Grandstream Networks GXP1450 IP PHONE User Manual GXP
Grandstream Networks, Inc. IP PHONE GXP
Users Manual
Grandstream Networks, Inc. GXP1450 User Manual Page 1 of 1
Firmware 1.0.1.83 Last Updated: 08/2011
Grandstream Networks, Inc.
GXP1450 SIP Enterprise Phone
Grandstream Networks, Inc. GXP1450 User Manual Page 1 of 40
Firmware 1.0.1.83 Last Updated: 08/2011
TABLE OF CONTENTS
GXP1450 USER MANUAL
WELCOME ................................................................................................................................................................. 3
INSTALLATION......................................................................................................................................................... 4
EQUIPMENT PACKAGING ............................................................................................................................................. 4
CONNECTING YOUR PHONE ........................................................................................................................................ 4
SAFETY COMPLIANCES ................................................................................................................................................ 4
WARRANTY ................................................................................................................................................................. 4
PRODUCT OVERVIEW ............................................................................................................................................ 5
USING THE GXP1450 SIP ENTERPRISE PHONE ............................................................................................... 8
GETTING FAMILIAR WITH THE LCD ............................................................................................................................ 8
MAKING PHONE CALLS ............................................................................................................................................. 11
ANSWERING PHONE CALLS ....................................................................................................................................... 14
PHONE FUNCTIONS DURING A PHONE CALL ............................................................................................................. 14
CALL FEATURES ........................................................................................................................................................ 17
CUSTOMIZED LCD SCREEN & XML ......................................................................................................................... 18
CONFIGURATION GUIDE ...................................................................................................................................... 19
CONFIGURATION VIA KEYPAD .................................................................................................................................. 19
CONFIGURATION VIA WEB BROWSER ...................................................................................................................... 22
SAVING THE CONFIGURATION CHANGES ................................................................................................................... 36
REBOOTING THE PHONE REMOTELY.......................................................................................................................... 36
SOFTWARE UPGRADE & CUSTOMIZATION .................................................................................................. 37
FIRMWARE UPGRADE THROUGH TFTP/HTTP .......................................................................................................... 37
CONFIGURATION FILE DOWNLOAD ........................................................................................................................... 38
RESTORE FACTORY DEFAULT SETTING ....................................................................................................... 39
TABLE OF FIGURES
GXP1450 USER MANUAL
Figure 1: GXP1450 Keypad Layout……………………………………………………………………. 10
Figure 2: Keypad GUI Flow ............................................................................................................ 20
TABLE OF TABLES
GXP1450 USER MANUAL
Table 1: Equipment Packaging ....................................................................................................... 4
Table 2: GXP1450 Connectors ....................................................................................................... 4
Table 3: GXP1450 Feature Guide .................................................................................................. 5
Table 4: GXP1450 Key Features in a Glance ................................................................................. 5
Table 5: GXP1450 Hardware Specifications ................................................................................... 5
Table 6: GXP1450 Technical Specifications ................................................................................... 6
Table 7: LCD Display Definition ...................................................................................................... 8
Table 8: LCD Icons ......................................................................................................................... 8
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Table 10: GXP1450 Call Features ................................................................................................ 17
Table 11: Key Pad Configuration Menu ........................................................................................ 19
Table 12: Device Configuration - Status ....................................................................................... 23
Table 13: Device Configuration – Settings/Basic Settings ............................................................ 23
Table 14: Device Configuration – Settings /Advanced Settings ................................................... 25
Table 15: SIP Account Settings .................................................................................................... 30
GUI INTERFACE EXAMPLES
GXP1450 USER MANUAL
http://www.grandstream.com/products/gxp_series/general/documents/gxp21xx_gui.zip
1. Screenshot of Configuration Login Page
2. Screenshot of Status Page
3. Screenshot of Basic Setting Configuration Page
4. Screenshot of Advanced User Configuration Page
5. Screenshot of SIP Account Configuration Page
6. Screenshot of Saved Configuration Changes Page
7. Screenshot of Reboot Page
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Welcome
GXP1450 is a next generation enterprise grade IP phone that features 2 lines with 2 SIP accounts, a
180x60 backlit graphical LCD, 3 XML programmable context-sensitive soft keys, dual network ports with
integrated PoE and 3-way conference.
The GXP1450 delivers superior HD audio quality, rich and leading edge telephony features, personalized
information and customizable application service, automated provisioning for easy deployment, advanced
security protection for privacy, and broad interoperability with most 3rd party SIP devices and leading
SIP/NGN/IMS platforms. It is a perfect choice for enterprise users looking for a high quality, feature rich IP
phone with affordable cost.
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 the GXP1450 as it may cause damage to the
products and void the manufacturer warranty.
• 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 is not permitted.
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Installation
EQUIPMENT PACKAGING
Table 1: Equipment Packaging
GXP1450
Main Case
Yes
Handset
Yes
Phone Cord
Yes
Power Adaptor
Yes
Ethernet Cable
Yes
Base Stand
Yes
Quick Start Guide
Yes
CONNECTING YOUR PHONE
The connectors of the GXP1450 are located on the bottom of the device.
Table 2: GXP1450 Connectors
PC
10/100Mbps RJ-45 ports for PC (downlink) connection.
LAN
10/100Mbps RJ-45 port for LAN (uplink) connection. Supports PoE (802.3af).
Power Jack
5V DC power port; UL Certified
Headset Jack
RJ9
Handset Jack
RJ9
SAFETY COMPLIANCES
The GXP1450 complies with FCC/CE and various safety standards. The GXP1450 power adaptor is
compliant with the UL standard. Only use the universal power adaptor provided with the GXP1450 package.
The manufacturer’s warranty does not cover damages to the phone caused by unsupported power adaptors.
WARRANTY
If you purchased your GXP1450 from a reseller, please contact the company where you purchased your
phone for replacement, repair or refund. If you purchased the product directly from Grandstream, contact
your Grandstream Sales and Service Representative for a RMA (Return Materials Authorization) number
before you return the product. Grandstream reserves the right to remedy warranty policy without prior
notification.
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Product Overview
Table 3: GXP1450 Feature Guide
Features GXP1450
LCD Display 180x60 pixel
Number of Lines 2
Programmable Soft Keys 3
Extension Module N/A
Table 4: GXP1450 Key Features in a Glance
Features Benefits
Open Standards Compatible SIP RFC3261, TCP/IP/UDP, RTP, HTTP/HTTPS, ARP/RARP, ICMP,
DNS (A record, SRV and NAPTR), DHCP (both client and server),
PPPoE, TELNET, TFTP, NTP, STUN, SIMPLE, SIP over TLS, 802.1x,
TR-069
Superb Audio Quality Advanced Digital Signal Processing (DSP), Silence Suppression, VAD,
CNG, AGC
Network Interfaces Dual 10/100mbps Ethernet ports with integrated PoE
Feature Rich Traditional voice features including caller ID, call waiting, hold, transfer,
forward, block, auto-dial, off-hook dial
Advanced Features 2 line keys with dual-color LED and 2 SIP accounts, 3 way
conferencing, backlit graphic 180x60 LCD,
3 XML programmable
context sensitive soft keys, 5 navigation keys, 10 dedicated buttons for
HOLD, TRANSFER, CONFERENCE, VOLUME, HEADSET, MUTE,
SPEAKERPHONE, SEND/REDIAL, PHONEBOOK, MESSAGE
Advanced Functionality Customized downloadable ring-tones, SRTP, SIP over TLS, multi-
language support and XML enabled, adjustable positioning angles, wall
mountable, AES encryption, automatic multimedia service (eg., weather
information)
Table 5: GXP1450 Hardware Specifications
GXP1450
LAN Interface (Ethernet ports) Two (2) 10/100 Mbps Full/Half Duplex Ethernet Switch with LAN and
PC port with auto detection
Graphic LCD Display 180x60 pixel
Expansion Module Support No
Headset Jack RJ9
Call Appearance LED 2 Dual color (green/red)
Power over Ethernet Built-in auto-sensing: Cisco and IEEE 802.3af standard
Universal Switching Input: 100-240VAC 50-60 Hz
Power Adaptor Output: +5VDC, 800mA, UL certified
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Dimension 186mm (W) x 210mm (L) x 81mm (D)
Weight 0.8KG
Temperature 32 –104
°
F/ 0 – 40
°
C
Humidity 10% – 90% (non-condensing)
Compliance FCC / CE / C-Tick
Table 6: GXP1450 Technical Specifications
Lines
2 lines with 2 independent SIP accounts
Protocol Support Support SIP 2.0, TCP/UDP/IP, PPPoE, RTP, SRTP by SDES, HTTP,
ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, SIMPLE/PRESENCE
protocols, TR-069, 802.1x
Support multiple SIP accounts and up to 11 media channels
concurrently
Support SIP PUBLISH method (RFC 3903), SIP Presence package
(RFC 3856, 3863) for use of MFKs, SIP Dialog package (RFC 4235)
Support for SIP MESSAGE method (RFC 3428)
Display Backlit graphic LCD display, up to 4 level grayscale
Feature Keys HOLD, TRANSFER, CONF, VOLUME, HEADSET, MUTE,
SPEAKERPHONE, SEND/REDIAL, PHONEBOOK, MESSAGE, 3 XML
Programmable Softkeys, 5 Navigation keys,
Device
Management
NAT-friendly remote software upgrade (via TFTP/HTTP) for deployed
devices including behind firewall/NAT
Auto/manual provisioning system, Web GUI Interface
Address Book
Audio Features Full-duplex hands-free speakerphone
Advanced Digital Signal Processing (DSP)
Dynamic negotiation of codec and voice payload length
Support for G.723,1 (5.3/6.3K), G.729A/B, G.711 a/µ-law, G.726-32,
G.722 (wide-band), and iLBC codecs
In-band and out-of-band DTMF (in audio, RFC2833, SIP INFO)
Silence Suppression, VAD (voice activity detection), CNG (comfort noise
generation), ANG (automatic gain control)
Acoustic Echo Cancellation (AEC) with Acoustic Gain Control (AGC) for
speakerphone mode, Support side tone
Adaptive jitter buffer control (patent-pending) and packet delay and loss
concealment
HD audio handset with HD wideband audio codecs for excellent double-
talk performance
Telephony Features Intuitive graphic user interface (GUI), downloadable phone book (XML,
LDAP), support for anonymous call using privacy header, MLS (multi
language support)
Voice mail indicator, downloadable custom ring-tones, call hold, call
transfer (attended/blind), call forward, call waiting, caller ID, mute, redial,
call log, caller ID display or block, Do-Not-Disturb (DND) and volume
control
3-way conference, dial plan prefix, dial-plan support, off-hook auto dial,
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auto answer, early dial and speed dial
Network and Provisioning Via keypad/LCD, Web browser, or secure (AES encr
ypted) central
configuration file, manual or dynamic host configuration protocol (DHCP)
network setup
Support NAT traversal using IETF STUN and Symmetric RTP
Support for IEEE 802.1p/Q tagging (VLAN), Layer 3 ToS
Firmware Upgrade Support firmware upgrade via TFTP or HTTP
Support for Authenticating configuration file before accepting changes
User specific URL for configuration file and firmware files
Mass provisioning using TR-069 or encrypted XML configuration file
Advanced Server Features Message waiting indication, support DNS SRV Look up and SIP Server
Fail Over, Support customizable idle screen via downloading XML by
HTTP/TFTP
Security User and administrator level passwords, MD5 and MD5-sess based
authentication, AES based secure configuration file, SRTP, TLS, 802.1x
media access control
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Using the GXP1450 SIP Enterprise Phone
GETTING FAMILIAR WITH THE LCD
GXP1450 has a dynamic and customizable screen. The screen displays differently depending on whether
the phone is idle or in use (active screen).
Table 7: LCD Display Definition
Item
Definitions
DATE AND TIME Displays the current date and time. Can be synchronized with Internet time
servers.
LOGO/NAME
Displays company logo/name. This logo/name can be customized via xml
screen customization.
NETWORK STATUS
Displays the status of the phone and network. It will indicate whether the
network is down, starting or running (IP address). “## MISSED CALLS” is
shown here too.
STATUS ICON
Shows the status of the phone, using icons as shown in the next table.
LINE STATUS
INDICATOR
Displays the name of the account that is in use. Select another account by
pressing the LINE key on the left side.
SOFTKEYS
The softkeys are context sensitive and will change depending on the status
of the phone. Typical functions assigned to soft-buttons are:
• FORWARD ALL
Unconditionally forwards the phone line to another phone.
• MISSED CALL
This option shows up there were unanswered calls to this phone. The
Missed Calls option shows a list of the missed calls.
• NEXTSCR
Press this button to toggle between idle screen, weather and IP Address.
• REDIAL
Redials the last number.
• END CALL
Hangs up phone.
Table 8: LCD Icons
Icon
LCD Icon Definitions
DND (idle): ON when “Do Not Disturb” is activated in idle screen
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DND (talking):
ON when “Do Not Disturb” is activated in talking
Forward All: INDICATES all incoming calls will be forwarded to the
configured number
Forward on Busy: INDICATES calls will be forwarded when phone is
busy
Forward on No Answer:
INDICATES calls will be forwarded if the
phone does not answer
Forward All and No Answer: INDICATES calls will be forwarded if
Forward All and Forward on No Answer are enabled
Keypad Locked: ON when the keypad is locked
Enter Keypad Password: Enter the keypad password to unlock the
keypad
Voice Mail: ON when there are new voice messages
Network Status: Network is down
Missed Call Icon: Indicates missed call(s)
Save Call Record:
Indicates phone system writing the call records into
the flash. It might take 10 to 20 seconds to finish the process
Waiting For Response: Please wait for the phone system to response
before the keypad entry.
Handset Mode
Speaker Mode
Headset Mode
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FIGURE 1: GXP1450 KEYPAD LAYOUT
Table 9: GXP1450 Keypad Buttons
Key Button
Key Button Definitions
LINE KEYS
2 Line keys with LED, can be configured to different SIP profiles
HOLD
Place ACTIVE call on hold
TRANSFER
Transfer an ACTIVE call to another number
CONF
Press CONF button to connect Calling/Called party into conference
Enter to retrieve voice mails or other messages
Brings phonebook on screen
Mute an active call
Press HEADSET key to answer/hang up phone calls while using
headset. It also allows user to toggle between headset and speaker
Enable/Disable hands-free speaker
Enable/Disable handset mode ; or used as SEND/REDIAL
Press on “–” or “+” of the button to adjust the volume for
handset/speakerphone/headset when the phone in idle or during call
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MENU/OK:
• Enter Keypad Configuration “MENU” mode when phone is in
IDLE mode
• Use as ENTER/OK key when in Keypad Configuration.
Navigation keys “Up” “Down” “Left” and “Right”
• Press to navigate in menu options
• When the phone is idle, press “Up” to view missed call; press
“Down” to view phonebook
0 - 9, *, #
Standard phone keypad; press # key to send call; press * key to for
IVR functions
MAKING PHONE CALLS
Handset, Speakerphone and Headset Mode
The GXP1450 allows you to make phone calls via handset, speakerphone or headset mode. During the
active calls the user can switch between the handset and the speaker by pressing the speaker key. For
headsets to operate, the user must plug the headset to an RJ9 port on the back of the phone, which allows
the user to pick-up, speak or hang-up calls.
Multiple SIP Accounts and Lines
GXP1450 can support up to two independent SIP accounts. Each account is capable of independent SIP
server, user and NAT settings. Each of the line buttons is “virtually” mapped to an individual SIP account.
The name of each account is conveniently printed next to its corresponding button. In off-hook state, select
an idle line and the name of the account (as configured in the web interface) is displayed on the LCD and a
dial tone is heard.
For example: Configure ACCOUNT 1 and ACCOUNT 2 with Account Name as “VoIP 1”, “VoIP 2”,
respectively and ensure that they are active and registered. When LINE1 is pressed, you will hear a dial tone
and see “VoIP 1” on the LCD display; when LINE2 is pressed, you will hear a dial tone and see “VoIP 2” on
the LCD display.
To make a call, select the line you wish to use. The corresponding LINE LED will light up in green. User can
switch lines before dialing any number by pressing the same LINE button one or more times. If you continue
to press a LINE button, the selected account will circulate among the registered accounts.
For example: when LINE1 is pressed, the LCD displays “VoIP 1”; If LINE1 is pressed twice, the LCD
displays “VoIP 2” and the subsequent call will be made through SIP account 2.
Incoming calls to a specific account will attempt to use its corresponding LINE if it is not in use. When the
“virtually” mapped line is in use, the GXP1450 will flash the next available LINE in red. A line is ACTIVE
when it is in use and the corresponding LED is red.
Completing Calls
There are five ways to complete a call:
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1. DIAL: To make a phone call.
• Take Handset/SPEAKER/Headset off-hook
or press an available LINE key (activates speakerphone)
or press the NEW CALL soft-key
• The line will have a dial tone and the primary line (LINE1) LED is red
If you wish, select another LINE key (alternative SIP account)
• Enter the phone number
• Press the SEND key
or press the “DIAL” softkey
2. REDIAL: To redial the last dialed phone number.
When redialing the phone will use the same SIP account as was used for the last call. Thus, when
the second SIP account was made for the last call/call attempt, the phone will use the second
account to redial.
• Take Handset/SPEAKER/Headset off-hook or
press an available LINE key (activates speakerphone), the corresponding LED will be red
• Press the SEND button
or press the REDIAL softkey
3. USING THE CALL HISTORY: To call a phone number in the phone’s history.
When using the call history, the phone will use the same SIP account as was used for the last
call/call attempt. Thus, when returning a call made to the second SIP account, the phone will use the
second SIP account return the call.
• Press the MENU button to bring up the Main Menu
• Select Call History and then “Received Calls”, “Missed Calls” or “Dialed Calls” depending on
your needs
• Select phone number using the arrow keys
• Press OK to select
• Press OK again to dial
4. USING THE PHONEBOOK: To call a phone in from the phone’s phonebook.
Each entry in the phonebook can be attached to an individual SIP account. The phone will use that
SIP account to make the phone call.
• Go to the phonebook by:
i. Pressing the phonebook button (bottom, left-hand side of phone), or
ii. Pressing the DOWN arrow key, or
iii. Pressing the menu button and
Selecting “Phone Book” and
Press MENU
• Select the phone number by using the arrow keys
• Press OK so select
• Press OK again to dial
5. PAGING/INTERCOM:
The paging/intercom function can only be used if the SERVER/PBX supports this feature and both
the phones and PBX are correctly configured.
• Take the Handset/SPEAKER/Headset off-hook
• Select the LINE key associated with account
• Press OK key to display LCD: LINEx: PAGE
• Dial the phone number you want to Page/Intercom
• Press SEND key.
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NOTE: Dialtone and dialed number display occurs after the phone is off-hook and the line key is selected.
The phone waits 4 seconds (by default; No key Entry Timeout) before sending and initiating the call. Press
the “SEND” or “#” button to override the 4 second delay.
Making Calls using IP Addresses
Direct IP calling allows two phones to talk to each other in an ad-hoc fashion without a SIP proxy. VoIP calls
can be made between two phones if:
• Both phones have public IP addresses, or
• Both phones are on a same LAN/VPN using private or public IP addresses, or
• Both phones can be connected through a router using public or private IP addresses (with necessary
port forwarding or DMZ)
To make a direct IP call, please follow these steps:
1. Press MENU button to bring up MAIN MENU
2. Select “Direct IP Call” using the arrow-keys
3. Press OK to select
4. Input the 12-digit target IP address. (Please see example below)
5. Press OK key to initiate call
To make a quick IP call, please refer to next section.
For example: If the target IP address is 192.168.1.60 and the port is 5062 (e.g. 192.168.1.60:5062), input
the following: 192*168*1*60#5062 - The “ * ” key represent the dot“.” ; The “#” key represent colon “:”. Press
OK to dial out.
Quick IP Call Mode
The GXP1450 also supports Quick IP call mode. This enables the phone to make direct IP-calls, using only
the last few digits (last octet) of the target phone’s IP-number.
This is possible only if both phones are in under the same LAN/VPN. This simulates a PBX function using
the CMSA/CD without a SIP server. Controlled static IP usage is recommended.
Setting up the phone to make Quick IP calls
To enable Quick IP calls, the phone has to be setup first. This is done through the web-setup function. In the
“Advanced Settings” page, set the "Use Quick IP-call mode to YES. When #xxx is dialed, where x is 0-9 and
xxx <=255, a direct IP call to aaa.bbb.ccc.XXX is completed. “aaa.bbb.ccc” is from the local IP address
regardless of subnet mask. The numbers #xx or #x are also valid. The leading 0 is not required (but OK).
For example:
192.168.0.2 calling 192.168.0.3 -- dial #3 follow by SEND or #
192.168.0.2 calling 192.168.0.23 -- dial #23 follow by SEND or #
192.168.0.2 calling 192.168.0.123 -- dial #123 follow by SEND or #
192.168.0.2: dial #3 and #03 and #003 results in the same call -- call 192.168.0.3
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NOTE: If you have a SIP Server configured, a Direct IP-IP still works. If you are using STUN, the Direct IP-
IP call will also use STUN. Configure the “Use Random Port” to “NO” when completing Direct IP calls.
ANSWERING PHONE CALLS
Receiving Calls
1. Incoming single call: Phone rings with selected ring-tone. The corresponding account LINE flashes
red. Answer call by taking Handset/SPEAKER/Headset off hook or pressing SPEAKER or by
pressing the corresponding account LINE button.
2. Incoming multiple calls: When another call comes in while having an active call, the phone will
produce a Call Waiting tone (stutter tone). Next available lines will flash red (as described in section
4.3.2). Answer the incoming call by pressing its corresponding LINE button. The current active call
will be put on hold.
3. Paging/Intercom Enabled: Phone beeps once and automatically establishes the call via SPEAKER.
(PBX or Server must also supports this feature)
Do Not Disturb
1. Press the menu button, and scroll down to “Preference”.
2. Select “Do Not Disturb” by pressing menu button.
3. Use arrow keys to either enable or disable “Do Not Disturb” feature.
4. When enabled, there will be a special “Do Not Disturb” icon appearing on the display. This will send
the incoming caller directly to voicemail.
PHONE FUNCTIONS DURING A PHONE CALL
Call Waiting/ Call Hold
1. Hold: Place a call on hold by pressing the “HOLD” button.
2. Resume: Resume call by pressing the corresponding blinking LINE.
3. Multiple Calls: Automatically place ACTIVE call on hold by selecting another available LINE to place
or receive another call. Call Waiting tone (stutter tone) audible when line is in use.
Mute
1. Press the MUTE button to enable/disable muting the microphone.
2. The “Line Status Indicator” will show “LINEx: SPEAKING” or “LINEx: MUTE” to indicate whether the
microphone is muted.
Call Transfer
GXP1450 supports both Blind and Attended transfer. Also, users could make auto-attended transfer when
this feature is enabled from web GUI.
1. Blind Transfer: Press “TRANSFER” button, then dial the number and press the “SEND” button to
complete transfer of active call.
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2. Attended Transfer: Press “LINEx” button to make a call and automatically place the ACTIVE LINE
on HOLD. Once the call is established, press “TRANSFER” key then the LINE button of the waiting
line to transfer the call. Hang up the phone call after “Transfer Successful” is displayed in the screen.
3. Auto-Attended Transfer: Users could enable Auto-Attended Transfer under Web GUI->Advanced
Setting Page. During the first call, press “TRANSFER” hard button and it will bring up another line.
The first call will be on hold. Enter the number and press SEND key to establish the second call (If
pressing soft key “transfer” after entering the number, it will do blind transfer instead). After the
second call is established, press “TRANSFER” hard button again. Now the phone will hang up and
the call will be transferred.
NOTE:
• To transfer calls across SIP domains, SIP service providers must support transfer across SIP
domains. Blind transfer will usually use the primary account SIP profile.
3-Way Conferencing
GXP1450 can host conference calls and supports up to 3-way conference calling.
1. Initiate a Conference Call:
Establish a connection with two parties
Press CONF button
Choose the desired line to join the conference by pressing the corresponding LINE button
Repeat previous two steps for all other parties that would like to join the conference. This
can be done at any time. However, if a new call comes in, the other calls will be placed on
hold and the host will have to individually re-join the held lines back into the conference by
repeating the previous two steps again
2. Cancel Conference:
If after pressing the “CONF” button, a user decides not to conference anyone, press CONF
again or the original LINE button
This will resume two-way conversation
3. End Conference:
Press HOLD to end the conference call and put all parties on hold
To speak with an individual party, select the corresponding blinking LINE
GXP1450 also supports Easy Conference mode. In Easy Conference mode, users can initiate conference
by calling another number when the current line is in talking or conference. Also the conference can be re-
established by pressing the ReConf softkey when the conference is on hold. Easy Conference mode can be
used combined with the traditional ways to establish the 3-way conference above.
1. Initiate a Conference Call:
Establish one call
Press CONF button and a new line will be brought up
Dial the number and press SEND button to establish the second call
Press CONF button again or press the ConfCall softkey to establish the 3-way conference
2. Join More Parties in Existed Conference:
Establish conference call
Press CONF button and a new line will be brought up
Dial the number and press SEND button to establish the new call
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Press CONF button again or press the ConfCall softkey to join the new party in the existed
conference
3. Hold Conference:
During the conference, press HOLD button and the conference will be put on hold
- To resume the conference, press the ReConf softkey
- To split the conference and resume the call with each party, press the corresponding
line key
4. End Conference:
If the users decide not to conference after establishing the second call, press EndCall
softkey instead of ConfCall softkey/CONF button. It will end the second call and the screen
will show the first call/conference is on hold.
During the conference, press EndCall softkey or hang up to end the conference
NOTE:
• The party that starts the conference call has to remain in the conference for its entire duration, you
can put the party on mute but it must remain in the conversation. Also, this is not applicable when the
feature “Transfer on call hangup” is turned on.
• When using Easy Conference mode, press SEND button to establish the second call after entering
the number instead of using “#”.
Voice Messages (Message Waiting Indicator)
A blinking red MWI (Message Waiting Indicator) indicates a message is waiting. Press the MSG button to
retrieve the message. An IVR will prompt the user through the process of message retrieval. Press a specific
LINE to retrieve messages for a specific line account.
NOTE:
• Each line has a separate voicemail account. Each account requires a voicemail portal number to be
configured in the “voicemail user id” field.
• To check which line account has a message 1) press the message button (this always checks the
primary account), 2) check each line for stutter tone or 3) check missed calls using the menu.
Shared Call Appearance (SCA)
The GXP1450 phone supports shared call appearance by Broadsoft standard. This feature allows members
of the SCA group to shared SIP lines and provides status monitoring (idle, active, progressing, hold) of the
shared line. When there is an incoming call designated for the SCA group, all of the members of the group
will be notified of an incoming call and will be able to answer the call from the phone with the SCA extension
registered.
All the users that belong to the same SCA group will be notified by visual indicator when a user seizes the
line and places an outgoing call, and all the users of this group will not be able to seize the line until the line
goes back to an idle state or when the call is placed on hold. (With the exception of when multiple call
appearances are enabled on the server side)
In the middle of the conversation, there are two types of hold: Public Hold and Private Hold. When a member
of the group places the call on public hold, the other users of the SCA group will be notified of this by the red-
flashing button and they will be able to resume the call from their phone by pressing the line button. However,
if this call is placed on private-hold, no other member of the SCA group will be able to resume that call.
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To enable shared call appearance, the user would need to register the shared line account on one of the
accounts on the phone. In addition, they would need to navigate to “Settings”->”Basic Settings” on the web
GUI and set the line to “Shared Line” with the corresponding account. If the user requires more shared call
appearances, the user can configure multiple line buttons to be “shared line” buttons associated with the
account.
CALL FEATURES
The GXP1450 supports traditional and advanced telephony features including caller ID, caller ID w/name,
call forward/transfer/park/hold as well as intercom/paging.
Table 10: GXP1450 Call Features
Key Call Features
*30 Block Caller ID (for all subsequent calls)
Offhook and dial “*30”.
*31 Send Caller ID (for all subsequent calls)
Offhook and dial “*31”.
*67 Block Caller ID (per call)
Offhook, dial “*67” and then enter the number to dial out.
*82 Send Caller ID (per call)
Offhook, dial “*82” and then enter the number to dial out.
*70 Disable Call Waiting (per Call)
Offhook, dial “*70” and then enter the number to dial out.
*71 Enable Call Waiting (per Call)
Offhook, dial “*71” and then enter the number to dial out.
*72 Unconditional Call Forward
Offhook, dial “*72”. Then enter the number to forward the call and press “#” or OK
softkey.
*73 Cancel Unconditional Call Forward
Offhook, dial “*73” and the phone will hang up.
*90 Busy Call Forward
Offhook, dial “*90”. Then enter the number to forward the call and press “#” or OK
softkey.
*91 Cancel Busy Call Forward
Offhook, dial “*91” and the phone will hang up.
*92 Delayed Call Forward
Offhook, dial “*92”. Then enter the number to forward the call and press “#” or OK
softkey.
*93 Cancel Delayed Call Forward
Offhook, dial “*93” and the phone will hang up.
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CUSTOMIZED LCD SCREEN & XML
GXP1450 Enterprise IP phone supports both simple and advanced XML applications: 1) XML Custom Screen and
2) XML Downloadable Phonebook. For more information on how to create a downloadable XML phonebook,
creating a custom idle screen and/or reprogramming the softkeys on GXP1450, please visit our website at:
http://www.grandstream.com/support
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Configuration Guide
The GXP1450 can be configured in two ways. Firstly, using the Key Pad Configuration Menu on the phone;
secondly, through embedded web-configuration menu.
CONFIGURATION VIA KEYPAD
To enter the MENU, press the round button. Navigate the menu by using the arrow keys: up/down and left/right.
Press the OK button to confirm a menu selection, delete an entry by pressing the MUTE/DEL button. The phone
automatically exits MENU mode with an incoming call, the phone is off-hook or the MENU mode if left idle for 20
seconds.
Press the MENU button to enter the Key Pad Menu. The menu options available are listed in table 11.
Table 11: Key Pad Configuration Menu
Item Description
Call History Displays histories of answered, dialed, missed, and transferred and forwarded
calls
Status Displays the network status, account status, software version, MAC-address and
hardware version of the phone
Phone Book Displays the phonebook and downloads phonebook XML
LDAP Directory Displays the LDAP directory and downloads directory
Instant Messages Goes to instant messages
Direct IP Call Dials IP address for direct IP call
Preference Press Menu button to enter this sub menu including:
• Do NOT Disturb
DND (Do Not Disturb) function could be turned on or off in the “Do Not
Disturb” menu.
• Ring Tone
Choose different ring tones in the “Ring Tone” menu.
• Ring Volume
Press Menu button to hear the selected ring volume, press “←” or “→”
to hear and adjust the ring tone volume.
• LCD Contrast
Press “←” or “→” to adjust the LCD contrast.
• LCD Brightness
Press “←” or “→” to adjust the LCD brightness for active/idle screen.
• Download SCR XML
The phone will download the custom idle screen if available.
• Erase Custom SCR
Custom idle screen will be erased and will be replaced with default
logo.
• Display Language
Users can choose English, Simplified Chinese, Traditional Chinese,
Korean, Japanese, Italian, Spanish, French, German
, Portuguese,
Russian, Croatian, Hungarian, Polish, Slovenian, Arabic, Hebrew or
Dutch which are built in the phone. Users could select Automatic for
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local language based on IP location if available. Also, the phone will
download secondary language if available.
• Time Settings
Users can set the date and time on the phone.
Press Menu button to choose the menu item
Press “←” or follow the soft keys to return to the main menu
Config Press Menu button to display the configuration selections:
• SIP
To change SIP server settings for SIP account (SIP Proxy, Outbound
Proxy, SIP User ID, SIP Auth ID, SIP Password, SIP Transport and
Audio).
• Upgrade
To configure the firmware server and Config server
for upgrading or
provisioning the phone.
• Factory Reset
Key in the physical/MAC address on the back of the phone.
Press OK softkey to reset to FACTORY DEFAULT setting. Do not use
Factory Reset unless you want to restore factory settings.
• Layer 2 QoS
Configure 802.1Q/VLAN Tag and priority value.
Factory Functions
Press Menu to display the factory function items including
• Audio Loopback
Speak into the handset. If you hear your voice in the handset, your audio
is working fine. Press Menu button to exit the mode.
• Diagnostic Mode
All LEDs will light up.
Press any key on the keypad, to display the button name in the LCD. Lift
and put back the handset or press Menu button to exit the diagnostic
mode.
Press ‘←’ to return the main menu
Network
To select IP mode (DHCP/Static IP/PPPoE); to setup PPPoE, IP address,
Netmask, Gateway address and DNS Server 1 and DNS Server 2.
Call Features
To enable/disable and configure Forward All, Forward Busy, Forward No Answer,
No Answer Timeout, press Call Features and select the Account x to set the
forward call features on this account.
Reboot Select on Reboot and press Menu button to reboot the device.
Exit Exit from this menu
FIGURE 2: KEYPAD GUI FLOW
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Call History
Status
Phone Book
LDAP Directory
Instant
Message
Direct IP Call
Preference
Config
Factory
Functions
Network
Call Features
Reboot
Exit
MENU
Answered Calls
Dialed Calls
Missed Calls
Transferred Calls
Forwarded Calls
Clear All
Back
Delete All Entries
New Entry
Download Phonebook XML
Delete All Entries
Back
Phone Book
First Name:
Last Name
Number:
Acct:
Confirm Add:
Cancel & Return:
New Entry
View Directory
Download Directory
Search Configuration
Back
LDAP Directory
Select Filter
Filter Value
Back
Search Configuration
Clear All
Back
Preference
Do Not Disturb
Ring Tone
Ring Volume
LCD Contrast
LCD Brightness
Download SCR XML
Erase Custom SCR
Display Language
Time Settings
Back
SIP
Upgrade
Factory Reset
Layer 2 QoS
Back
Audio Loopback
Diagnostic Mode
Back
Factory Function
Config
Enable DND
Disable DND
Back
Default Ring
Ring1
Ring2
Ring 3
Back
Do Not Disturb
Ring Tone
Account
SIP Proxy
Outbound Proxy
SIP User ID
SIP Auth ID
SIP Password
SIP Transport
Audio
Save
Cancel
Firmware Server
Config Server
Upgrade Via
Back
802.1Q/VLAN Tag
Priority value
Reset Vlan Config
Back
Upgrade
Layer 2 QoS
Instant Message
Keypad/LED Diagnostic
Diagnostic Mode
SIP
IP Setting
PPPoE Settings
IP
Netmask
Gateway
DNS Server 1
DNS Server 2
Back
Network
Call History Items
Account 1
Account 2
Call History
Call Features
Forward All
Forward Busy
Forward No Answer
No Answer Timeout
Account X
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CONFIGURATION VIA WEB BROWSER
The GXP1450 embedded Web server responds to HTTP/HTTPS GET/POST requests. Embedded HTML
pages allow a user to configure the IP phone through a Web browser such as Microsoft’s IE, Mozilla Firefox,
Google Chrome.
Access the Web Configuration Menu
To access the phone’s Web Configuration Menu
• Connect the computer to the same network as the phone1
• Make sure the phone is turned on and shows its IP address
• Start a Web browser on your computer
• Enter the phone’s IP address in the address bar of the browser2
• Enter the administrator’s password to access the Web Configuration Menu3
1 The Web-enabled computer has to be connected to the same sub-network as the phone. This can easily
be done by connecting the computer to the same hub or switch as the phone is connected to. In absence
of a hub/switch (or free ports on the hub/switch), please connect the computer directly to the phone using
the PC port on the phone.
2 If the phone is properly connected to a working Internet connection, the phone will display its IP address.
This address has the format: xxx.xxx.xxx.xxx, where xxx stands for a number from 0 to 255. You will need
this number to access the Web Configuration Menu. For example, if the phone shows 192.168.0.60,
please use “http://192.168.0.60” in the address bar of your browser.
3 The default administrator password is “admin”; the default end-user password is “123”.
NOTE:
• When changing any settings, always SUBMIT them by pressing “UPDATE” button on the bottom of
the page. If, after having submitted some changes, more settings have to be changed, press the
menu option needed.
• All the options under Basic Setting and Account Setting, and most of the options under Advanced
Setting do not require reboot after submitting the changes. Under Advanced Setting, the parameters
on network configuration require reboot after update.
Definitions
This section will describe the options in the Web configuration user interface. As mentioned, a user can log in
as an administrator or end-user.
Functions available for the end-user are:
• Status: Displays the network status, account status, software version and MAC address of the
phone, and service status.
• Basic Settings: Basic preferences such as date and time settings, multi-purpose keys and LCD
settings can be set here.
Additional functions available to administrators are:
• Advanced Settings: To set advanced network settings, codec settings and XML configuration
settings and etc.
• Account: To configure the SIP account.
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Table 12: Device Configuration - Status
MAC Address
The device ID, in HEXADECIMAL format.
IP Address
This field shows IP address of GXP1450.
Product Model
This field contains the product model information.
Part Number
This field contains the product part number.
Software Version
• Prog: This is the main firmware release number, which is always used for identifying
the software (or firmware) system of the phone.
• Boot: Booting code version number
• Core: Core code version number
• Base: Base code version number
• DSP: DSP code version number
• Aux: Aux code version number
System Up Time
This field shows system up time since the last reboot.
System Time
This field shows the current time on the phone system.
Registered
Indicates whether accounts are registered to the related SIP server.
PPPoE Link Up
Indicates whether the PPPoE connection is enabled (connected to a modem).
Service Status
• GUI: shows the GUI status: running or stopped
• Phone: shows the phone status: running or stopped
Core Dump
Download core dump file for troubleshooting when necessary.
Table 13: Device Configuration – Settings/Basic Settings
End User Password
This contains the password to access the Web Configuration Menu. This field is case
sensitive with a maximum length of 25 characters.
IP Address
The GXP1450 operates in three modes:
1. DHCP mode
: The GXP1450 acquires its IP address from the first DHCP
server it discovers on its LAN. The DHCP option is reserved for NAT router
mode. In DHCP mode, all the field values for the Static IP mode are not us
ed
(even though they are still saved in the Flash memory).
2. PPPoE mode: To use the PPPoE feature, set the PPPoE account settings
(PPPoE account ID, PPPoE password and PPPoE service name). The
GXP1450 establishes a PPPoE session if any of the PPPoE fields is set.
3. Static IP mode: Configure all of the following fields: IP address, Subnet
Mask, Gateway, DNS Server 1, DNS Server 2 and Preferred DNS Server.
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802.1x Mode
This option allows the user to enable/disable 802.1x mode on the phone. The default
value is disabled. To enable 802.1x mode, this field should be set to EAP-MD5.
Once
enabled, the user would be required to enter the following information below to be
authenticated on the network:
• Identity
•
MD5 Password
Line Keys x
This allows the user to configure the account mapped to each line key, as well as
enabling Shared Call Appearance for the line. Options available for Key Mode are :
1. Line
2. Shared Line
Time Zone
This parameter controls the date/time display according to the specified time zone.
If “Allow DHCP Option 2 to override Time Zone setting” is checked, the time zone will
be overridden by the DHCP server.
Self-Defined Time
Zone
This parameter allows the users to define their own time zone.
The syntax is: std offset dst [offset], start [/time], end [/time]
Default is set to: MTZ+6MDT+5,M4.1.0,M11.1.0
MTZ+6MDT+5,
This indicates a time zone with 6 hours offset with 1 hour ahead which is U.S central
time. If it is positive (+) if the local time zone is west of the Prime Meridian (A.K.A:
International or Greenwich Meridian) and negative (-) if it is east.
M4.1.0,M11.1.0
The 1st number indicates Month: 1,2,3.., 12 (for Jan, Feb, .., Dec)
The 2nd number indicates the nth iteration of the weekday: (1st Sunday, 3rd
Tuesday…)
The 3rd number indicates weekday: 0,1,2,..,6( for Sun, Mon, Tues, … ,Sat)
Therefore, this example is the DST which starts from the first Sunday of April
to the
1st Sunday of November.
Weather Update
By default, “Enable Weather Update:” is set to “Yes”. If set to “No”, weather
information will not display on the phone.
Settings to customize the display of weather via:
• City Code – Enter city code
• Update Interval – Refresh time in minutes
• Degree Unit – Select Automatic, Fahrenheit or Celsius
Weather information is displayed on GXP1450 LCD when “Enable Weather Update”
is set to “Yes” and pressing the “SwitchSCR” soft-key once.
LCD Backlight
Brightness
Set the LCD brightness level for idle state and active state. Range from 0 to 8 where
0 means off and 8 means the brightest.
LCD Contrast
Set LCD contrast. Range from 0 to 20.
Time Display Format
LCD time display in 12 hour or 24 hour format.
Disable in-call DTMF
display
Default is “No”. This field is used to hide the keypad input during a call.
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Disable Missed Call
Backlight
Default is “No”. By default, LCD backlight will light up whenever there is a missed call.
HEADSET Key Mode
Default Mode:
- Toggle to Headset when using Speaker/Handset
- Dial, pick up call or hang up call using Headset
Toggle Headset/Speaker:
- toggle between using Headset and using Speaker
Headset TX gain (dB)
Set headset TX gain to -6, 0 or +6. Default is 0 db.
Headset RX gain (dB)
Set headset RX gain to -6, 0 or +6. Default is 0 db.
Table 14: Device Configuration – Settings /Advanced Settings
Admin
Password
Administrator password. Only the administrator can access the “Advanced Settings”
and “Account Settings” page. Password field is purposely blank for security reasons
after clicking update and saved. The maximum password length is 25 characters.
Layer 3 QoS
This field defines the layer 3 QoS parameter. It is the value used for IP Precedence
or Diff-Serv or MPLS. Default value is 12.
Layer 2 QoS
This contains the value used for layer 2 802.1Q/VLAN tag and 802.1p priority value.
Default setting is 0.
Local RTP port
This parameter defines the local RTP port pair used to listen and transmit. It is the
base RTP port for channel 0. When configured, channel 0 wil
l use this port _value
for RTP; channel 1 will use port_value+2 for RTP. Local RTP port ranges from 1024
to 65400 and must be even. The default value is 5004.
Use Random Port
This parameter, when set to “Yes”, will force random generation of both the local
SIP and RTP ports. This is usually necessary when multiple GXP
s are behind the
same NAT. Default is “No”.
Keep-alive interval
This parameter specifies how often the GXP1450 sends a blank UDP packet to the
SIP server in order to keep the “hole” on the NAT open. Default is 20 seconds.
Use NAT IP
NAT IP address used in SIP/SDP message. Default is blank.
STUN Server
IP address or Domain name of the STUN server. STUN resolution result will display
in the STATUS page of the Web UI.
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Firmware Upgrade and
Provisioning Allows the user to select the following options for firmware upgrade:
• Always Check for New Firmware
• Check New Firmware only when F/W pre/suffix changes
• Always Skip the Firmware Check.
Firmware upgrade may take up to 10 minutes depending on network environment.
Do not interrupt the firmware upgrading process.
Note: Grandstream strongly recommends that the user upgrade firmware
locally in
a LAN environment if using TFTP to upgrade. Please DO NOT
interrupt the
upgrade process (especially the power supply) as this will damage the device.
XML Config File
Password
The password used for encrypting the XML configuration file using OpenSSL. This
is required for the phone to decrypt the encrypted XML configuration file.
HTTP/HTTPS User Name
The user name for the HTTP/HTTPS server.
HTTP/HTTPS Password
The password for the HTTP/HTTPS server.
Upgrade Via
This field allows the user to choose the firmware upgrade method: TFTP, HTTP or
HTTPS.
Firmware Server Path
Defines the server path for the firmware server. It can be different from the
Configuration server which is used for provisioning.
Config Server Path
Defines the server path for provisioning; it can be different from the firmware server.
Firmware File
Prefix/Postfix
Default is blank. If configured, GXP1450 will request the firmware file with the
prefix/postfix and
only the firmware with the matching encrypted prefix will be
downloaded and flashed into the phone.
This setting is useful for ITSPs. End user should keep it blank.
Config File
Prefix/Postfix
Default is blank. If configured, GXP1450 will request the config file with the
prefix/postfix and only the file with the matching encrypted prefix will be downloaded
and flashed into the phone.
This setting is useful for ITSPs. End user should keep it blank.
Allow DHCP Option 43
and Option 66 to
override server
Default is “Yes”. This allows device gets provisioned from the server automatically.
Automatic Upgrade
This function is used by ITSP. End user should NOT touch these parameters.
Default is “No”. Choose “Yes” to enable automatic HTTP upgrade and provisioning.
In “Check for upgrade every” field, enter the number of minutes to check the HTTP
server for firmware upgrade or configuration changes. When set to “No”, the phone
will only perform HTTP upgrade and configuration check once at boot up.
Authenticate Conf File
Default is “No”. If set to “Yes”, configuration file would be authenticated before
acceptance. End user should use default setting.
Enable TR-069
Default is “No”.
ACS URL
URL for TR-069 Auto Configuration Servers (ACS).
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TR-069 Username
Enter username for TR-069.
TR-069 Password
Enter password for TR-069.
Periodic Inform Enable
Enable periodic inform. Default is “No”.
Periodic Inform Interval
When enabling periodic inform, set up the periodic inform interval.
Connection Request
Username
Enter the connection request username.
Connection Request
Password
Enter the connection request password.
Authentication Method
Select the authentication method among “No authentication”, “Basic” or Digest.
Connection Request
Port
Enter the connection request port.
Phonebook XML
Download
Selects the file download mode for the download server. Users can choose from
TFTP/HTTP/No.
Phonebook XML Server
Path
The URL/IP address of the phonebook download server.
Phonebook Download
Interval
The interval at which the phonebook will be downloaded from the download server
(in Minutes). The default setting is 0.
Remove Manually-edited
entries on Downloads
If set to “Yes”, the phone will remove the manually-edited entries in the old
phonebook list before downloading the new file. The default setting is set to “Yes”.
LDAP Directory
IP address or domain name of LDAP script server.
Idle Screen XML
Download
Enable XML Idle Screen download via TFTP or HTTP. Select whether to “Use
Custom Filename” or not, and define the “XML server path”.
Download Screen XML
At Boot-up
The phone will download the idle screen xml file if set to “Yes”. The default setting
is “No”.
Use custom filename
The phone will use custom filename specified in XML server path if set to “Yes”.
The default setting is “No”.
Idle Screen XML Server
Path
Specify the idle screen XML server path.
Offhook Auto Dial
To configure a User ID/extension to dial automatically when the phone is taken
offhook.
Syslog Server
The IP address or URL of System log server. This feature is especially useful for
ITSPs.
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Syslog Level
Select the ATA to report the log level. Default is NONE. The level is one of DEBUG,
INFO, WARNING or ERROR. Syslog messages are sent based on the following
events:
• product model/version on boot up (INFO level)
• NAT related info (INFO level)
• sent or received SIP message (DEBUG level)
• SIP message summary (INFO level)
• inbound and outbound calls (INFO level)
• registration status change (INFO level)
• negotiated codec (INFO level)
• Ethernet link up (INFO level)
• SLIC chip exception (WARNING and ERROR levels)
• memory exception (ERROR level)
The Syslog uses USER facility. In addition to standard Syslog payload, it contains
the following components: GS_LOG: [device MAC address][error code]
error
message.
For example: May 19 02:40:38 192.168.1.14 GS
_LOG: [00:0b:82:00:a1:be][000].
Ethernet link is up.
Send SIP Log
When setting the “Yes”, phone will send out SIP Log to syslog server. Default
setting is “No”.
NTP server
This parameter defines the URI or IP address of the NTP (Network Time Protocol)
serve. It is used to display the current date/time.
Allow DHCP Option 42
to override NTP server
Default is “Yes”. This allows device gets provisioned for DHCP Option 42 from the
server automatically.
SSL Certificate
This defines the SSL certificate needed to access certain websites.
SSL Private Key
This defines the SSL Private key.
SSL Private Key
Password
This defines the SSL private key password.
Distinctive Ring Tone
Caller ID must be configured. Select a Distinctive Ring Tone 1 through 3 for a
particular Caller ID. The GXP1450 will ONLY use selected ring to
nes for particular
Caller IDs. For all other calls, the GXP1450 will use System Ring Tone. When
selected and no Caller ID is configured, the selected ring tone will be used for all
incoming calls.
System Ring Tone
System ring tone. Default is North American standard.
Adjust system ring tone frequencies and cadences based on local telecom
standard.
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Call Progress Tones
Using these settings, users can configure ring or tone frequencies based on
parameters from local telecom. By default, they are set to North American standard.
Frequencies should be configured with known values to avoid uncomfortable high
pitch sounds.
Syntax: f1=val,f2=val[,c=on1/off1[-on2/off2[-on3/off3]]];
(Frequencies are in Hz and cadence on and off are in 10ms)
ON is the period of ringing (“On time” in “ms”) while OFF is the period of silence. In
order to set a continuous ring, OFF should be zero. Otherwise it will ring ON ms
and a pause of OFF ms and then repeat the pattern. Up to three cadences are
supported.
Disable Call Waiting
Default is “No”. If set to “Yes”, the call waiting feature will be disabled.
Disable Call
Waiting Tone
Default is “No”. If set to “Yes”, the call waiting tone will be disabled.
Disable Direct IP Calls
Default is “No”. If set to “Yes”, direct IP calls will be disabled.
Use Quick IP Call Mode
Dial an IP address under the same LAN/VPN segment by entering the last octet in
the IP address.
In the Advanced Settings page there is an option “Use Quick IP-call mode”.
Default
setting is “No”. When set to “Yes”, and #XXX is dialed, where X is 0-
9 and XXX
<=255, phone will make direct IP call to aaa.bbb.ccc.XXX where aaa.bbb.ccc
comes from the local IP address REGARDLESS of subnet mask.
#XX or #X are also valid so leading 0 is not required (but OK). See
Quick IP Call
Mode for details.
Disable Conference
Default is “No”. If set to “Yes”, conference will be disabled.
Disable DND Button
Default is “No”. If set to “Yes”, the “DND” button on keypad will be disabled.
Disable Transfer
Default is “No”. If set to “Yes”, transfer will be disabled.
Auto-Attended Transfer
Default is “No”. If set to “Yes”, the phone will use attended transfer by default.
Configuration via
Keypad Menu
Configures the access control of configurations via the phone keypad menu. There
are three modes:
• Unrestricted
• Basic Settings Only
•
Constraint Mode
Enable STAR key
Keypad locking
Default is No. If set to “Yes”, when pressing STAR key for 4-5 seconds, there will be
a lock icon shown in the right side of the screen indication the keypad is locked.
To unlock, pressing STAR key for 4-
5 seconds and there will be a window
prompted asking for password.
Password to lock/unlock
Enter the password to lock the keypad in web GUI.
To unlock the keypad, enter the password in the prompted window in the phone’s
LCD screen.
Do not escape “#” as
%23 in SIP URI
Default is “No”. By default, # will be replaced as %23 in SIP URI.
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Display Language
Allows user to choose preferred display language in web UI and keypad UI.
Currently, the phone supports these languages: Arabic, German, English,
Spanish,
French, Hebrew, Croatian, Hungarian, Italian, Japanese, Korean,
Dutch, Polish,
Portuguese, Russian, Slovenian, Simplified Chinese and Traditional Chinese.
Note: The “Automatic” setting in language refers to Grandstream’s IP2Location
client which when connected to Internet would attempt to lookup a database
(driven
by Grandstream) with the IP address for its geographical location.
Language file postfix allows the language file to have different postfixes so the
phone can request a particular file. It will append an underscore "_" plus the string
in the language file postfix.
The default language file name is "gxp.txt". If the
field “Language File postfix “has
"NL" string in it, then the phone will request "gxp_NL.txt" instead of "gxp.txt".
User can only load one secondary language.
Supported downloadable language: Czech, Croatian, Estonian, French, German,
Italian, Polish, Portuguese, Slovak, Slovenian and Spanish.
How to set up Download Language:
This is similar to updating firmware in your local network environment.
1. Get the language file gxp.txt ready. Make sure the file is using UTF-8 encoding.
2.
Copy gxp.txt to the firmware server directory using your local TFTP or HTTP
server.
3. Access the advanced settings of the Web GUI, set “Display Language” to
“Download Language” and enter the server path in Firmware Server Path. Select
TFTP or HTTP for firmware upgrade.
4. Update and reboot the phone.
GXP1450 has up to two line appearances, each with an independent SIP account. Each SIP account
requires its own configuration page. Their configurations are identical.
Table 15: SIP Account Settings
Account Active
This field indicates whether the account is active. The default value is “Yes”.
Account Name
The name associated with each account - displayed on LCD.
SIP Server
SIP Server’s IP address or Domain name provided by VoIP service provider.
Secondary SIP Server
This field allows administrator to configure a backup SIP Server.
Outbound Proxy
IP address or Domain name of Outbound Proxy, Media Gateway, or Session Border
Controller. Used for firewall or NAT penetration in different network environment. If
the system detects symmetric NAT, STUN will not work. ONLY outbound proxy can
provide solution for symmetric NAT.
SIP User ID
User account information provided by VoIP service provider (ITSP); either an actual
phone number or formatted like one.
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Authenticate ID
SIP service subscriber’s Authenticate ID used for authentication. It can be identical
to or different from SIP User ID.
Authenticate Password
SIP service subscriber’s account password for GXP1450 to register to (SIP) servers
of ITSP.
Name
SIP service subscriber’s name that is used for Caller ID display.
DNS Mode
The default is set to A Record. If user wishes to locate the server by DNS SRV,
the user may select SRV or NATPTR/SRV. When "Use Configured IP" option is
selected, if SIP server is configured as domain name, phone will not send DNS
query, but use "Primary IP" or "Secondary IP" to send sip message if at least one
of them are not empty.
Primary IP
This option applies only if “Use Configured IP” is selected, the phone will send DNS
query to the Primary IP. Insert IP address here.
Backup IP 1
Insert the first back up IP here.
Backup IP 2
Insert the second back up IP here.
TEL URI
Select Tel URI as “Disabled”, “User=Phone” or “Enabled”. Default is “Disabled”.
SIP Registration
This parameter controls sending REGISTER messages to the proxy server. The
default setting is “Yes”.
Unregister on Reboot
Default is “No”. If set to “Yes”, the SIP user’s registration information will be cleared
on reboot.
Register Expiration
This parameter allows user to specify the time frequency (in minutes) that GXP1450
refreshes its registration with the specified registrar. The default interval is 60
minutes. The maximum interval is 65,535 minutes (about 45 days).
Reregister Before
Expiration
This parameter allows user to specify the time frequency (in seconds) that
GXP1450 sends out a re-
registration request before the Register Expiration. By
default is 0 second.
Local SIP Port
This parameter defines the local SIP port used to listen and transmit. The default
value for Account 1 is 5060 and 5062 for Account 2.
SIP Registration Failure
Retry Wait Time
Retry registration if the process failed. Default is 20 seconds.
SIP T1 Timeout
RFC 3261 SIP T1 timer. Default is 0.5 second.
SIP T2 Interval
RFC 3261 SIP T2 timer. Default is 4 seconds.
SIP Transport
Choose SIP Transport between UDP and TCP. Default is UDP.
SIP URI Scheme when
using TLS
Select “sip:” or “sips:”. Default is “sips:”.
Use Actual Ephemeral
Port in Contact with
TCP/TLS
Enable to use actual ephemeral port in contact with TCP/TLS. Default is “No”.
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Check Domain
Certificate
Enable to check the domain certificate. Default is “No”.
Remove OBP from
Route
The SIP Extension notifies the SIP server that it is behind a NAT/firewall.
Validate Incoming
Messages
This configuration selects whether or not the incoming messages should be
validated.
Support SIP Instance ID
Selects whether or not SIP Instance ID is supported.
NAT Traversal
This parameter activates the NAT traversal mechanism. It has options: No, STUN,
Keep-Alive, UPnP, Auto, VPN.
If selecting STUN and a STUN server is also specified, the phone performs
according to the STUN client specification. Using this mode, the embedded STUN
client detects if and what type of NAT/Firewall configuration is used. If the detected
NAT is a Full Cone, Restricted Cone, or a Port-Restricted Cone, the phone will use
its mapped public IP address and port in all of its SIP and SDP messages.
If selecting Keep-Alive with no specified STUN server, the GXP1450 will periodically
(every 20 seconds or so) send a blank UDP packet (with no payload data) to the
SIP server to keep the “hole” on the NAT open.
SUBSCRIBE for MWI
Default is “No”. When set to “Yes” a SUBSCRIBE for Message Waiting Indication
will be sent periodically.
SUBSCRIBE for
Registration
Default is “No”. When set to “Yes” a SUBSCRIBE for Registration will be sent
periodically.
Feature Key
Synchronization
Default is “No”. This option is to synchronize DND/Call Forward features with
Broadsoft. When set to “Yes”, a SUBSCRIBE will be sent out periodically to the
server. Then when DND/Call Forward features (Call Forward No Answer,
Unconditional Call Forward and Call Forward on Busy) are configured or changed
on the phone and the Broadsoft server side, those features will be synchronized on
the phone side and the Broadsoft server side.
PUBLISH for Presence
Enable Presence feature.
Proxy-Require
SIP Extension to notify SIP server that the unit is behind the NAT/Firewall.
Voice Mail UserID
When configured, user can access messages by pressing “MSG” button. This ID is
usually the VM portal access number.
Send DTMF
This parameter specifies the mechanism to transmit DTMF digit. There are 3
supported modes: in audio which means DTMF is combined in audio signal (not
very reliable with low-bit-rate codec), via RTP (RFC2833), or via SIP INFO.
DTMF Payload Type
Sends DTMF using RFC2833. The default is 101.
Early Dial
Default is “No”. Use only if proxy supports 484 responses.
Dial Plan Prefix
Sets the prefix added to each dialed number.
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Dial Plan
Dial Plan Rules:
1. Accepted Digits: 1,2,3,4,5,6,7,8,9,0 , *, #, A,a,B,b,C,c,D,d
2. Grammar: x - any digit from 0-9;
a) xx+ - at least 2 digit numbers
b) xx. - only 2 digit numbers
c) ^ - exclude
d) [3-5] - any digit of 3, 4, or 5
e) [147] - any digit of 1, 4, or 7
f) <2=011> - replace digit 2 with 011 when dialing
g) | - the OR operand
• Example 1: {[369]11 | 1617xxxxxxx}
Allow 311, 611, and 911 or any 10 digit numbers with leading digits 1617
• Example 2: {^1900x+ | <=1617>xxxxxxx}
Block any number of leading digits 1900 or add prefix 1617 for any dialed 7 digit
numbers
• Example 3: {1xxx[2-9]xxxxxx | <2=011>x+}
Allows any number with leading digit 1 followed by a 3 digit number, followed by any
number between 2 and 9, followed by any 7 digit number OR Allows any length of
numbers with leading digit 2, replacing the 2 with 011 when dialed.
3. Default: Outgoing – {x+}
Allow any length of numbers.
Example of a simple dial plan used in a Home/Office in the US:
{ ^1900x. | <=1617>[2-9]xxxxxx | 1[2-9]xx[2-9]xxxxxx | 011[2-9]x. | [3469]11 }
Explanation of example rule (reading from left to right):
• ^1900x. - prevents dialing any number started with 1900
• <=1617>[2-9]xxxxxx - allows dialing to local area code (617) numbers by dialing
7 numbers and 1617 area code will be added automatically
• 1[2-9]xx[2-9]xxxxxx |- allows dialing to any US/Canada Number with 11 digits
length
• 011[2-9]x. - allows international calls starting with 011
• [3469]11 - allow dialing special and emergency numbers 311, 411, 611 and 911
Note: In some cases where the user wishes to dial strings such as *123 to activate
voice mail or other applications provided by their service provider, the * should be
predefined inside the dial plan feature. An example dial plan will be: { *x+ } which
allows the user to dial * followed by any length of numbers.
Delayed Call Forward
Wait Time
Time waited before the call is forward to a number or VM.
Default is 20 seconds.
Enable Call Features
Default is “Yes”. If set to “No”, Call transfer, Call Forwarding & Do-Not-Disturb are
supported locally provided ITSP support those features. In addition, “ForwardAll”
softkey will be hidden if call feature code is disabled for Account 1.
Call Log
User can choose to disable Call Log and what kind of calls to log.
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Session Expiration
The SIP Session Timer extension enables SIP sessions to be periodically
“refreshed” via a SIP request (UPDATE, or re-INVITE. Once the session interval
expires, if there is no refresh via a UPDATE or re-INVITE message, the session is
terminated.
Session Expiration is the time (in seconds) at which the session is considered timed
out, provided no successful session refresh transaction occurs beforehand. The
default value is 180 seconds.
Min-SE
Defines the minimum session expiration (in seconds). Default is 90 seconds.
Caller Request Timer
If set to “Yes”, the phone will use session timer when it makes outbound calls if
remote party supports session timer.
Callee Request Timer
If selecting “Yes”, the phone will use session timer when it receives inbound calls
with session timer request.
Force Timer
If set to “Yes”, the phone will use session timer even if the remote party does not
support this feature. If set to “No”, the session timer is enabled only when the
remote party supports this feature. To turn off Session Timer, select “No” for Caller
Request Timer, Callee Request Timer, and Force Timer.
UAC Specify Refresher
As a Caller, select UAC to use the phone as the refresher, or UAS to use the Callee
or proxy server as the refresher.
UAS Specify Refresher
As a Callee, select UAC to use caller or proxy server as the refresher, or UAS to
use the phone as the refresher.
Force INVITE
Session Timer can be refreshed using INVITE method or UPDATE method. Select
“Yes” to use INVITE method to refresh the session timer.
Enable 100rel
PRACK (Provisional Acknowledgment) method enables reliability to SIP provisional
responses (1xx series). This is required to support PSTN inter-networking.
Account Ring Tone
There are 4 uniquely defined ring tones:
• One (1) System Ring Tone: when selected, all calls will ring with system
ring tone.
• Three (3) Customer Ring Tones: when selected, incoming calls from
designated account will play selected ring tone.
Ring Timeout
Defines how long ring will ring when receiving a call. Default is 60 seconds.
Line-seize Timeout
Defines how long it will take before seizing the line in Shared Call Appearance
group. Default is 15 seconds.
Send Anonymous
If this parameter is set to “Yes”, the “From” header in outgoing INVITE message will
be set to anonymous, essentially blocking the Caller ID from displaying.
Anonymous Call
Rejection
Default is “No”. If set to “Yes”, anonymous call will be rejected.
Auto Answer
Default is “No”. If set to “Yes”, GXP1450 will automatically switch on speaker to
answer the incoming call. Set to Intercom/Paging mode, it will answer the call based
on the SIP info header from the server.
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Firmware 1.0.1.83 Last Updated: 08/2011
Allow Auto Answer by
Call-Info
If the Call-Info header contains answer-after=0, the call be answered automatically
(so called paging mode).
Refer-To Use Target
Contact
Default is “No”. If set to “Yes”, then for Attended Transfer, the “Refer-To” header
uses the transferred target’s Contact header information.
Transfer on Conference
Hangup
Defines whether or not the call is transferred to the other party if the initiator of the
conference hangs up.
Default setting is set to “No”.
Preferred Vocoder
GXP1450 supports up to 7 different Vocoder types including G.711(a/µ) (also
known as PCMU/PCMA), G.723.1, G.729A/B, G.726-32, iLBC, G.722 (wide-band).
Configure Vocoders in a preference list that is included with the same preference
order in SDP message. Enter the first Vocoder in this list by choosing the
appropriate option in “Choice 1”. Similarly, enter the last Vocoder in this list by
choosing the appropriate option in “Choice 8”.
SRTP Mode
Enable SRTP mode based on selection. Default is “No”.
Symmetric RTP
Selects whether or not symmetric RTP is supported.
Silence Suppression
This controls the silence suppression/VAD feature of the audio codec G.723 and
G.729. If set to “Yes”, when silence is detected, a small quantity of VAD packets
(instead of audio packets) will be sent during the period of no talking. If set to “No”,
this feature is disabled.
Voice Frames per TX
This field contains the number of voice frames to be transmitted in a single Ethernet
packet (be advised the IS limit is based on the maximum size of E
thernet packet is
1500 byte (or 120kbps)).
When setting this value, be aware of the requested packet time (ptime, used in SDP
message) is a result of configuring this parameter. This parameter is associated
with the first codec in the above codec Preference List or the actual used payload
type negotiated between the 2 conversation parties at run time. E.g.
, if the first
codec is configured as G.723 and the “Voice Frames per TX” is set to 2, then the
“ptime” value in the SDP message of an INVITE request will be 60ms
because each
G.723 voice frame contains 30ms of audio. Similarly, if this field is set to 2 and the
first codec is G.729 or G.711 or G.726, then the “ptime” value in the SDP message
of an INVITE request will be 20ms.
If the configured voice frames per TX exceeds the maximum allowed value, the IP
phone will use and save the maximum allowed value for the corresponding first
codec choice. The maximum value for PCM is 10 (x10ms) frames; for G.726, it is 20
(x10ms) frames; for G.723, it is 32 (x30ms)
frames; for G.729/G.728, 64 (x10ms)
and 64 (x2.5ms) frames respectively.
Please be careful when editing these parameters. Adjusting these parameters will
also change the dynamic jitter buffer. The GXP1450
has a patent dynamic jitter
buffer handling algorithm. The jitter buffer range is 20 ~ 200 ms.
We recommend using the default settings provided. We do not recommend
adjusting these parameters if you are an average user. Incorrect settings will affect
the voice quality.
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No Key Entry Timeout
Default is 4 seconds. After the timeout, the phone will send out the dialed number.
Use # as Dial Key
This parameter allows users to configure the “#” key as the “Send” (or “Dial”) key. If
set to “Yes”, the “#” key will immediately send the call. In this case, this key is
essentially equivalent to the “(Re)Dial” key. If set to “No”, the “#” key is included as
part of the dial string.
G723 Rate
Encoding rate for G723 codec. By default, 6.3kbps rate is set.
G726-32 Packing Mode
Select “ITU” or “IETF” for G726-32 packing mode.
iLBC Frame Size
iLBC packet frame size. Default is 20ms. For Asterisk PBX, 30ms might be
required.
iLBC Payload Type
Payload type for iLBC. Default value is 97. The valid range is between 96 and 127.
Conference URI
Configure the conference URI when using Broadsoft N-way calling feature.
Special Feature
Default is Standard. Choose the selection to meet special requirements from Soft
Switch vendors.
SAVING THE CONFIGURATION CHANGES
After the user makes a change to the configuration, press the “Update” button in the Configuration Menu.
The web browser will then display a message window to confirm saved changes.
We recommend rebooting or powering cycle the IP phone after saving changes.
REBOOTING THE PHONE REMOTELY
Press the “Reboot” button at the bottom of the configuration menu to reboot the phone remotely. The web
browser will then display a message window to confirm that reboot is underway. Wait 30 seconds to log in
again.
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Software Upgrade & Customization
Software (or firmware) upgrades are completed via either TFTP or HTTP. The corresponding configuration
settings are in the ADVANCED SETTINGS configuration page.
FIRMWARE UPGRADE THROUGH TFTP/HTTP
To upgrade via TFTP or HTTP, select TFTP or HTTP upgrade method. “Upgrade Server” needs to be set to
a valid URL of a HTTP server. Server name can be in either FQDN or IP address format. Here are examples
of some valid URLs.
• firmware.mycompany.com:6688/Grandstream/1.2.3.5
• 72.172.83.110
There are two ways to set up the Upgrade Server to upgrade firmware: via Key Pad Menu or Web
Configuration Interface.
Key Pad Menu
To configure the Upgrade Server via Key Pad Menu options, select “Config” from the Main Menu, then select
“Upgrade”. Under this sub Menu, user can edit Upgrade Server in either an IP address format or FQDN
format. Choose “Save and use TFTP” or “Save and use HTTP” to select upgrade method. Select “Reboot”
from the Main Menu to reboot the phone.
Web Configuration Interface
To configure the Upgrade Server via the Web configuration interface, open the web browser. Enter the
GXP1450 IP address. Enter the admin password to access the web configuration interface. In the
ADVANCED SETTINGS page, enter the Upgrade Server’s IP address or FQDN in the “Firmware Server
Path” field. Select TFTP or HTTP upgrade method. Update the change by clicking the “Update” button.
“Reboot” or power cycle the phone to update the new firmware.
During this stage, the LCD will display the firmware file downloading process. Please do NOT disrupt or
power down the unit. If a firmware upgrade fails for any reason (e.g., TFTP/HTTP server is not responding,
there are no code image files available for upgrade, or checksum test fails, etc), the phone will stop the
upgrading process and re-boot using the existing firmware/software.
Firmware upgrades take around 60 seconds in a controlled LAN or 5-10 minutes over the Internet. We
recommend completing firmware upgrades in a controlled LAN environment whenever possible.
No Local TFTP/HTTP Server
For users who do not have a local TFTP/HTTP server, we provide a HTTP server on the public Internet for
users to download the latest firmware upgrade automatically. Please check the Support/Download section of
our website to obtain this HTTP server IP address: http://www.grandstream.com/support/firmware.
Alternatively, download and install a free TFTP or HTTP server to the LAN to perform firmware upgrades. A
free Windows version TFTP server is available:
http://support.solarwinds.net/updates/New-customerFree.cfm.
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INSTRUCTIONS FOR LOCAL TFTP UPGRADE:
1. Unzip the file and put all of them under the root directory of the TFTP server.
2. The PC running the TFTP server and the GXP1450 should be in the same LAN segment.
3. Go to File -> Configure -> Security to change the TFTP server's default setting from
"Receive Only" to "Transmit Only" for the firmware upgrade.
4. Start the TFTP server, in the phone’s web configuration page
5. Configure the Firmware Server Path with the IP address of the PC
6. Update the change and reboot the unit
User can also choose to download the free HTTP server from http://httpd.apache.org/ or use Microsoft IIS
web server.
NOTE:
• When GXP1450 phone boots up, it will send TFTP or HTTP request to download configuration file
“cfg000b82xxxxxx”, where “000b82xxxxxx” is the MAC address of the GXP1450 phone. This file is
for provisioning purpose. For normal TFTP or HTTP firmware upgrades, the following error
messages in a TFTP or HTTP server log can be ignored: “TFTP Error from [IP ADRESS] requesting
cfg000b82023dd4 : File does not exist.Configuration File Download”
CONFIGURATION FILE DOWNLOAD
The GXP1450 can be configured via Web Interface as well as via Configuration File (binary or XML) through
TFTP or HTTP/HTTPS. The “Config Server Path” is the TFTP or HTTP server path for the configuration file.
It needs to be set to a valid URL, either in FQDN or IP address format. The “Config Server Path” can be the
same or different from the “Firmware Server Path”.
A configuration parameter is associated with each particular field in the web configuration page. A parameter
consists of a Capital letter P and 2 to 4 digit numeric numbers, i.e., P2 is associated with “Admin Password”
in the ADVANCED SETTINGS page. For a detailed parameter list, please refer to the corresponding
configuration template of the firmware.
Once the GXP1450 boots up (or re-booted), it will request a configuration file named “cfgxxxxxxxxxxxx”
followed by a request for configuration XML file named “cfgxxxxxxxxxxxx.xml”, where “xxxxxxxxxxxx” is the
MAC address of the device, i.e., “cfg000b820102ab”. The configuration file name should be in lower cases.
For more details on XML provisioning, please refer to http://www.grandstream.com/support.
Managing Firmware and Configuration File Download
When “Automatic Upgrade” is set to “Yes”, a Service Provider can use P193 (Auto Check Interval, in
minutes, default and minimum is 60 minutes) to have the devices periodically check for upgrades at pre-
scheduled time intervals. By defining different intervals in P193 for different devices, a Server Provider can
manage and reduce the Firmware or Provisioning Server load at any given time.
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Restore Factory Default Setting
WARNING: Restoring the Factory Default Setting will delete all configuration information of the phone.
Please backup or print all the settings before you restoring factory default settings. We are not responsible
for restoring lost parameters and cannot connect your device to your VoIP service provider.
INSTRUCTIONS FOR RESTORATION:
Step 1: Press “OK” button to bring up the keypad configuration menu, select “Config”, press “OK” to
enter submenu, select “Factory Reset” (Please refer to Table 5-1 of keypad flow chart)
Step 2: Enter the MAC address printed on the bottom of the sticker. Please use the following mapping:
0-9: 0-9
A: 22 (press the “2” key twice, “A” will show on the LCD)
B: 222
C: 2222
D: 33 (press the “3” key twice, “D” will show on the LCD)
E: 333
F: 3333
Example: if the MAC address is 000b8200e395, it should be key in as “0002228200333395”.
NOTE: If there are digits like “22” in the MAC, you need to type “2” then press “->” right arrow key to
move the cursor or wait for 4 seconds to continue to key in another “2”.
Step 3: Press the “OK” button to move the cursor to “OK”. Press “OK” button again to confirm. If the
MAC address is correct, the phone will reboot. Otherwise, it will exit to previous keypad menu interface.
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FCC Warning
This device complies with part 15 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.
Any Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
FCC 15.105 Class B
(b) For a Class B digital device or peripheral, the instructions furnished the user shall include
the following or similar statement, placed in a prominent location in the text of the manual:
Note: 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.