable).b) If Night Mode is enabled and an answering machine is available, then the system will ring theanswering machine directly.c) If Receptionist Mode is enabled, then the system will ring the operator’s extension, station 0.d) If a Voice Mail System is available and the VMS is enabled for that station, then the system will ring theVMS directly.* Two beeps indicate a primary extension ring, 8XX.Three beeps indicate a secondary extension ring, 9XX.OROption 22. Press FLASH. (If your telephone is not equipped with a FLASH key then hold down the hook switch inthe receiver cradle for approximately half a second.)3. Press #.4. Press 1, 2, or 3, depending on which line was ringing your extension.OROption 32. Press FLASH. (If your telephone is not equipped with a FLASH key then hold down the hook switch inthe receiver cradle for approximately half a second.)3. Hold down the hook switch until the telephone rings. Then release the hook switch to connect to thesecond call.To return to the original call, go on hook, then off hook.13.12 RedialDials the last number called.1. Go off hook.2. Press 04.The system will pause for a moment and then dial the number.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 85 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.13.13 Call Connect/PickupAllows you to connect to another ringing station. Also known as “Call Pick Up”.Extension Connect1. Go off hook.2. Press 003.3. Using the touch-tone keypad, enter the ringing station’s extension number.Global Connect1. Go off hook.2. Press 03.You cannot Call Connect to calls ringing back either from a hold or calls ringing back after anunsuccessful transfer. You cannot Global Connect to COM calls or transferred calls13.14 Pulse/Tone Selection For Programmable NumbersDetermines whether the system dials the Speed Dial numbers and System-Wide Directory numbers astouch-tones or pulses.Enables the System to Dial Stored Numbers as Pulses1. Go off hook.2. Press 001.The telephone will beep twice in the earpiece to notify you that the system will dial stored numbers aspulses.Enables the System to Dial Stored Numbers as Touch Tones1. Go off hook.2. Press 001.The telephone will beep once in the earpiece to notify you that the system will dial stored numbers astouch-tones.The selection between touch-tone or pulse dialing is made by a switch setting on the standard telephoneequipment. The pulse/tone selection described only affects the Speed Dial numbers and System-WideDirectory.Some areas may require pulse dialing. In these areas you should set the pulse/tone selection as pulse.13.15 Speed Dialing And StoringStores and dials frequently called numbers.Store a Speed Dial Number1. Go off hook and listen for dial tone.2. Press #6.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 86 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.3. Using the touch-tone keypad, enter the 2-digit Speed Dial Memory Location.The telephone will beep twice in the earpiece to confirm that a valid location has been entered. If youenter an invalid memory location, you will receive a busy signal in the earpiece.4. Using the touch-tone keypad, enter the telephone number (up to 16 numbers and pauses). To enter a‘pause’, press FLASH. (If your telephone is not equipped with the FLASH key then hold down the hookswitch for approximately half a second.)The pause will be four seconds long.5. Go on hook.The 2-digit Speed Dial Memory Location number must be between 00 and 29.Adapter Box telephones can program only one telephone number at a time.Dial a Speed Dial Number1. Go off hook and listen for dial tone.2. Press #5.4. Using the touch-tone keypad, enter the 2-digit Speed Dial Memory Location.The 2-digit Speed Dial Memory Location number must be between 00 and 29.13.16 Uses Of System – Wide DirectoryThere are two general methods to use the System-Wide Directory.Method 1A list of all commonly called numbers can be compiled and stored in directory storage locations. Thedirectory location list can be given to everyone who uses the system.Method 2Individuals can be assigned their own directory locations. Then each person can access their own storeddirectory locations from any station in the system.Method 1 Example:01 - Building Maintenance02 - Pizza Delivery03 - Major Customer No. 104 - Major Customer No. 205 - Off-site officeMethod 2 Example:00 -09 Jim’s numbers10 - 19 Scott’s numbers20 - 29 Tara’s numbersJim could go to any station in the system and dial his System-Wide Directory numbers.ONLY THE OPERATOR, System Phone Station 0, can store numbers in the System-Wide Directory.Refer to the Operator’s Manual for details in storing numbers in the System-Wide Directory.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 87 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.13.17 Dialing System – Wide DirectoryDials frequently used numbers from any station.1. Go off hook and listen for dial tone.2. Press 05.3. Using the touch-tone keypad, enter the 2-digit directory storage location.Valid numbers for the System-Wide Directory are from 00 to 29.ONLY THE OPERATOR, System Phone Station 0, can store numbers in the System-Wide Directory.Refer to the Operator’s Manual for details on storing numbers in the System-Wide Directory.13.18 Ring PagingCauses all non-busy telephones on the system to ring.1. Select the COM line by pressing # 4.2. Press 02.If no telephones are available, then a busy signal will sound in the earpiece.Ringing stops when any station answers the call. This feature can be used to see if you are the onlyperson in the building.13.19 BroadcastBroadcasts on the COM line to all System Speaker Phones.1. Go off hook and listen for dial tone.If all lines and COM are in use, then a busy tone will be heard, and this feature cannot be performed.Hang up and try again later.2. Press 06.If the COM line is available, the system will select it. All System Speaker Phones will emit a tone, thenyour voice will be broadcast through the speakers of all System Speaker Phones.If anyone picks up the handset, the speakers on all System Speaker Phones are turned off and the personwho picked up the handset is immediately connected to the broadcaster directly.13.20 Conference CallsConnects multiple parties together in a telephone conversation.1. While connected to an outside line, press the FLASH key. (If your telephone is not equipped with aFLASH key then hold down the hook switch in the receiver cradle for approximately half a second.)2. Using the touch-tone keypad, enter the extension number of the station you wish to add to theconversation.3. After the extension answers, press the FLASH key.Conference is now active.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 88 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.If the extension is busy, then the system will turn off the busy signal when you reselect the held line bypressing the FLASH key. If the extension does not answer, then when you select the held line by pressingthe FLASH key, the ringing will stop. Only one outside line can be conferenced at a time. Multiple stationscan be conferenced by repeating steps 1-3.13.21 Call ForwardingRedirects calls to another station’s extension. This will affect both primary and secondary extensions.Enable Call Forwarding1. Go off hook and listen for dial tone.2. Press 07.3. Using the touch tone keypad, enter the 8XX extension number of the station you want your callsforwarded to, or enter the 9XX extension number of the station you want your calls forwarded to.The telephone will beep once in the earpiece to notify you that Call Forwarding is enabled. Forexample, if you are extension 905 and you want your calls forwarded to station 13, enter 913.Disable Call Forwarding1. Go off hook and listen for dial tone.2. Press 007.3. Press 8 for 8XX extension forward disable, or 9 for 9XX extension forward disable.The telephone will beep twice in the earpiece to notify you that Call Forwarding is disabled.If the extension number is invalid you will hear a busy signal in the earpiece. The Adapter Box will notindicate that you are in the Call Forwarding mode.13.22 Callback/Camp – OnRings back when the busy extension number becomes free.Enable Callback/Camp-On1. While receiving the busy signal in the earpiece, Press 08.The telephone will beep once in the earpiece and the red COM light will blink quickly to notify you thatCallback/Camp-On is enabled.2. Go on hook.The telephone will ring back when the extension becomes free. When you go off hook the extensionwill ring.Disable Callback/Camp-On1. Go off hook.2. Press 08.The telephone will beep twice in the earpiece and the red COM light will stop blinking to notify you thatCallback/Camp-On is disabled.Selecting the COM line also cancels Callback/Camp-On.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 89 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.Note: only one extension can be camped-on at one time.13.23 Do Not Disturb (DND)Turns off all rings at a particular station. This will affect both primary and secondary extensions.Enable Do Not Disturb1. Go off hook and listen for dial tone.2. Press 09.The telephone will beep once in the earpiece to notify you that DND is enabled.3. Go on hook.Disable Do Not Disturb1. Go off hook and listen for dial tone.2. Press 009.The telephone will beep twice in the earpiece to notify you that DND is disabled.The Adapter Box will not indicate that you are in DND mode.13.24 Voice Mail ModeDirects unanswered extension calls to the optional Voice Mail System (VMS) instead of ringing alltelephones. This will affect both primary and secondary extensions.Flash Time AdjustEnable VMS Mode1. Go off hook and listen for dial tone.2. Press #7.The telephone will beep once to notify you that VMS mode is enabled.Disable VMS Mode1. Go off hook and listen for dial tone.2. Press #7.The telephone will beep twice to notify you that VMS mode is disabled.This feature will transfer all unanswered extension calls to the VMS and dial the appropriate mailbox forthat extension.13.25 Flash Time AdjustAdjusts FLASH timing when using your telephone’s FLASH key (if applicable).1. Go off hook and listen for dial tone.2. Press 006.The telephone will beep once in the earpiece to notify you that a shorter FLASH time has beenprogrammed. The telephone will beep twice in the earpiece to notify you that a longer FLASH time hasbeen programmed. To change the current setting, repeat steps 2-4.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 90 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.3. Go on hook.This feature is used to adjust the length of the FLASH time on your telephone when the VT3921 System isnot responding properly. Due to the manufacturer definition of the FLASH function for their product, theFLASH key on some telephones may not work when used with the Teligent System. FLASH is used toperform certain system features, such as putting calls on hold. The Teligent System comes configuredwith the shorter FLASH time.In rare instances, neither FLASH time setting will help your telephone’s FLASH key to work with thissystem. This means that your particular telephone’s FLASH function is incompatible with the VT3921System. In this case, you can “flash” manually by using your telephone’s hook switch (see the Adapter BoxManual, Rev. 2.10, CIS00142, pages 23-24).13.26 Set Up – Line Ring PreferenceSelects which telephone lines will ring at a particular station.1. Go off hook.2. Press 004.The red line light will blink over Line 1.3. Using the touch-tone keypad, enter the number of rings to delay.The number key corresponds to the number of rings to delay before ringing your telephone on Line 1(see table). After this key is pressed, the red line light over Line 2 will blink.4. Using the touch-tone keypad, enter the number of rings to delay for Line 2.After this key is pressed, the red line light over Line 3 will blink.5. Using the touch-tone keypad, enter the number of rings to delay for Line 3 .After this key is pressed, the set up is complete.NumberKey Ring Delay0Ring immediately22 ring delay44 ring delay66 ring delay9Never ringsRing delay does not affect outside calls when an extension number is dialed, transferred calls, and COMline calls.Ring delay is useful when you want certain telephones to ring before other telephones.13.27 Set Up – Line Select OrderSets up order of available line selection.1. Go off hook.2. Press 005.All red line lights will blink on the Adapter Box.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 91 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.3. Using the touch-tone keypad, enter the line numbers in the order that you want them to be selected.For example, to set the following order: Line 1, Line 3, COM, Line 2 - using the touch tone keypad,enter - 1,3,4,2. Notice that the number 4 represents the COM line.By default the system will select in the following order: Line 1, Line 2, Line 3, COM.This feature is useful when you want certain telephones to select specific lines. For example, in homeinstallations where there is a residential line (Line 1) and a business line (Line 2), the business telephonestation can be set up to select Line 2 first.13.28 Using Faxes And ModemsThe VT3921 System includes fax detect and extension dialing which allows fax and modem featureswithout requiring dedicated lines. The line privacy feature of the system prevents other stations frominterfering with fax and modem data transmissions.All fax machine and modem equipment must be connected to the VT3921 System through an AdapterBox. Installation instructions are included in Section 41.2, Installing the Adapter Box. Multiple faxes andmodems can be installed on the system up to the limit of extensions. When multiple faxes are used, thesystem will transfer automatic or “star” directed fax calls to the fax with the lowest extension number(default fax). If that fax is busy, not functioning, out of paper, or off hook; the system will ring the nexthighest fax extension. For example, if you had 3 fax machines connected to the system set as fax stations9, 11, and 13, then fax station 9 would be the default fax station. When a fax machine is out of paper ornot functioning, the extension will ring twice before rolling over to the next extension. All modemconnections are accessed by extension number.13.28.1 Fax OperationsMake sure that the station number on the Adapter Box is different from all other devices on the system.Set the Device Switches located on the back of the Adapter Box to a fax as shown below.Defining Default Fax StationFax receive priority is determined by the fax station numbers. The lowest fax station is the default faxstation. For example, if you had 3 fax machines connected to the system set as fax stations 9, 11, and13, then fax station 9 would be the default fax station. If fax station 9 is busy and the system receivesanother fax, then fax station 11 will receive the fax. If both fax stations 9 and 11 are busy, then faxstation number 13 will receive the fax. Refer to Installing The Adapter Box - for further information.13.28.2 Receiving A FaxThe VT3921 Series system is optimized for handling faxes. There are several options that can be used forreceiving faxes.Option Allowed Device Type Settings1FAX, AUX3, AUX4 (Station numbers 0-10)2FAX, AUX3, AUX4 (Station numbers 0-10)

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 92 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.3FAX, AUX3, AUX4 (Station numbers 0-10), Telephone, Modem4Telephone5FAX, AUX3, AUX4 (Station numbers 0-10), Telephone, Modem6FAX, AUX3, AUX4 (Station numbers 0-10)Option 1 - AutomaticThe system automatically detects the “CNG tone” or “fax tone” on any of the outside telephone linesand rings the default fax extension number. All other extensions do not ring. If more than one faxmachine is connected and the default fax is busy, the system will automatically “roll-over” to the nextavailable fax.Option 2 - Voice PromptedThe system’s Fax Message instructs the caller to press the “star” (*) key to automatically direct the faxto the fax station.Note: If there is no fax station then the Fax Message does not playOption 3 - Extension DialedThe caller can enter an extension number of an Adapter Box connected to a fax machine after thesystem answers. After the fax machine answers, it will send a “CED” tone and the caller can then startsending the fax. If the caller has a fax machine with an auto-dialer, the same thing can beaccomplished by inserting pauses (generally 3 pauses) after the telephone number, followed by theextension number. If the receiving fax machine is off or out of paper, the extension will ring for 90seconds then hang up on the outside lines and stop ringing the extension. Extension dialed calls do notrollover to the next available fax machine.Extension dialing allows a private fax, other than the default fax, to be accessed by the callerOption 4 - Full Manual Fax Connected to a Telephone ExtensionThis operation requires attaching a fax machine to an Adapter Box with device switch settings that thesystem will not recognize as a fax extension (not FAX, not AUX3, and not AUX4).Generally the fax machine should be set so it does not ever answer automatically. During aconversation, a fax transmission can be initiated by both parties by switching their fax machines online. This option applies to separate instruments (as shown below) or a combination fax/phonemachine tied to an Adapter Box with device switches set to telephone.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 93 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.In-House WireBack ofAdapter Box AC Power WallPlugThree-Way AdapterOption 5 - Manual Transfer to Fax StationDuring a voice call the connection can be transferred to a fax machine. Transfer the call to the faxextension number using the standard transfer procedure then hang up.Option 6 - Dedicated Fax LineThis option causes all calls received on Line 3 to be sent to the default fax. Refer to Dedicated FaxLine in the Operator’s Manual for details.13.28.3 Sending A FaxSending an External FaxTo send a fax over an outside line the procedure is the same as being tied directly to an outside line,except the system will switch to any unused extension unless restricted.To send all your faxes from a particular telephone line, restrict all other lines except the line that youwould like to send faxes from. Refer to the Operator’s Manual to set up Line Restriction.Sending an Internal FaxThe VT3921 System allows you to send a fax to another fax machine connected to the system, withoutaccessing the telephone company lines. This also allows you to fax an image to your fax card equippedcomputer without using telephone company lines.Note: If the COM light is lit, then the COM line is in use. Wait until the COM line is free before attemptingto make an internal fax call.There are two options for dialing internal faxes as shown below:Option 1 - Manual Dialing1. Select the COM line by pressing # 4.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 94 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.2. Using the touch-tone keypad, enter the extension number of the receiving fax.Option 2 - Automatic DialingIf you have a fax that allows you to enter the extension number directly into the fax machine, then dothe following:1. Using the touch tone keypad, enter the following as the telephone number: “#P4PPXPYPZ”#P4 - Selects the COM line.X- The first digit of the extension number.Y- The second digit of the extension number.Z - The third digit of the extension number.P - Pauses.Note: Substitute whatever character your fax machine uses for pauses in place of the “P”s.13.28.4 Modem OperationsSetting Up Modem LinesThe Adapter Box connected to the modem must be configured as described in Installing The Adapter Boxand Installing of Fax and Modem Equipment.To limit the lines that a modem can use, refer to Set Up - Line Select Order and in the Operator’s Manual,Line Restriction.Since the modem is accessed by an extension number, outsiders cannot connect to computers unlessthey are given the modem extension numbers. This simple security keeps computer “hackers” fromdiscovering a modem line.You can keep the computer modem set to auto answer because unless the outside caller enters theextension number of the computer modem, the station will never ring.There is no system tone detect for modems. Modems connections can be initiated at the station orremotely.Station Initiated Modem ConnectionsStation Initiated External ConnectionsThe computer attached to the modem is programmed the same as if it were connected directly to anoutside line.Station Initiated Internal ConnectionsTo connect to another modem on the system, the COM line is used.Note: If the red COM light is lit, then the COM line is in use. Wait until the COM line is free beforeattempting to make an internal modem call.Option 11. Make sure that the other computer with a modem is in the HOST mode.Your modem software package should have a key sequence that needs to be entered in order to setup the other computer as an auto answering HOST.2. In your modem software find the menu where you enter the number to dial.

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 95 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.3. Enter the following in place of the telephone number: #P4PPXPYPZ#P4 - Selects the COM line.X- The first digit of the extension number.Y- The second digit of the extension number.Z - The third digit of the extension number.P - Pauses.Note: In most modem software packages the ”,” (comma) represents a pause. If your modem uses adifferent character for the pause, then substitute that character in place of the commas. You may need toadjust the number of pauses depending on the speed of your computer.OROption 21. If you are using a standard “Hayes Compatible” modem, at the modem software prompt enter thefollowing: ATDT #P4PPXPYPZ#P4 - Selects the COM line.X- The first digit of the extension number.Y- The second digit of the extension number.Z - The third digit of the extension number.P - Pauses.Remote Initiated Modem ConnectionsTo prepare a station for allowing remote access through the modem, the modem and connected computershould be left on and in the HOST mode. The remote initiator needs to program the communicationsoftware to dial the telephone number, three pauses and the extension number of the desired modem.13.29 Adapter Box Feature Flow Chart

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 96 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.1123344**556677899Pick Global HoldRing PageGlobal Ring ConnectRedialDial System-Wide NumbersBroadcast to all System Speaker PhonesEnable Call ForwardingCallback/Camp-OnEnable Do Not Disturb (DND)Tone/Pulse (Toggle)Extension ConnectSet Up - Line Ring PreferenceSet Up - Line Select OrderFlash Time Adjust (Toggle)Disable Call ForwardingDisable Do Not Disturb (DND)

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 97 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.1234#56789Select Line 1Select Line 2Select Line 3Select COM LineDial a Speed Dial NumberStore a Speed Dial NumberVoice Mail Mode (Toggle)Voice Mail Retrieval 8XX ExtensionsVoice Mail Retrieval 9XX Extensions

VTECH ENGINEERING CANADA LIMITEDTITLE VT3921 Internal Product SpecificationMODEL VT3921Reference: Revision: 1.0 Page: 98 of 98This document is proprietary to VTECH ENGINEERING CANADA LTD. 63187Specifications are preliminary and are subject to change without notice.