Grandstream Networks DP750 DECT Cordless VoIP Phone User Manual

Grandstream Networks, Inc. DECT Cordless VoIP Phone

Contents

User Manual

                 Grandstream Networks, Inc. DP750/DP720 User Guide
 P a g e | 1  DP750/DP720 User Guide  COPYRIGHT ©2016 Grandstream Networks, Inc. http://www.grandstream.com All  rights  reserved.  Information  in  this  document  is  subject  to  change  without  notice.  Reproduction  or transmittal of the entire  or any part,  in any form  or by any means, electronic or  print, for  any purpose without the express written permission of Grandstream Networks, Inc. is not permitted.  The latest electronic version of this user manual is available for download here: http://www.grandstream.com/support Grandstream is a registered trademark and Grandstream logo is trademark of Grandstream Networks, Inc. in the United States, Europe and other countries.                     CAUTION Changes or modifications to this product not expressly approved by Grandstream, or operation of this product in any way other than as detailed by this User Manual, could void your manufacturer warranty.  WARNING Please do not use a different power adaptor with your devices as it may cause damage to the products and void the manufacturer warranty.
 P a g e | 2  DP750/DP720 User Guide   GNU GPL INFORMATION DP750  firmware  contains  third-party  software  licensed  under  the  GNU  General  Public  License  (GPL). Grandstream  uses software under the  specific terms of the GPL. Please see the GNU General  Public License (GPL) for the exact terms and conditions of the license.    Grandstream GNU GPL related source code can be downloaded from Grandstream web site from: http://www.grandstream.com/sites/default/files/Resources/gpl_dp750.tar.gz
 P a g e | 3  DP750/DP720 User Guide  Table of Content DOCUMENT PURPOSE ................................................................................................. 7 CHANGE LOG ................................................................................................................ 8 FIRMWARE VERSION 1.0.0.14 ............................................................................................................ 8 GUI INTERFACE EXAMPLES ........................................................................................ 9 WELCOME ................................................................................................................... 10 PRODUCT OVERVIEW ................................................................................................ 11 Feature Highlights ................................................................................................................................ 11 DP750 Technical Specifications ........................................................................................................... 12 DP720 Technical Specifications ........................................................................................................... 13 GETTING STARTED ..................................................................................................... 15 Equipment Packaging .......................................................................................................................... 15 Connecting DP750 ............................................................................................................................... 16 Connecting via AC power ............................................................................................................. 16 Connecting via PoE ...................................................................................................................... 16 Setting up DP720 handset ................................................................................................................... 17 Battery Information ....................................................................................................................... 17 Setting up the Charger Station ............................................................................................................ 18 DP750 LED Patterns............................................................................................................................ 18 DP720 Handset Description ................................................................................................................ 19 DP720 Icons Description ..................................................................................................................... 20 DP720 Handset Menu.......................................................................................................................... 22 BASIC OPERATIONS ................................................................................................... 25 Turning the Handset ON / OFF ............................................................................................................ 25 Register DP720 Handset to DP750 Base Station ............................................................................... 25 Unregister the DP720 .......................................................................................................................... 26 Checking DP750 Base Station IP Address .......................................................................................... 27 Setting the Key Lock ............................................................................................................................ 27 Locating a DP720 Handset from DP750 Base station ......................................................................... 28 Locate Via DP750 Web UI ............................................................................................................ 28 Locate Via DP750 Base Station ................................................................................................... 29 Understanding DP720/750 Voice Prompt ............................................................................................ 29 Checking System Status ...................................................................................................................... 31 Basic Network Settings ........................................................................................................................ 31 Register a SIP Account ........................................................................................................................ 32 Register Account via Web User Interface ..................................................................................... 32
 P a g e | 4  DP750/DP720 User Guide  Return to Idle Screen ........................................................................................................................... 35 PHONE SETTINGS....................................................................................................... 36 Editing the Handset’s name ................................................................................................................. 36 Changing the Base PIN ....................................................................................................................... 36 Selecting the Menu Language ............................................................................................................. 37 Activate/Deactivate Hands-Free Mode ................................................................................................ 38 Muting the Microphone ........................................................................................................................ 38 Adjusting Speaker and Earpiece Volume ............................................................................................ 38 Ringtones ............................................................................................................................................. 39 Setting the Ringer Volume on the Handset .................................................................................. 39 Setting the Ringer Melody on the Handset ................................................................................... 39 Advisory Tones ............................................................................................................................. 40 Date and Time ...................................................................................................................................... 41 Factory Functions ................................................................................................................................ 42 Firmware Upgrade ............................................................................................................................... 43 Reset the Handset DP720 ................................................................................................................... 43 CALL OPERATIONS .................................................................................................... 45 Placing calls ......................................................................................................................................... 45 Internal calls .................................................................................................................................. 45 External Calls ................................................................................................................................ 45 Dialing from Call history ....................................................................................................................... 46 Answering Calls ................................................................................................................................... 46 Auto Answer ......................................................................................................................................... 47 Direct IP Call ........................................................................................................................................ 47 Call Hold/Resume ................................................................................................................................ 48 Call waiting ........................................................................................................................................... 48 Do Not Disturb ..................................................................................................................................... 49 Call forward .......................................................................................................................................... 49 Call transfer .......................................................................................................................................... 50 Blind transfer ................................................................................................................................. 50 Attended Transfer ......................................................................................................................... 50 Speed Dial ........................................................................................................................................... 50 3-Way Conference ............................................................................................................................... 51 Voice Mail ............................................................................................................................................. 51 Set Voice mail feature code .......................................................................................................... 51 Play voice mail messages ............................................................................................................ 51 Call Features ........................................................................................................................................ 52 RESTORE FACTORY DEFAULT SETTINGS ............................................................... 54 EXPERIENCING DP750/DP720 ................................................................................... 55
 P a g e | 5  DP750/DP720 User Guide   Table of Tables   Table 1: DP720 Features in a Glance ......................................................................................................... 11 Table 2: DP750 Features in a Glance ......................................................................................................... 11 Table 3: DP750 Technical Specifications .................................................................................................... 12 Table 4: DP750 Technical Specifications .................................................................................................... 13 Table 5: Equipment Packaging ................................................................................................................... 15 Table 6: DP750 Led Patterns ...................................................................................................................... 18 Table 7: Handset Keys Description ............................................................................................................. 19 Table 8: DP720 Icons Descriptions ............................................................................................................. 20 Table 9: Voice Prompt Menu ....................................................................................................................... 29 Table 10: DP720 Info description ................................................................................................................ 31 Table 11: Call Features ............................................................................................................................... 52
 P a g e | 6  DP750/DP720 User Guide  Table of Figures  Figure 1: DP720 Package Contents ........................................................................................................... 15 Figure 2: DP750 Package Contents ........................................................................................................... 15 Figure 3: DP750 Back View ........................................................................................................................ 16 Figure 4: Connecting the Base station ........................................................................................................ 16 Figure 5: Setting up the DP720 ................................................................................................................... 17 Figure 6: Setting up the charger station ...................................................................................................... 18 Figure 7: Handset Keys Description ........................................................................................................... 19 Figure 8: DP720 Menu Structure ................................................................................................................ 22 Figure 9: DECT Status ................................................................................................................................ 25 Figure 10: Registration process .................................................................................................................. 26 Figure 11 : Locate Handset via Web UI ...................................................................................................... 28 Figure 12 : Network Settings configuration ................................................................................................. 32 Figure 13: SIP Settings ............................................................................................................................... 33 Figure 14: SIP Accounts Settings................................................................................................................ 34 Figure 15 : SIP Accounts Status ................................................................................................................. 34 Figure 16: Handset Name editing ............................................................................................................... 36 Figure 17: Changing Admin Base PIN Code............................................................................................... 37 Figure 18: Handset Language .................................................................................................................... 38 Figure 19: Ringer Volume ........................................................................................................................... 39 Figure 20: Internal/External Calls Ringtones .............................................................................................. 40 Figure 21: Advisory Tone ............................................................................................................................. 41 Figure 22: Date and Time Settings ............................................................................................................. 41 Figure 23: Factory Functions ...................................................................................................................... 42 Figure 24: Firmware Upgrade ..................................................................................................................... 43 Figure 25: Factory Reset ............................................................................................................................. 44
 P a g e | 7  DP750/DP720 User Guide  DOCUMENT PURPOSE  This document describes the basic concept and tasks necessary to use and configure your DP720 via the LCD menu and also using the DP750 base station. And it covers the topic of phone installation, making basic calls and connecting phone to devices.Please visit http://www.grandstream.com/support to download the latest “DP750/DP720 User Guide”.   This guide covers following topics:   Product Overview  Getting Started  Basic Operations  Phone settings  Call Operations
 P a g e | 8  DP750/DP720 User Guide  CHANGE LOG  This section documents significant changes from previous versions of user guide for DP750/DP720. Only major new features or major document updates are listed here. Minor updates for corrections or editing are not documented here.  FIRMWARE VERSION 1.0.0.14   This is the initial version for DP750/DP720.
 P a g e | 9  DP750/DP720 User Guide  GUI INTERFACE EXAMPLES http://www.grandstream.com/sites/default/files/Resources/dp750_web_gui.zip  1. Screenshot of Login Page 2. Screenshots of Status Pages 3. Screenshots of Profiles Pages 4. Screenshots of DECT Pages 5. Screenshots of Phonebook Pages 6. Screenshots of Settings Pages 7. Screenshots of Maintenance Pages
 P a g e | 10  DP750/DP720 User Guide  WELCOME Thank  you  for  purchasing  Grandstream  DP720 DECT  IP Phone,  the  DP720  is  the  next  generation  of versatile,  affordable,  high  quality  and  easy-to-use,  high  quality  DECT  cordless  IP  phones  for  small BUSINESS and  residential  users.  These  compact  and  durable  DECT  IP  phones  allow  users  mobility throughout their home or office while maintaining the benefits of VoIP calling with a reliable and convenient wireless  voice  communications.  Moreover,  it  provides  many  widely  accepted  benefits  of  the  DECT standard,  including  compact  size,  superb  HD  audio  quality,  rich  feature  set,  market  leading price-performance and wide range radio coverage which allow users to enjoy the benefits of mobility for a minimum investment
 P a g e | 11  DP750/DP720 User Guide  PRODUCT OVERVIEW FeatureHighlights  The following tables contains the major features of the DP720 / DP750                            Table 1:DP720 Features in a Glance            Table 2: DP750 Features in a Glance          DP720     DECT Cordless HD.   1.8 inch (128x160) TFT color LCD.   250 hours standby /20 hours talk time.   27 languages embedded.   10 accounts.   10 lines.   5 Type of ring modes.  DP750     5 handsets.   10 accounts.  10 Lines.  4 Concurrent calls.   PoE power support.   300m range outdoor / 50m range indoor.
 P a g e | 12  DP750/DP720 User Guide  DP750 Technical Specifications The following table resume all the technical specifications including the protocols / standards supported, voice  codecs,  telephony  features,  languages  and  Upgrade/  Provisioning  settings  for  the  Base  station DP750.  Table 3: DP750 Technical Specifications Air Interface Telephony standards: DECT Frequency bands:  1880 – 1900 MHz (Europe), 1920 – 1930 MHz (US),  1910 – 1920 MHz (Brazil), 1786 – 1792 MHz (Korea),  1893 – 1906 MHz (Japan), 1880 – 1895 MHz (Taiwan) Number of channels: 10 (Europe), 5 (US, Brazil or Japan), 3 (Korea) or 8 (Taiwan)   Range: up to 300 meters outdoor and 50 meters indoor Peripherals 5 LED indicators: Power, Network, Register, Call, DECT Reset button, Pairing/Paging button One 10/100 Mbps auto-sensing Ethernet port with integrated PoE Protocol/Standards SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS (A record, SRV,  NAPTR),  DHCP,  PPPoE,  SSH,  TFTP,  NTP,  STUN,  SIMPLE,  LLDP-MED,  LDAP, TR-069, 802.1x, TLS, SRTP, IPv6 (pending) Voice Codecs G.711µ/a-law, G.723.1, G.729A/B, G.726-32, iLBC, G.722, OPUS, G.722.2/AMR-WB (special order), in-band and out-of-band DTMF (in audio, RFC2833, SIP INFO), VAD, CNG, PLC, AJB Telephony Features Hold, transfer, forward, 3-way conference, call park, call pickup,  downloadable phonebook (XML,  LDAP,  up  to  3000  entries),  call  waiting,  call  log  (up  to  300  records),  auto  answer, click-to-dial, flexible dial plan, music on hold, server redundancy and fail-over Voice Codec G.711µ/a-law, G.723.1, G.729A/B, G.726-32, iLBC, G.722, Opus, G.722.2/AMR-WB (special order), in-band and out-of-band DTMF (in audio, RFC2833, SIP INFO), VAD, CNG, PLC, AJB Sample Applications Weather, Currency (pending) QoS Layer 2 QoS (802.1Q, 802.1P) and Layer 3 QoS (ToS, DiffServ, MPLS) Security User  and  administrator  level  access  control,  MD5  and  MD5-sess  based  authentication, 256-bit AES encrypted configuration file, TLS, SRTP, HTTPS, 802.1x media access control, DECT authentication & encryption Multi-language Arabic,  Chinese  Simple,  Chinese  Tradition,  Croatian,  Czech,  Danish,  Dutch,  English, Estonian, Finnish, French, German, Greek, Hebrew, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Romanian, Russian, Slovenian, Spanish, Swedish, Turkish Upgrade/ Provisioning Firmware  upgrade  via  TFTP/HTTP/HTTPS,  mass  provisioning  using  TR-069  or  AES encrypted XML configuration file Multiple SIP Accounts Up to ten (10) distinct SIP accounts per system Each handset may map to any SIP account(s) Each SIP account may map to any handset(s)
 P a g e | 13  DP750/DP720 User Guide  Ring Group Flexible options when multiple handsets share the same SIP account  Circular Mode: all phones  ring  sequentially  from the phone  next to  the one that answered last  Linear Mode: all phones ring sequentially in the predestinated order  Parallel  Mode:  all  phones  ring  concurrently  and  after  one  phone  answers,  the remaining available phones can make new calls  Shared Mode: all phones ring concurrently and always share the same line similar to analog phones Power and Green Energy Efficiency Universal  Power  Supply  Input  AC  100-240V 50-60Hz;  Output  5VDC,  1A;  Micro-USB connection; PoE: IEEE802.3af Class 1, 0.44W–3.84W Package Content Base unit, Universal Power Supply, Ethernet cable, Quick Start Guide Dimensions 28.5 mm (H) x 130 mm (W) x 90 mm (D) Weight Base unit: 143g, Universal Power Supply: 50g; Package: 360g Temperature   and Humidity Operation: -10º to 50ºC (14 to 122ºF); Storage: -20º to 60ºC (-4 to 140ºF);   Humidity: 10% to 90% non-condensing Compliance FCC: Part 15D, 47 CFR 2.1093, Part 15B CE: EN60950; EN301489-1-6; EN301406 RCM: AS/NZS60950 (Pending)  DP720 Technical Specifications The following tables resume all the technical specifications including the protocols / standards supported, voice codecs, telephony features, languages and Upgrade/ Provisioning settings for the DP 720 handset.  Table 4: DP750 Technical Specifications Air Interface Telephony standards: DECT Frequency bands:  1880 – 1900 MHz (Europe), 1920 – 1930 MHz (US),  1910 – 1920 MHz (Brazil), 1786 – 1792 MHz (Korea),  1893 – 1906 MHz (Japan), 1880 – 1895 MHz (Taiwan) Number of channels: 10 (Europe), 5 (US, Brazil or Japan), 3 (Korea), 8 (Taiwan) Range: up to 300 meters outdoor and 50 meters indoor Peripherals 1.8 inch (128x160) color TFT LCD 23 keys including 2 soft keys, 5 navigation/ menu keys, 4 dedicated function keys for SEND, POWER/END, SPEAKERPHONE, MUTE 3-color MWI LED 3.5mm headset jack Removable belt clip Micro-USB port for alternative charging and non-battery operation
 P a g e | 14  DP750/DP720 User Guide  Protocol/Standards DECT, Hearing Aid Compatibility (HAC) compliant Voice Codecs G.722 codec  for  HD  audio  and  G.726  codec  for  narrow band  audio,  AEC,  AGC,  Ambient noise reduction Telephony Features Hold, transfer, forward, 3-way conference, call park, call pickup, downloadable phonebook, call waiting, call log, auto answer, click-to-dial, flexible dial plan, music on hold Sample Applications Weather, Currency (pending) HD Audio Yes, both on Handset and Speakerphone Security DECT authentication & encryption Multi-language Arabic,  Chinese  Simple,  Chinese  Tradition,  Croatian,  Czech,  Danish,  Dutch,  English, Estonian, Finnish, French, German, Greek, Hebrew, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Romanian, Russian, Slovenian, Spanish, Swedish, Turkish Upgrade/ Provisioning Software Upgrade Over-The-Air (SUOTA), handset provisioning Over-The-Air Multiple Line Access Each handset may access up to 10 lines Power and Green Energy Efficiency Universal  Power  Supply  Input  AC  100-240V 50/60Hz;  Output  5VDC,  1A;  Micro-USB connection; Rechargeable 800mAh Ni-MH Low Self-Discharge (LSD) AAA batteries; 250 hours of standby time and 20 hours of talk time Package Content Handset unit, universal power supply, charger cradle, belt clip, 2 batteries, Quick Start Guide Dimensions   (H x W x D) Handset: 155 x 50 x 26 mm, Charger Cradle: 35 x 63.5 x 54 mm Weight Handset: 130g, charger cradle: 71g, universal power supply: 50g; Package: 352g Temperature   and Humidity Operation: -10º to 50ºC (14 to 122ºF); Charging: 0 to 45ºC (32 to 113ºF); Storage:  -20º to 60ºC (-4 to 140ºF);   Humidity: 10% to 90% non-condensing Compliance FCC: Part 15D, 47 CFR 2.1093, Part 15B CE: EN60950; EN301489-1-6; EN301406 RCM: AS/NZS60950 (Pending)
 P a g e | 15  DP750/DP720 User Guide  GETTING STARTED This chapter provides basic installation instructions including the list of the packaging contents and also information  for  obtaining  the  best  performance  with  the  DP720  IP  DECT  phone  and  its  Base  station DP750.   Equipment Packaging Table 5: Equipment Packaging  Figure 1: DP720 Package Contents           Note:Check the package before installation. If you find anything missing, contact your system administrator. DP720 DP750   1 Handset unit   1 Universal power supply 5V   1 Charger cradle   1 Belt clip   2 chargeable batteries  1 Quick Start Guide   1 Base unit   1 Universal power supply 5V   1 Ethernet cable  1 Quick Start Guide   1 GPL Statement Figure 2: DP750 Package Contents
 P a g e | 16  DP750/DP720 User Guide  Connecting DP750 To setup the DP750 Base Station, please follow the steps below:  Figure 3: DP750 Back View    You have two options for power and network connection of the base station: AC power or Power over Ethernet (PoE)  Connecting via AC power 1.  Connect the microUSB connector into the related port on the base station and connect the other end of the power adapter into an electrical power outlet. 2.  Connect the supplied Ethernet cable between the Internet port on the base station and the Internet port in your network or the switch/hub device port.                Connecting via PoE To connect the base station using the pose, you need to connect the Ethernet cable provided (or 3rd party network cable) between the Network Socket on the base station to Ethernet port of the POE switch/hub. Figure 4: Connecting the Base station
 P a g e | 17  DP750/DP720 User Guide  Setting up DP720handset     Please follow the above steps to insert batteries into the handset:   1. Open the battery compartment cover.   2. Insert the batteries in the correct polarity. 3. Close the battery compartment cover.  Please charge the batteries fully before using the handset for the first time  Figure 5: Setting up the DP720 BatteryInformation  Technology: Nickel Metal Hydride (Ni-MH)    Size: AAA    Voltage: 1.2V    Capacity: 800mAh  Charging time: 12 hours from empty to full  Standby time: up to 250 hours  Talk time: up to 20 hours active talk time    In  order  to  get  the  best  performance  of  your  DP720  handset,  we  recommend  using  original  batteries provided in the package or batteries compliant with above specifications. Above specifications may differ depending on the age and capacity of the batteries used.  Important  Note:  Be  careful  when  setting  up  the  batteries  into  your  handset  to  avoid  any  risk  of short-circuits that can lead to damage your batteries and/or the handset itself. Do not use damaged battery which can increase the risk of serious harm.
 P a g e | 18  DP750/DP720 User Guide  Setting up the Charger Station Please refer to the following steps for setting up the Charger station and charging the handset:  1.  Connect the DC plug on the power adapter to the microUSB connector on the charge station. 2.  Connect the other end of the power adapter into an electrical power outlet. 3.  After setting up the handset and charger station, place the handset in the charger station.             Figure 6: Setting up the charger station DP750 LED Patterns The DP750 has 5 LED lights on it. Please see on the following table the meaning of each light.     Table 6: DP750 Led Patterns  LED Light Status  Indicates Power ON/OFF  Indicates Access to the Network. Remains ON while there is Access to the Network  Indicates if a SIP account is registered  Indicates status of the lines. Blinking: A line is in use. Solid ON: All lines are free.  The  Radio  icon  for  pairing  the  DP720  and  DP750,  if  we  keep  pressing  the  Radio button it starts blinking indicating pairing attempt.
 P a g e | 19  DP750/DP720 User Guide  DP720 Handset Description The LCD screen and the Keypad are the main hardware components of the DP720.    Figure 7: Handset Keys Description  Table 7: Handset Keys Description  Key Description 1. Power and charging indication   Red: In charge / Green: Charge completed. 2. Earphone Correspond to Audio output 3,5 Left and Right softkey Correspond  to  functions  displayed  on  the  LCD.  These  functions change depending on the current context. 4. LCD Display Shows call information, handset status icons, prompt messages and etc. 6. 4 Arrow key combination Permits navigation of the cursor through the displayed menu options 7. Ok / Selection key Selects the option chosen by the cursor. (Enters the main menu from the home screen. 8. Off-hook or dial key Power Key: Turn on / Off the handset - On-hook: Terminate calls. 9. On-hook or Power key Off-hook key and Dial key to make outgoing calls 10. Alphanumeric Keypad Provides the digits, letters, and special characters in context-sensitive
 P a g e | 20  DP750/DP720 User Guide  applications. 11. Hands free/Speaker key Switch to hands free or Speaker mode. 12. Mute key Activate / Deactivate the Mute feature. 13. Microphone Picks up audio during earpiece and hands-free calls.  DP720 Icons Description The following table contains the description of each icon will be displayed on the screen of your DP720.   Table 8:DP720 Icons Descriptions  Alarm Alarm icon. The icon shows when set alarm.  Battery status Not equipped with battery  Battery status Battery empty  Battery status Battery low  Battery status Battery normal  Battery status Battery full  Battery status Charging  Signal status Not subscribed  Signal status Not in range  Signal status Signal very low  Signal status Signal low  Signal status Signal normal  Signal status
 P a g e | 21  DP750/DP720 User Guide                                          Signal good  Signal status Signal very good  Microphone MUTE Status OFF - Not muted ON – Muted  Speaker Status OFF - Speaker is inactivated ON - Speaker is activated  Ringtone Status OFF - Ringtone off (Silent mode) ON - Ringtone on  Keypad Lock Status OFF - Keypad unlock ON - Keypad locked  External Incoming Call  External Outgoing Call  Internal Incoming Call  Internal Outgoing Call  Missed Call Icon  Incoming Call Icon  Outgoing Call Icon  Contacts  Call History  Voice Mail  Settings  Call Settings  Tools
 P a g e | 22  DP750/DP720 User Guide  DP720 Handset Menu The handset has an easy-to-use menu structure. Every menu opens a list of options. To open the main menu, press the Left display key (Menu) when the handset is ON and in standby mode. Press the 4 key combinations to scroll to the menu option you require. Then press the soft key Select or the Selection Key Ok to access further options or confirm the setting displayed. To go to the previous menu item, press Back. You can press the Power key at any time to cancel and return to standby mode. If you do not press any key, the handset automatically reverts to standby mode after 20 seconds.                                Figure 8: DP720 Menu Structure Contacts  Call History       Voice Mail      Settings   Call Settings     Tools            Missed Calls Accepted Calls Outgoing Calls All calls  Alarm Play Message Set Voice Mail Do Not Disturb Call Waiting Call Forward Speed Dial Outgoing Default Line Auto Answer Line Status Registration Handset Name Phone Language Date / Time Audio Display Network Settings Sip Settings System Settings Firmware Upgrade Factory Functions Info Time Date Register Deregister Select Base  Advisory Tone Ringtones Volume Diagnostic Mode Audio Loopback LCD ON /OFF LCD Diagnostic Model Firmware Hardware IPEI DECT Region IP Address Subnet Mask Gateway MAC Address  Change Base PIN Factory Reset Private Shared  Backlight Timeout IP Settings
 P a g e | 23  DP750/DP720 User Guide  Contacts Private:  Private  contacts  are  the  contacts  that  only  visible  for  the  current handset. You can add, edit, delete, and call all the contacts in private contacts. Shared:  Shared  contacts  are  the  contacts  that  shared  for  the  handset subscribed on the DP750 base station. You can add, edit, delete, edit call all the contacts in shared contacts as well. Call History Display the call history; include Missed Calls, Accepted Calls, Outgoing Calls and All calls. You can add contacts to Shared Contacts directly from call logs.   Voice Mail Voice Mail sub menu includes the following options:  Play Message: Play the voice mail messages received.  Set Voice Mail: Configure the voice mail parameters. Settings Settings sub menu includes the following options:  Registration To register and unregister your handset and also search the base station.  Handset Name Changing the handset’s name.    Sounds o Ring Tone Configures different ring tones for incoming call. o Ring Volume Adjusts ring volume by pressing left/right arrow key.  Language and Input Selects the language to be displayed on the phone's LCD. By default, it is English.  Date Time It is used to configure date and time on the Handset.  Audio Specifies the ringtones for the internal / external and also the volume and the advisory tones (Keypad, Confirmation, Low battery).  Display Configure the backlight timeout.  Network Settings Configure  the IP  addresses  and selecting  the  IP  mode  DHCP/Static  as well.  Sip Settings Configuring the Sip accounts  System settings Changing the code PIN Factory reset
 P a g e | 24  DP750/DP720 User Guide   Firmware Upgrade Upgrading the firmware version of the handset  Factory Functions -  Diagnostic Mode All LEDs will light up. All keys’ name will display in red on LCD screen  before  diagnosing.  Press  any  key  on  the  keypad  to diagnose the key’s function. When done, the key’s name will display in  blue on  LCD with a prompt message (PASS). To exit press Back (right soft key). -  Audio Loopback Speak  to  the  phone  using  speaker/handset/headset.  If  you can hear your voice, your audio is working fine. Press “Exit” soft key to exit audio loopback mode. -  LCD ON / OFF Selects this option to turn off LCD. Press any button to turn on LCD.   -  LCD Diagnostic Enters this option and press Left/Right Navigation key to do LCD Diagnostic. Press right soft key to quite.    Info Display the handset status (Firmware, Model, Hardware, IPEI …) Call Settings Call settings sub menu includes the following options:  Do Not Disturb Enables/disables Do Not Disturb on the phone.  Call Waiting   Configure the call waiting function.  Call Forward Configure the call forward function.  Speed Dial Assign the numbers for speed dial.  Outgoing Default Line Select the outgoing default line.  Auto Answer Enable / Disable the Auto answer functionality.  Line Status Display the line status.
 P a g e | 25  DP750/DP720 User Guide  BASIC OPERATIONS Turning the Handset ON / OFF To turn ON the handset -  Long press on the power key          until the LCD screen lights up.    To turn OFFthe handset -  Long press on the power key          again when the handset is idle until the display turns off.  Register DP720Handset to DP750 Base Station 1.  On DP750 Base station, press and hold the Radio/Page button for 7 seconds until the Radio icon starts blinking to start Subscription process. Or Access web UI, go to Status >DECT Status and press Subscribe button to Open Subscription.                 2.  On DP720, Press Menu (left soft key        or the selection key      ) to bring up operation menu.   3.  Press Arrow keys to move the cursor to Settings and then press Select. 4.  Navigate to Registration, then press Select (left soft key).     Figure 9: DECT Status
 P a g e | 26  DP750/DP720 User Guide  5.  Navigate to Register, then press Select while the DP750 Radio icon is blinking. 6.  Select BaseX (X=1-4) corresponding to the desired base station DP750, then press Subscribe. 7.  DP720 will search for nearby base stations and displays the RFPI code of the discovered DP750. 8.  Press Subscribe to pair with the displayed DP750.   9.  The DP720 will display Easy Pairing on the LCD and play an audible buzz when successful. Then it  will  return  to  the  home  screen,  displaying  the  handset  name  and  number  assigned  by  the registered base station.                 Unregister the DP720 1.  Press Menuon the DP720 to bring up operation menu. 2.  Press Arrow keys to move the cursor to Settings. 3.  Navigate to Registration, and then press Select. 4.  Navigate to Deregister. 5.  Select the Handset to be unregistered and press the left soft key Deregister. 6.  Enter the system PIN (default: 0000).   7.  Press the Done soft key to confirm or back to cancel. Figure 10: Registration process
 P a g e | 27  DP750/DP720 User Guide  Checking DP750 Base Station IP Address DP750 is by default configured to obtain IP address from DHCP server where the unit is located. In order to know which IP address is assigned to your DP750, please follow below steps using a paired DP720 handset with your DP750 base station.Please see Register DP720 Handset to DP750 Base Station 1.  Press Menu left soft key          or OK button        on DP720 to bring the main menu. 2.  Use Navigation keys to reach          Settings menu     3.  Browse sub-menus until reaching Info sub-menu.       4.  Press Select key using left soft key                           5. Info page will be displayed, browse the screen to find IP Address, Subnet Mask and Default Gateway information for your DP750.       Setting the Key Lock You can lock the keypad against unintentional entries. It is, however, still possible to pick up incoming calls even with the keypad locked.   To enable the Keypad Lock 1.  Press the pound key“#”          and hold for approximately 2 seconds.   2.  The display shows Keypad Locked briefly and the key lock iconappears in the display.
 P a g e | 28  DP750/DP720 User Guide    To disable the Keypad Lock 1.  Press and hold pound key” # “to unlock the keys. 2.  Keypad Unlocked appears briefly in the display and a windows prompt will be displayed to confirm that the keypad is unlocked. Locating a DP720 Handset from DP750 Base station In some situations, you may have a DP720 handset incorrectly positioned and you don’t know its current location. You can locate a DP720 handset from his registered DP750 base station using below steps: Locate Via DP750 Web UI 1.  Access your DP750 base station web UI by entering its IP address in your favorite browser. 2.  Enter your admin password (default: admin) 3.  Press Login to access your settings. 4.  Go to Status >DECT Status tab 5.  Choose which handset to locate and press its corresponding Page button. 6.  A paging call will be received on the selected DP720 handset. If you press Page All, all registered DP720 handsets will be receiving paging call. 7.  Once located, you can press any key on the handset or press Page or Page All to end paging call.                 Figure 11 : Locate Handset via Web UI
 P a g e | 29  DP750/DP720 User Guide  Locate Via DP750 Base Station 1.  On DP750 Base station back side, press Radio/Page button                       2.  All registered handsets will receive Paging call. 3.  Once located, you can end the paging calling by pressing any key on the handsets or by pressing again Radio/Page button  Understanding DP720/750 Voice Prompt DP720 Base Station has a built-in voice prompt menu for simple device configuration. The IVR menu work with any Handset registered to the base. Pick up the handset and dial “***” to use the IVR menu. Table 9: Voice Prompt Menu  Menu Voice Prompt Options Main Menu “Enter a Menu Option” Press “*” for the next menu option Press “#” to return to the main menu Enter 01-05, 07,10, 13-17,47 or   99    menu options   01 “DHCP Mode”, “Static IP Mode” Press “9” to toggle the selection If  using  “Static  IP  Mode”,  configure  the  IP  address information using menus 02 to 05.   If using “Dynamic IP Mode”, all IP address information comes  from  the  DHCP  server  automatically  after reboot. 02 “IP Address “ + IP address The current WAN IP address is announced If  using  “Static  IP  Mode”,  enter  12  digit  new  IP address. You need to reboot the DP750 for the new IP address to take Effect. 03 “Subnet “ + IP address Same as menu 02 04 “Gateway “ + IP address Same as menu 02 05 “DNS Server “ + IP address Same as menu 02
 P a g e | 30  DP750/DP720 User Guide  07   Preferred Vocoder Press “9” to move to the next selection in the list:   PCM U / PCM A   iLBC   G-726   G-723     G-729       10 “MAC Address” Announces the Mac address of the unit. 13 Firmware Server IP Address Announces  current  Firmware  Server  IP  address.   Enter 12 digit new IP address. 14 Configuration Server IP Address Announces  current  Config  Server  Path  IP  address.   Enter 12 digit new IP address. 15 Upgrade Protocol Upgrade  protocol  for  firmware  and  configuration update.  Press  “9”  to  toggle  between  TFTP /  HTTP / HTTPS 16 Firmware Version Firmware version information. 17 Firmware Upgrade Firmware  upgrade  mode.  Press  “9”  to  toggle  among the following three options:                     - always check                     - check when pre/suffix changes                     - never upgrade 47 “Direct IP Calling” Enter the target IP address to make a direct IP call, after dial tone.    (See “Make a Direct IP Call”.) 86 Voice Mail Number of Voice Mails  99 “RESET” Press “9” to reboot the device Enter MAC address to restore factory default setting (See Restore Factory Default Setting section)  “Invalid Entry” Automatically returns to main menu  “Device not registered” This prompt will be played immediately after off hook If the device is not register and the option “Outgoing Call without Registration” is in NO Five Success Tips when using the Voice Prompt  “*” shifts down to the next menu option and “#” returns to the main menu  “9” functions as the ENTER key in many cases to confirm or toggle an option   All entered digit sequences have known lengths  - 2 digits for menu option and 12 digits for IP address. For IP address, add 0 before the digits if the digits are less than 3 (i.e.  - 192.168.0.26 should be key in like 192168000026.    No decimal is needed).     Key entry cannot be deleted but the phone may prompt error once it is detected.
 P a g e | 31  DP750/DP720 User Guide  Checking System Status You can view the system status on your handset including the following information of the system:  Table 10: DP720 Info description Item Description Model Displays the handset model. DP720 Firmware Displays the current firmware version installed on DP720. i.e.: 1.0.0.14 Hardware Displays the hardware version of DP720. i.e.: 1.4A IPEI International Portable Equipment Identifier. Unique “serial number” for DECT handsets. DECT Region Displays region of DECT. i.e. EU or US IP Address Displays IP address of the base station DP750 if registered. Subnet Mask Displays Subnet Mask of the base station DP750 if registered. Gateway Displays Gateway IP of the base station DP750 if registered. MAC address Displays MAC address of the base station DP750 if registered.  To check the handset status:   1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  Use Navigation keys to reach          Settings menu     3.  Browse sub-menus until reaching Info sub-menu and press Select. Basic Network Settings Once connected to the network the base station attempts to contact a DHCP server to obtain valid network settings (e.g., IP address, subnet mask, gateway address and DNS address) by default. The users could also configure basic network settings manually. In order to configure the network settings manually, please follow the steps bellow: 1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  Use Navigation keys to reach          Settings menu 3.  Navigate to select NetworkSettings. 4.  Enter the system PIN (default: 0000) and press the soft key Save (Left arrow key),   5.  To change to static IP, pressorto select Static from the IP Settings field. 6.  Enter valid values in the IP Address, Subnet Mask, Gateway, DNS Server fields.
 P a g e | 32  DP750/DP720 User Guide  7.  Press the Save soft key (        ) tosave and apply the new changes.   A  message prompt  message  will  be  displayed  to  confirm  that  the  new  settings  are  saved successfully.                    Register a SIP Account DP750 supports up to 10 SIP accounts, 5 handsets. Each Handset can be configured up to 10 accounts. Please be aware that his line settings will be affected by DID settings (hunting group settings) in “DECT Account Settings”. Register Account via Web User Interface 1.  Access your DP750 base station web UI by entering its IP address in your favorite browser. 2.  Enter your admin password (default: admin) 3.  Press Login to access your settings. 4.  Go to Profiles tab and select a profile to use. DP750  supports  up  to  4  profiles.  A  profile  is  a  set  of  settings  including  general  settings,  network settings, SIP setting, audio setting, call settings and ring tones, and etc. A profile can be used with different SIP accounts. 5. In General Settings, set the following: Figure 12 : Network Settings configuration
 P a g e | 33  DP750/DP720 User Guide  a. Profile Active to Yes b. SIP Server field with your SIP server IP address or FQDN. c. Failover SIP Server with your Failover SIP Server IP address or FQDN. Leave empty if not available.   d. Prefer Primary SIP Server to No or Yes depending on your configuration. Set to No if no Failover SIP Server is defined. If Yes, account will register to Primary SIP Server when failover registration expires. e. Outbound Proxy with your Outbound Proxy IP Address or FQDN. Leave empty if not available. For more information, related to above options please refer to Technical Information table. 6.  Press Save and Apply to save your configuration.               7.  Go to DECT >SIP Account Settings 8.  Configure your SIP details in desired account: a. Account: Select Account row to configure (Account 1 – Account 10) b. SIP User ID: User account information, provided by VoIP service provider (ITSP). Usually in the form of digit similar to phone number or actually a phone number. c. Authenticate ID: SIP service subscriber’s Authenticate ID used for authentication. Can be identical to or different from SIP User ID. d. Password: SIP service subscriber’s account password to register to SIP server of ITSP. For security reasons, the password will field will be shown as empty. e. Name: Any name to identify this specific user. f. Profile: Select the corresponding Profile ID (1/2/3/4) g. HS Mode: Assign the account to specific handset (HS1, HS2, HS3, HS4 or HS5) or hunting group mode Figure 13: SIP Settings
 P a g e | 34  DP750/DP720 User Guide  h. Active: Set to Yes. If set to No, account is disabled and will not register. 9.  Press Save and Apply to save your configuration.                 After applying your configuration, your phone will register to your SIP Server.   You can verify if your DECT phone has registered with your SIP server from your DP750 web interface under  Status  >Account  Status  (a  green  background  with  Yes  under  SIP  Registration  column forcorresponding account indicates the account has been successfully registered).                 Figure 14: SIP Accounts Settings Figure 15 : SIP Accounts Status
 P a g e | 35  DP750/DP720 User Guide  Return to Idle Screen Press the power key          to quickly exit the menu and return back to the main idle screen.   If you do not press any key in a period of time, the LCD screen will automatically exit the menu and return to the idle screen as well.   When you are navigating on the handset’s menu, and you receive an incoming call, the LCD screen will automatically exit the menu and you can either accept or reject the call, when the call is terminated, the LCD screen will return back to the idle screen.
 P a g e | 36  DP750/DP720 User Guide  PHONE SETTINGS This chapter will help you with the instruction for configuring and changing the settings of your DP720,   Editing the Handset’s name The procedure for changing the name of your handset shown in the display in standby mode is as follows: 1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  Use Navigation keys to reach          Settings menu 3.  Navigate to select Handset Name, and then press Select (left soft key).     4.  Enter  the  desired  name  and  press  Rename(left  soft  key)  and  then  the  DP720  will  display  a confirmation message that the rename operation was successful.        Changing the Base PIN Users can change their code PIN by following the steps bellow: 1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  Use Navigation keys to reach          Settings menu 3.  Navigate to select System Settings, and then press Select (left soft key).     4.  Enter the current code PIN (By Default is 0000), a new window will be displayed inviting you to enter the new password, when done press Save(left soft key     )and a prompt message will be displayed to confirm that the new Code PIN has been saved successfully.   Figure 16: Handset Name editing
 P a g e | 37  DP750/DP720 User Guide                        Selecting the Menu Language The DP720 supports displaying texts in different languages. The handset supports 27 languages (see the table of the technical specifications). The default language of the handset is English. You can change the language  according  to  your  requirement.  To  change  the  language  of  the  handset,  please  proceed  as follows: 1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  Use Navigation keys to reach          Settings menu 3.  Navigate  to  select  Phone  language,  then  select  the  desired  language  and  press  the Select(Leftsoft key        ). The  LCD  screen  prompts  “Change  phone  language  to  xxx  (xxx  it’  the language you selected)” 4.  Press Yes(Left soft key    ) to accept the change. Text displayed on the handset will change to the selected language.  Figure 17: Changing Admin Base PIN Code
 P a g e | 38  DP750/DP720 User Guide             Activate/Deactivate Hands-Free Mode This function allows you to make a call without having to hold the handset in your hand. 1.  Press the  Hands free  key              while you are  making a  call or  on the  idle screen  to activate hands free mode.   2.  Press the Hands free key    again to deactivate the hands free function.   Muting the Microphone Press the mute key to switch off the microphone during an established call. You can now talk freely without the other party hearing you and the icon of mute will be displayed on the screen. Press the mute keyagain to switch the microphone back on.  Adjusting Speaker and Earpiece Volume Press  left keyor right key      while  you  are  on an  established  call to set  the  volume  of the  Earphone  / Speaker. You can choose between 5 different levels. The default level is 3: Volume 1 Volume 2 Volume 3 Volume 4 Volume 5 Figure 18: Handset Language
 P a g e | 39  DP750/DP720 User Guide  Ringtones Setting the Ringer Volume on the Handset You can adjust the ringer volume for an incoming call (internal or external) to one of 6 levels (level 1 to 5 and off). Level 5 is the highest level. (The DP720 Handset is set to level 3 by default). In order to configure the desired ringer volume, proceed as follows: 1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  Use Navigation keys to reach          Settings menu 3.  Navigate to select Audio -> Volume 4.  Pressthe left and right arrow keys to change repeatedlyand set the desired volume 5.  Press Save (Left soft key        ) to confirm the volume, and a message prompt will be displayed to confirm that the new volume has been successfully saved. If you select OFF, theicon appears in the display and the handset will not ring for incoming calls.         Setting the Ringer Melody on the Handset You can change the ringer melody for an incoming call (internal or external). The device has 8 different ringer melodies for you to choose from (1-8).       The default setting for the ring tone for an external call is melody 1.       The default setting for the ring tone for an internal call is melody 1.  In order to configure the desired melody for either an internal/external call, proceed as follows: 1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   Figure 19: Ringer Volume
 P a g e | 40  DP750/DP720 User Guide  2.  Use Navigation keys to reach          Settings menu 3.  Navigate to select Audio -> Ringtones. And then choose which type of calls (Internal or External calls) you need to change the ringtones. Press Select(left soft key) to confirm the ringtones selected and a message prompt will be  displayed to confirm that the new ringtones has been set successfully.                         Advisory Tones Advisory tones are acoustic signals, which inform you of different actions and states on your handset. The following advisory tones can be configured independently of each other:  Keypad Tone:it’s played when a user presses any key of the keypad.  Confirmation:it’s played when a user saves settings or places the handset in thecharger cradle.  Low Battery:it’s playedif the capacity of the batteries is low or the handset requires charging.  To configure the advisory tones 1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  Use Navigation keys to reach          Settings menu 3.  Navigate to select Audio ->Advisory tones, and choose which tone you want to change it.   Figure 20: Internal/External Calls Ringtones
 P a g e | 41  DP750/DP720 User Guide  4.  Press the left and right arrow keys to either enable or disable the desired tones. 5.  Press Save (Left soft key        ) to confirm, and a message prompt will be displayed to confirm that the new settings has been successfully saved.           Date and Time On the DP720 the Date and time are displayed on the idle screen and it obtains the date and time from the Simple Network Time Protocol (SNTP) server by default. If your handset cannot obtain the date and time from  the SNTP server,  you need  to configure  the date and  time manually.  You can  configure  the time format and date format respectively. The handset supports two time formats (12 Hour or 24 Hour) and three date formats (DD/MM/YYYY; MM/DD/YYYY; YYYY/MM/DD).  To configure date and time manually 1.  Press Menu (left soft key        or the selection key ) to bring up operation menu.   2.  Use Navigation keys to reach          Settings menu 3.  Navigate to Date and time. Edit the current values in the Date& Time fields (you can change the date / time format using the Left/ Right arrow keys) and then press Set (left soft key ). 4.  Press the Save soft key to apply your changes.      Figure 21: Advisory Tone Figure 22: Date and Time Settings
 P a g e | 42  DP750/DP720 User Guide  Factory Functions The factory functions include the following diagnosticoptions: -  LCD Diagnostic -  LCD ON / OFF -  Audio Loopback -  Diagnostic Mode  1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  Use Navigation keys to reach          Settings menu 3.  Navigate to select Factory Functions and choose which diagnostic, you need to perform, and then press Select (left soft key        ).  -  For Diagnostic Mode All LEDs will light up. All keys’ name will display in red on LCD screen before diagnosing. Press any key on the keypad to diagnose the key’s function. When done, the key’s name will display in blue on LCD with a prompt message (PASS).To exit press Back (Right soft key) -  Audio Loopback Speak  to  the  phone  using  speaker/handset/headset.  If  you  can  hear  your  voice,  your audio is working fine. Press Back (left soft key) to exit audio loopback mode. -  LCD ON / OFF Selects this option to turn off LCD. Press any button to turn on LCD.   -  LCD Diagnostic Enters  this  option  and  press  Left/Right  Navigation  key to  do  LCD  Diagnostic  (you  will notice that the color of the LCD will be changing). Pressright soft keyto quite.            Figure 23: Factory Functions
 P a g e | 43  DP750/DP720 User Guide   Firmware Upgrade To upgrade the firmware on your handset, follow the steps bellow:   1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  Use Navigation keys to reach          Settings menu 3.  Navigate to select Firmware Upgrade and press the soft key Select.   4.  The LCD screen will display a prompt message to confirm the firmware downloading / upgrading press the right soft key Back to dismiss the upgrade process.         Reset the Handset DP720 The users can reset the new settings made on the handset. Resetting handset will not overwrite settings of directory, call history, voice mail and the handset registration to the base station. Other customized settings on the handset will be reset to factory settings after performing Factory reset. To reset your handset to the default settings:    1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  Use Navigation keys to reach          Settings menu 3.  Navigate to select Audio ->System Settings and choose Factory Reset. 4.  The LCD screen will displays a prompt message to confirm restoring factory settings, press Yes (left soft key) to  confirm  or  No (right soft key    )  and then the  handset will  reboot to apply the default settings.   Figure 24: Firmware Upgrade
 P a g e | 44  DP750/DP720 User Guide   Figure 25: Factory Reset
 P a g e | 45  DP750/DP720 User Guide  CALL OPERATIONS This chapter will guide you to place internal and external calls, transferring and holding the incoming calls.   Placing calls To place an internal or external calls, you can use the following mode:     Earpiece mode: pressing the off-hook key to dial out.    Speakerphone mode: pressing the speakerphone key to dial out.    Headset mode: connecting a headset. During the call, you can switch the call mode by pressing the corresponding keys or connecting a headset. Internal calls To make phone calls between the handsets registered to the same DP750 Base Station when it is used as a standalone unit, without the use of a SIP server. This feature will also be applicable when the DP750 Base Station is used with Hunting Groups and is registered to SIP server only with one master number.    To make internal calls, follow the next steps:   Method 1: 1.  Press Up arrow key          , to display the intercom list containing all the handsets registered. 2.  Navigate to choose the desired handset and then press Select(left soft key). 3.  To terminate the call, press hang-up key        . Method 2: 1.  In idle screen, enter the 1-digit handset number, for instance 1, or 2, or 3… 2.  Press Intercomsoftkey (using left soft key). 3.  To terminate the call, press hang-up key        . External Calls External calls require  the use  of SIP lines.  So  you should first  assign the  SIP  Account to  the handset beforehand, and then assign the line to the handset. To make external calls, follow the next steps: Method1: 1.  Enter the desired number using the keypad.
 P a g e | 46  DP750/DP720 User Guide  2.  Press the dial key or the speaker key        . If there are multiple lines assigned to your handset as outgoing lines, select the desired  line. If you do not select a line, the handset uses the default outgoing line to dial out.   3.  Press the dial key          or the left soft key Call  .   4.  To terminate the call, press the hang-up key      . Method2: 1.  Press the dial key      or the speaker key          to enter the pre- dialing screen.   2.  Enter the number to dial using the keypad. 3.  Press the dial key          , # (Use # as dial key” must be configured in web configuration) or wait for 4 seconds and the call will be lunched automatically.   4.  To finish the call, press the hang-up key         During the call, you can switch the call mode by pressing the corresponding keys and cancel the dialing operation by pressing the  on-hook key.  During the  call conversations,  you can  press the  left and  right navigation keys to adjust the volume. The call duration is displayed on the LCD screen while the call is in progress and call summary will be displayed once the call is terminated. Dialing from Call history Users may use their call history entries to initiate calls. 1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  Use Navigation keys to reach Call HistoryIcon and then press Select (left soft key        ). 3.  Select  the  desired  entry,  then  press  either  dial  key  or  Options  key>Edit  and  Dial  >Call  to establish the call. The call history list stores the last dialed phone numbers. When the memory of the redial number list is full, the handset will automatically erase the oldest dialed number when a new number is dialed Answering Calls When receiving an incoming call, you can answer the call using following steps: 1.  Press the dial keyto pick up the call or the Accept Soft key (left soft key). 2. To  answer  an  incoming  call  when  you’re  already  in  another  call,  press  the  dial  key        ,  or
 P a g e | 47  DP750/DP720 User Guide  thespeaker key , or the Answersoft key. The incoming call is answered, and the original call is placed on hold. 3.  To terminate the call, press hang-up key        . Note:You can switch off the ringer temporarily by pressing Silent Soft key. Auto Answer To simply answer the incoming calls by picking up the handset from the charger cradle without having to press the off-hook key.   The auto answer feature works only if the handset is placed in the charger cradle.  To activate / deactivate the auto answer feature 1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  Use Navigation keys to  reachCall settings    , and then  press  Select (left  soft key        ) and navigate to Auto Answer using the Up / down keys arrow. 3. Press the left soft key Saveafter Enabling / Disabling the auto answer option. Direct IP Call Direct IP calling allows two parties, that is, a Handset and another VoIP Device, to talk to each other in an ad hoc fashion without a SIP proxy.    Elements necessary to complete a Direct IP Call:   1.  Both DP720 and other VoIP Device, have public IP addresses, or   2.  Both DP720 and other VoIP Device are on the same LAN using private IP addresses, or   3.  Both DP720 and other VoIP Device can be connected through a router using public or private IP addresses (with necessary port forwarding or DMZ).   DP720 supports two ways to make Direct IP Calling: Using IVR 1.  Pick up the handset and press dial key        , then access to the voice menu prompt by dialing*** 2.  Dial 47to access the direct IP Call menu.   3.  Enter the IP address after the voice prompt Direct IP Calling
 P a g e | 48  DP750/DP720 User Guide  Using Star Code 1.  Pick up the handset and press the dial key         2.  Dial *47 followed by the target IP Address.   Note: You can enter directly *47 + target IP address, and then press the dial key to initiate the call.    Examples of direct IP calls a)  If  the  target  IP  address  is  192.168.0.160,  the  dialing  convention  is*47  or  Voice  Prompt  with option 47, then 192*168*0*160, followed by pressing the “#” key if it is configured as a send key or wait 4 seconds. In this case, the default destination port 5060 is used if no port is specified. b)  If the target IP address/port is 192.168.1.20:5062, then the dialing convention would be: *47 or Voice Prompt with option 47, then 192*168*0*160*5062 followed by pressing the “#” key if it is configured as a send key or wait for 4 seconds. Note: To use direct IP call, Use Random Port setting should be set to NO.   Call Hold/Resume During an established call, you can put the call on hold and resume following below steps: 1.  Press the left soft key          to access the call Options and then navigate to Hold. 2.  Press Select, left soft key          to put the call on hold. 3.  To resume the call, access the options menu again and navigate to Resume, then press Select.   If you press          during the call, the first call will be on hold, and you can establish a new call; to resume the initial call, press           Call waiting This feature will notify you of a new incoming call during an established call, and display the incoming call information visually on the LCD screen and a call waiting tone will be heard. If this feature is disabled, the new incoming call will be automatically rejected. To configure the call waiting feature, follow the next steps:   1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  Access to Call settings and then to Call waitingsub-menu. 3.  Select the account on which you want to enable the Call waiting feature, and then press the soft key Select (left soft key        ).
 P a g e | 49  DP750/DP720 User Guide  4.  Choose between Enabled and Disabled options and press the soft key Save,a prompt message will be displayed to confirm that the call waiting is enabled / disabled.   Do Not Disturb You can activate or deactivate the DND mode for your accounts registered on the handset under the call settings.  If  DND  mode  is  activated  for  a  specific  line,  all  incoming  calls  will  receive  busy  treatment depending on your configuration (forward to voice mail, busy tone…)  To enable or disable the DND mode, follow the next steps 1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  AccessCall settings       and then to Do Not Disturbsub-menu. 3.  Select the account on which you want to enable / disable the DND mode and then press Select   4.  Choose  between  Enabled and  Disabled  options  and  press  the  soft  key  Save  to  accept  the changes,a prompt message will be displayed to confirm that the DND is enabled / disabled.   You can check the line status if the DND mode is enabled on the base station.    Call forward The  call  forward  feature  will  allow  you  to  forward  all  the  incoming  calls  to  the  desired  number.  Three possible call forward types are available on the DP720.    Forward all: All the Incoming calls are immediately forwarded.  Busy Forward: Incoming calls are immediately forwarded if the line is busy.  No Answer Forward: Incoming calls are forwarded if not answered after a period of time. To enable the call forward, please refer to the following steps: 1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  Access toCall settings        and then to Call Forwardsub-menu. 3.  Select the account on which you want to enable/disable the call forward feature and press Select. 4.  Select the type of call forwarding and enter the number to forward the calls, and then press Save (left soft key    ) to apply the settings, a prompt message will be displayed to confirm that the new settings have been saved successfully.
 P a g e | 50  DP750/DP720 User Guide    Call transfer The DP720 supports the call transfer feature, you can transfer a call to another party using one of the following ways:  Blind Transfer: Transfer a call directly to another party without consulting  Attended Transfer: Transfer a call with prior consulting.  Blind transfer 1. Press the Options soft key (Left soft key        ) during a call, and then select Transfer.   2. The initial call will be on hold, enter the number or select the handset you want to transfer the call to.   3. Pressdial key        . The call is connected to the number or the handset you specified, and the LCD screen prompts Call Transferred.  Attended Transfer 1. Press the Options soft key (Left soft key        ) during a call, and then select New call.   2. Choose the line and enter the number you want to transfer the call to, then press the dial key          . 3. Once the second call is established, press the left soft key        Option and select Transfer.  Speed Dial Speed dial allows users to perform single-digit dialing to predefined numbers. This feature is particularly useful to speed up dialing the numbers that frequently used or hard to remember. A maximum of 8 speed dial numbers is allowed. For example, the digit key 2 is configured as a speed dial key and assigned the number 2000, the phone will dial out the number 2000 directly when you long press digit key 2. To assign the frequently used numbers from your shared contacts as speed dial keys: 1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  Access toCall settings        and then toSpeed Dialsub-menu. 3.  Choose the digit keys (2-9) and press Assign to specify the number (from the shared directory) to be as speed dial. You can press Change or Delete soft keysto modify/delete a speed dial key
 P a g e | 51  DP750/DP720 User Guide  3-Way Conference The DP720 supports creating a local conference with other parties, the handset support adding 3 parties including yourself in the same conference call.   To configure the 3 Way conference feature, see the following steps:   1. Press the dial key          to place a call to the first party. 2. Press the soft key Options (left soft key        ), then select Conference 3. Enter the number of the second party you want to add to the conference and press the dial key        .     To drop the conference call, press            or the End soft key. Voice Mail The voice mail feature ensures that you will never miss any important messages. It permits either to leave voice mails to someone else or receive and listen to voice mails via the handset Set Voice mail feature code 1.  Press Menu (left soft key      or the selection key      ) to bring up operation menu.   2.  Access toVoice Mail  and then selectSet Voice Mailsub menu. 3.  Select the account and enter the voice mail code feature, then press Save softkey. Play voice mail messages 1.  Press Menu (left soft key        or the selection key      ) to bring up operation menu.   2.  Access to Voice Mail  and then selectPlay Messagesub menu. 3.  Select the account to retrieve your voice messages saved on your voice mail.
 P a g e | 52  DP750/DP720 User Guide  Call Features The DP750/DP720 supports traditional and advanced telephony features including caller ID, caller ID with caller Name, call forward and etc. Table 11: Call Features *30 Block Caller ID(for all subsequent calls)   Off hook the phone;   Dial *30. *31 Send Caller ID(for all subsequent calls)   Off hook the phone;   Dial *31. *50 Disable Call Waiting     Off hook the phone;   Dial *50. *51 Enable Call Waiting   Off hook the phone;   Dial *51. *67 Call with Caller IDBlocked(per call)   Off hook the phone;   Dial *67 and then enter the number to dial out. *82 Call with Caller IDEnabled(per call)   Off hook the phone;   Dial *82 and then enter the number to dial out. *70 Call with Call Waiting Disable (per Call)   Off hook the phone;   Dial *70 and then enter the number to dial out. *71 Call with Call Waiting Enabled(per Call)   Off hook the phone;   Dial *71 and then enter the number to dial out. *72 Unconditional Call Forward. To set up unconditional call forward:   Off hook the phone;   Dial *72 and then enter the number to forward the call;
 P a g e | 53  DP750/DP720 User Guide    Press OK soft key or SEND key. *73 Cancel Unconditional Call Forward. To cancel the unconditional call forward:   Off hook the phone;   Dial *73;   Hang up the call. *90 Busy Call Forward. To set up busy call forward:   Off hook the phone;   Dial *90 and then enter the number to forward the call;   Press OK soft key or SEND key. *91 Cancel Busy Call Forward. To cancel the busy call forward:   Off hook the phone;   Dial *91;   Hang up the call. *92 Delayed Call Forward. To set up delayed call forward:   Off hook the phone;   Dial *92 and then enter the number to forward the call;   Press OK soft key or SEND key. *93 Cancel Delayed Call Forward. To cancel the delayed call forward:   Off hook the phone;   Dial *93;   Hang up the call.
 P a g e | 54  DP750/DP720 User Guide  RESTORE FACTORY DEFAULT SETTINGS  Warning: Restoring  the  Factory  Default  Settings  will  delete  all  configuration  information  on  the  phone.  Please backup  or  print  all  the  settings  before  you  restore  to  the  factory  default  settings.  Grandstream  is  not responsible for restoring lost parameters and cannot connect your device to your VoIP service provider.    Please follow the instructions below to reset the phone:    Press MENU button to bring up the keypad configuration menu;   Select Settings and enter;   Select System Settings >Factory Reset;  A warning window will pop out to make sure a reset is requested and confirmed;   Press Yessoft key to confirm and the phone will reboot.   To cancel the Reset, press No soft key instead.
 P a g e | 55  DP750/DP720 User Guide  EXPERIENCING DP750/DP720  Please visit our website: http://www.grandstream.com to receive the most up- to-date updates on firmware releases, additional features, FAQs, documentation and news on new products.   We encourage you to browse our product related documentation, FAQs and User and Developer Forum for  answers  to  your  general  questions.   If  you  have  purchased  our  products  through  a  Grandstream Certified Partner or Reseller, please contact them directly for immediate support.    Our technical support staff is trained and ready to answer all of your questions. Contact a technical support member or submit a trouble ticket online to receive in-depth support. Thank you again for purchasing the Grandstream DP720 / DP750, it willbe sure to bring convenience and color to both your business and personal life.
 P a g e | 56  DP750/DP720 User Guide   Compliance FCC Notice This device complies with part15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.    This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:  —Reorient or relocate the receiving antenna. —Increase the separation between the equipment and receiver. —Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. —Consult the dealer or an experienced radio/TV technician for help.  Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.      To ensure safety of users, the FCC has established criteria for the amount of radio frequency energy that can  be  safely  absorbed  by  a  user  or  bystander  according  to  the  intended  usage  of  the  product.  This product has been tested and found to comply with the FCC criteria. Both the Handset may be safely held against the ear of the user. The telephone base shall be installed and used such that parts of the user’s body other than the hands are maintained at a distance of approximately 20 cm (8 inches) or more.  Hearing Aid Compatibility (HAC)   This telephone system meets FCC standards for Hearing Aid Compatibility.  FCC RF Radiation Exposure Statement   This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment.   For base unit it should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body..

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