Grandstream Networks GXP2124 User manual

GXP2124 User Manual www.grandstream.com
Firmware version: 1.0.3.19 http://esupport.grandstream.com
Grandstream Networks, Inc.
GXP2124 SIP Enterprise Phone

Grandstream Networks, Inc. GXP2124 User Manual Page 1 of 50
Firmware version: 1.0.3.19 Last Updated: 03/2012
TABLE OF CONTENTS
GXP2124 USER MANUAL
WELCOME...................................................................................................................................3
INSTALLATION............................................................................................................................4
EQUIPMENT PACKAGING...............................................................................................................4
CONNECTING THE GXP2124........................................................................................................4
SAFETY COMPLIANCES.................................................................................................................5
WARRANTY..................................................................................................................................5
PRODUCT OVERVIEW................................................................................................................6
USING THE GXP2124 SIP ENTERPRISE PHONE .....................................................................9
GETTING FAMILIAR WITH THE LCD................................................................................................9
MAKING PHONE CALLS...............................................................................................................13
ANSWERING PHONE CALLS ........................................................................................................16
PHONE FUNCTIONS DURING A PHONE CALL ................................................................................16
CALL FEATURES.........................................................................................................................20
CUSTOMIZED LCD SCREEN &XML.............................................................................................21
CONFIGURATION GUIDE...........................................................................................................22
CONFIGURATION VIA KEYPAD.....................................................................................................22
CONFIGURATION VIA WEB BROWSER.........................................................................................26
SAVING THE CONFIGURATION CHANGES .....................................................................................47
REBOOTING THE PHONE REMOTELY ...........................................................................................47
SOFTWARE UPGRADE & CUSTOMIZATION..........................................................................48
FIRMWARE UPGRADE THROUGH TFTP/HTTP.............................................................................48
CONFIGURATION FILE DOWNLOAD ..............................................................................................49
RESTORE FACTORY DEFAULT SETTING..............................................................................50
TABLE OF FIGURES
GXP2124 USER MANUAL
FIGURE 1: KEYPAD GUI FLOW ....................................................................................................24

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TABLE OF TABLES
GXP2124 USER MANUAL
Table 1: Equipment Packaging......................................................................................4
Table 2: GXP2124 Connectors...................................................................................... 4
Table 3: GXP2124 Feature Guide .................................................................................6
Table 4: GXP2124 Key Features in a Glance................................................................6
Table 5: GXP2124 Hardware Specifications..................................................................7
Table 6: GXP2124 Technical Specifications..................................................................7
Table 7: LCD Display Definition.....................................................................................9
Table 8: LCD Icons......................................................................................................11
Table 9: GXP2124 Keypad Buttons............................................................................. 12
Table 10: GXP2124 Call Features................................................................................. 20
Table 11: Key Pad Configuration Menu......................................................................... 22
Table 12: Device Configuration - Status........................................................................ 28
Table 13: Device Configuration – Settings/Basic Settings.............................................28
Table 14: Device Configuration – Settings /Advanced Settings.....................................34
Table 15: SIP Account Settings..................................................................................... 40
GUI INTERFACE EXAMPLES
GXP2124 USER MANUAL
http://www.grandstream.com/products/gxp_series/general/documents/gxp2124_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 CONTACTS PAGE
7. SCREENSHOT OF SAVED CONFIGURATION CHANGES PAGE
8. SCREENSHOT OF REBOOT PAGE

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Welcome
GXP2124 is a next generation enterprise grade IP phone that features 240x120 backlit graphical LCD, 4 line
keys with up to 4 SIP accounts, 4 dedicated XML programmable context-sensitive soft keys, 24+4 XML
programmable speed-dial/BLF extension keys, dual network ports with integrated PoE, 5-way conference,
and Electronic Hook Switch (EHS). The GXP2124 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 IP PBX/Soft Switch/IMS platforms. It is an ideal solution for enterprise users looking
for a high quality, feature rich multi-line IP phone with many extension keys.
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 GXP2124 as it may cause damage to the
products and void the manufacturer warranty.
This document is subject to change without notice. The latest electronic version of this user manual is
available for download from: http://www.grandstream.com/support
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.

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Installation
EQUIPMENT PACKAGING
Table 1: Equipment Packaging
GXP2124
Main Case Yes
Handset Yes
Phone Cord Yes
Power Adaptor Yes
Ethernet Cable Yes
Phone Stand Yes
Wall Mount Yes
Quick Start Guide Yes
CONNECTING THE GXP2124
Table 2: GXP2124 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, supporting EHS (Electronic Hook-Switch) with Plantronics headsets.
Handset Jack RJ9.
To setup the GXP2124, follow the steps below:
1. Connect the handset and main phone case with the phone cord.
2. Connect the LAN port of the phone to the RJ-45 socket of a hub/switch or a router (LAN side of the router)
using the Ethernet cable.
3. Connect the 5V DC output plug to the power jack on the phone; plug the power adapter into an electrical
outlet.
4. The LCD will display provisioning or firmware upgrade information. Before continuing, please wait for the
date/time display to show up.
5. Using the phone embedded web server or keypad configuration menu, you can further configure the
phone using either a static IP or DHCP.

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SAFETY COMPLIANCES
The GXP2124 complies with FCC/CE and various safety standards. The GXP2124 power adaptor is
compliant with the UL standard. Only use the universal power adaptor provided with the GXP2124 package.
The manufacturer’s warranty does not cover damages to the phone caused by unsupported power adaptors.
WARRANTY
If you purchased your GXP2124 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: GXP2124 Feature Guide
Features GXP2124
LCD Display 240x120 pixel backlit graphical LCD, 8 level grayscale
Number of Lines 4 lines with 4 SIP accounts
Programmable Speed-dial/BLF Keys 24+4
XML Programmable Soft Keys 4
Table 4: GXP2124 Key Features in a Glance
Features Benefits
Open Standards Compatible SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP,
ICMP, DNS (A record, SRV and NAPTR), DHCP, PPPoE, TELNET, TFTP,
NTP, STUN, SIMPLE, 802.1x, LLDP, LDAP, TR-069, TLS, SRTP, IPV6
Superb Audio Quality HD wideband audio, superb full-duplex hands-free speakerphone with
advanced acoustic echo cancellation and excellent double-talk
performance
Network Interfaces Dual switched auto-sensing 10/100mbps Network ports with integrated
PoE
Feature Rich Traditional voice features including caller ID, call waiting, hold, transfer,
forward, block, auto answer, off-hook dial
Advanced Features Multi-line support with dual-color LED, multi-party conferencing, line
extension interface, large backlit graphic LCD, 4 navigation keys,
dedicated buttons for send/redial, speakerphone, headset, transfer,
conference (for up to 5 parties), mute, message, phonebook and volume,
large phonebook (up to 2000 contacts) and call history (up to 500 records)
Advanced Functionality Customized downloadable ring-tones, multi-language support, LCD
content customization via XML, XML application, built-in personalized
application service (e.g., local weather, stock, currency and etc.),
adjustable positioning angles, wall mountable, Automatic provisioning
using TR-069 or encrypted XML configuration file, TLS/SRTP/HTTPS for
advanced security protection, 802.1x for media access control

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Table 5: GXP2124 Hardware Specifications
GXP2124
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 240x120 pixel
Expansion Module Support No
Headset Jack RJ9, supporting EHS (Electronic Hook-Switch) with Plantronics
headsets
Call Appearance LED Dual color (green/red)
Power over Ethernet IEEE 802.3af standard
Universal Switching Input: 100-240VAC 50-60 Hz
Power Adaptor Output: +5VDC, 800mA, UL certified
Dimension 222mm(W) x 210mm(L) x 93mm(H)
Weight Unit weight: 0.98KG; Package weight: 1.63KG
Temperature 32 –104° F/ 0 – 40°C
Humidity 10% – 90% (non-condensing)
Compliance FCC Part 15 (CFR 47) Class B; EN55022 Class B, EN55024, EN61000-
3-2, EN61000-3-3, EN 60950-1; AS/NZS CISPR 22 Class B, AS/NZS
CISPR 24, RoHS; UL 60950 (power adapter)
Table 6: GXP2124 Technical Specifications
GXP2124
Protocols/Standards SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP,
ICMP, DNS (A record, SRV and NAPTR), DHCP, PPPoE, TELNET, TFTP,
NTP, STUN, SIMPLE, 802.1x, LLDP, LDAP, TR-069, TLS, SRTP, IPV6
Network Interfaces Dual switched 10/100Mbps ports with integrated PoE
Graphic Display Backlit 240x120 graphic LCD display with up to 8 level grayscale
Feature Keys 4 line keys with up to 4 SIP accounts, 4 XML programmable context
sensitive soft keys, 24+4 speed-dial/BLF extension keys with dual-color
LED, 5 navigation/menu Keys, 9 dedicated function keys for: MUTE,
PHONEBOOK, MESSAGE (with LED Indicator), HEADSET, TRANSFER,
CONFERENCE, SEND/REDIAL, SPEAKERPHONE, VOLUME

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Voice Codec Support for G.723.1, G.729A/B, G.711u/a-law, G.726, G.722 (wideband),
and iLBC, in-band and out-of-band DTMF (in audio, RFC2833, SIP INFO)
Telephony Features Hold, transfer, forward, 5-way conference, busy-lamp-field (BLF), call park,
pickup, shared-call-appearance (SCA)/bridged-line-appearance (BLA),
downloadable phone book (XML, LDAP, up to 2,000 items), call waiting,
call log (up to 500 records), XML customization of screen, off-hook auto
dial, auto answer, click-to-dial, flexible dial plan, hot desking, personalized
music ringtones and music on hold, server redundancy and fail-over
HD Audio Yes, both on handset and speakerphone
Headset Jack RJ9, supporting EHS (Electronic Hook-Switch ) with Plantronics headsets
Base Stand Yes, allow 2-angel positions
Wall Mountable Yes
QoS Layer 2 (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) QoS
Security User and administrator level passwords, MD5 and MD5-sess based
authentication, AES based secure configuration file, SRTP, TLS, 802.1x
media access control
Multi-language English, German, Italian, French, Spanish, Portuguese, Russian, Croatian,
Chinese, Korean, Japanese
Upgrade/Provisioning Firmware upgrade via TFTP/HTTP/HTTPS, mass provisioning using TR-
069 or encrypted XML configuration file
Power and Green Energy
Efficiency Universal power adapter included:
Input: 100-240VAC 50-60Hz; Output: +5VDC, 800mA;
Integrated Power-over-Ethernet (802.3af)
Max power consumption 3W (power adapter) or 3.5W (PoE)
Physical Dimension: 222mm (W) x 210mm (H) x 93mm (D)
Unit weight: 0.98KG
Package weight: 1.63KG
Temperature and Humidity 32–104oF / 0–40oC, 10 - 90% (non-condensing)
Package Content GXP2124 phone, handset with cord, base stand, universal power supply,
network cable, Quick Start Guide
Compliance FCC Part 15 (CFR 47) Class B; EN55022 Class B, EN55024, EN61000-3-
2, EN61000-3-3, EN 60950-1; AS/NZS CISPR 22 Class B, AS/NZS CISPR
24, RoHS; UL 60950 (power adapter)

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Using the GXP2124 SIP Enterprise Phone
GETTING FAMILIAR WITH THE LCD
GXP2124 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
Display Definition
DATE AND TIME Displays the current date and time. Can be synchronized with Internet
time servers.
LOGO 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 or running (IP address).
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 - Idle Screen
SwitchSCR
Press this button to toggle between different idle screens: default
idle screen, weather information, stock information and currency
information.
ForwardAll
Unconditionally forward the phone line (account 1) to another
phone.
MissedCalls
This option shows up unanswered calls to this phone.
Redial
Redial the last dialed number in idle screen when there is existed
call log.
EndCall
Hang up phone when dialing out or talking.
RefreshStock
Refresh the stock information when stock is enabled.
ReverseCur
Display the currency information in reverse order.
RefreshCur
Refresh the currency information when currency is enabled.
Note: If XML application is used, the softkey for XML application will
show up in idle screen as configured.

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SOFTKEYS - Call Screen
The softkeys are context sensitive and will change depending on the
status of the phone.
Redial
Redial the last dialed number after offhook when there is existed
call log.
Dial
Dial the call out after offhook and entering the number.
Hold
Put the current active call on hold.
AnswerCall
Answer the incoming call when the phone is ringing.
RejectCall
Reject the incoming call when the phone is ringing.
EndCall
End the active call.
Transfer
Transfer softkey will show up after pressing TRAN button and
entering transfer target number. Press Transfer softkey to do
blind transfer.

Split
In auto-attended transfer mode, after establishing the second
call, press Split to quit transfer and go back to normal talking
status.

ConfCall
Conference the active calls.
ReConf
Re-establish the conference among the calls on hold.
SPECIAL SOFTKEYS
(Only When Integrated with
GXE5024/5028)
Call Parking:
Please refer to GXE5024/5028 Online User Manual for more
information.
CallPark
When a GXP2124 dials out, the Call Park softkey will display on
screen. To park the call, press the “Call Park” button.

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PickUp
When another GXP2124 goes off-hook, the Call Pickup softkey
will display on screen. To pick up the parked call, press the “Call
Pickup” button.
Call Queue:
Please refer to GXE5024/5028 Online User Manual for more
information.
SignIn
Press this button to sign in to the call queue. Agent will be
prompted in the LCD display to select the call queue to join.
Press “menu” button on keypad to select “ok”. Once the agent
completely signs in, the agent will be brought back to the main
screen.
SignOut
Press this button to sign out of the call queue. Press “menu”
button on keypad to select “ok”. This will be displayed once the
agent is signed in to the call queue.
STATUS ICON Shows the status of the phone, using icons as shown in the next table.
Table 8: LCD Icons
Icon Definition
DND (idle): ON when “Do Not Disturb” is activated in idle screen.
Forward All: All incoming calls will be forwarded to the configured number.
Forward on Busy: Calls will be forwarded when phone is busy.
Forward on No Answer: Calls will be forwarded if the phone does not answer.
Forward All and No Answer: Calls will be forwarded if Forward All and Forward on No
Answer are enabled.
Keypad Locked: ON when the keypad is locked.
Enter Keypad Unlock Password
Voice Mail: ON when there are new voice messages.
Instant Message: ON when there are new instant messages.
Voice Mail and Instant Message: ON when there are both new voice messages and new
instant messages.

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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. The saving interval can be configured under
GXP2124 web GUI->Basic settings: Call History Flash Writing.
Waiting For Response: Please wait for the phone system to response before the keypad
entry.
Handset Mode
Speaker Mode
Headset Mode
Calling out: Phone is calling out.
Calling in: Phone is ringing with incoming call.
Incoming Call: The current call is an incoming call.
Outgoing Call: The current call is an outgoing call.
Call Failed: Fail to establish call.
SRTP: SRTP is used during the call.
MUTE
Call On Hold
Call Active
Conference Call
Core dump: Core dump available under web GUI->Status page.
Table 9: GXP2124 Keypad Buttons
Keypad Button Definition
LINE KEYS Line keys with LED, can be configured to 4 different SIP profiles.
SEND/REDIAL; Enable/Disable handset mode.
Transfer an ACTIVE call to another number.

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Press CONF button to connect Calling/Called party into conference.
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.
Enter to retrieve voice mails.
Brings phonebook on screen.
Enable/Disable hands-free speaker.
Volume up or down.
Menu/OK key in the center of the navigation keys. Press to enter menu
when phone is in idle. Use it as OK key in keypad configuration.
Navigation keys “Up” “Down” “Left” and “Right”.
Press to navigate in menu options.
During the call, press “Up” “Down” to adjust volume.
0 – 9, *, # Standard phone keypad; press # key to send call; press * key to for IVR
functions.
Multi Purpose Keys 24 MPKs on the right side of the phone and 4 MPKs on the right side of the
LCD (for BLF, Speed dial and etc).
MAKING PHONE CALLS
Handset, Speakerphone and Headset Mode
The GXP2124 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; or switch
between the handset and headset by pressing the headset key. For headsets to operate, the user must plug
the headset to an RJ9 port on the phone, which allows the user to pick-up, speak, or hang-up calls.
Multiple SIP Accounts and Lines
GXP2124 can support up to 4 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.

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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 GXP2124 will flash the next available LINE in red.
Completing Calls
There are six ways to complete a call:
1. DIAL:To make a phone call.
When the phone is onhook, enter the number and press SEND key to use account 1 to dial
out. OR,
Take Handset/SPEAKER/Headset off-hook
or press an available LINE key (activates speakerphone).
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 third SIP account was made for the last call/call attempt, the phone will use the third account to
redial.
When the phone is onhook, press SEND key directly to redial. OR,
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 CALL HISTORY:To call a phone number in Call 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 third SIP account, the phone will use the
third SIP account return the call.
Press the MENU button to bring up the Main Menu.
Select Call History and then “Answered Calls” “Dialed Calls”, “Missed Calls” “Transferred
Calls” or “Forwarded Calls” depending on what your needs.
Select phone number using the arrow keys.
Press DIAL softkey to dial.
4. USING THE PHONEBOOK:To call a phone number from 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.
Press PHONEBOOK key to bring up the phonebook.
Select phonebook entry using the arrow keys.
Press DIAL softkey to dial.

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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, or press LINE key.
Press MENU/OK key to toggle from "Dialing" to "Paging".
Dial the phone number you want to Page/Intercom
Press SEND key.
6. VIA CALL RETURN:On the GXP2124, the Multiple Purpose Key (programmable hard key) has to be
configured as Call Return under Web GUI->Basic Settings configuration. No user name and user ID
has to be set on the Multiple Purpose Key for Call Return. After pressing the Call Return key, the last
answered number will be dialed out.
Take handset off hook.
Press the configured Call Return key.
NOTE:
Dial-tone and dialed number display occurs after the handset 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.
Speed Dial
The Multi Purpose Key buttons, located on the right-hand-side of the phone, can be configured for speed
dial. Press the speed dial button to automatically call the assigned extension.
If “Speed Dial Via Active Account” is selected instead of “Speed Dial” on that Multi Purpose Key, it will act
just like speed dial but based on the current active account. For instance, if the phone is offhook and account
4 is active, by pressing this key it will call the configured speed dial number using account 4.
Making Calls using IP Addresses
Direct IP Call 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, for IPv4. (Please see example below)
5. Press OK softkey to initiate call.
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.

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Quick IP Call Mode
The GXP2124 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
web GUI->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 -- offhook the phone, dial #3 followed by DIAL softkey or SEND
192.168.0.2 calling 192.168.0.23 -- offhook the phone, dial #23 followed by DIAL softkey or SEND
192.168.0.2 calling 192.168.0.123 -- offhook the phone, dial #123 followed by DIAL softkey or SEND
192.168.0.2: dial #3 and #03 and #003 results in the same call -- call 192.168.0.3
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. 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
Enable DND feature in MENU->Preference, the corresponding icon will be on the right hand side of the
screen. When DND is enabled, the phone will not ring and send 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” softkey during the call.

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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 LCD will show “MUTE” or "Talking to" to indicate whether the microphone is muted.
Call Transfer
GXP2124 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 or
"Transfer" softkey to complete transfer of active call.
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” button then press the LINE key of the
waiting line to transfer the call. Hang up the call after transfer is successful.
3. Auto-Attended Transfer: To make attended transfer in an easy way, users could enable Auto-
Attended Transfer under Web GUI->Advanced Setting Page. To complete attended transfer using
Auto-Attended Transfer mode, follow the steps below:
GXP2124 is in an active call. Press “TRANSFER” button. It will bring up another line using
the current account and put the previous call on hold.
Enter the number and press SEND key to establish the second call. (If pressing "Transfer"
softkey after entering the number, it will do blind transfer instead)
After the second call is established, press “TRANSFER” 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.
5-Way Conferencing
GXP2124 can host conference calls and supports up to 5-way conference calling.
1. Initiate a Conference Call:
Establish a connection with two or more parties.
Press CONF button
Choose the desired line to join the conference by pressing the corresponding LINE button

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Repeat previous two steps for all other parties that would like to join the conference. This
can be done at any time.
2. Hold Conference:
During the conference, pressing "Hold" softkey or a new-established call can put the current
conference call on hold.
When the GXP2124 is on screen with all conferenced-lines on hold, press "ReConf" softkey
to re-establish the conference call.
When the conference call is put on hold, users could also press the separate line key to talk
to each line. However, in this case, the host will have to individually re-join the held lines
back into the conference by pressing CONF button and selecting the line for each line.
3. Cancel Conference:
If after pressing the “CONF” button, a user decides not to conference anyone, press the
current active LINE button or "Cancel" softkey.
This will resume two-way conversation with the current line.
4. 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.
GXP2124 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 5-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.
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.

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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 “#”.
For the 4-way and 5-way traditional conference call, PCMU and PCMA are supported for the codec
being used in the conference.
Voice Messages (Message Waiting Indicator)
A blinking red MWI (Message Waiting Indicator) indicates a message is waiting. Press the Message 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 MENU->Voice Mails; or 2) the message
button; or 3) check each line for stutter tone; or 4) check missed calls using the menu.
Busy Lamp Field
The Multi Purpose Key buttons can be configured for Busy Lamp Field function with a specified account.
When BLF is configured on one of the multi-functional buttons, the Speed Dial function will work when that
line is not in use. Call Pick Up is supported when user presses a flashing BLF key.
Eventlist BLF
The Multi Purpose Key buttons can be configured for eventlist BLF (PBX server must support evenlist BLF
for the phone to use it). Follow the steps below to configure the phone to use eventlist BLF.
Under web GUI->Account setting page, configure "eventlist BLF URI" as set up in the server side.
For example, BLF12345.
Under web GUI->Basic setting page, configure the Muti Purpose Key mode to "eventlist BLF" for the
selected account.
For each eventlist BLF key, enter the userID to be monitored. The userID needs to be configured
under the evenlist BLF group in the server side already.
When eventlist BLF is configured on the Multi Purpose Keys, the Speed Dial function will work when that line
is not in use.
Shared Call Appearance (SCA)
The GXP2124 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