Grandstream Networks GXP1450 User manual

GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL
Grandstream Networks, Inc.
GXP2120/GXP2110/GXP2100/GXP14xx
SIP Enterprise Phones

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 2 of 80
GXP2120/GXP2110/GXP2100/GXP14xx User Manual
Index
GUI INTERFACE EXAMPLES....................................................................5
GNU GPL INFORMATION..........................................................................6
CHANGE LOG ...........................................................................................7
FIRMWARE VERSION 1.0.5.58............................................................................................................7
FIRMWARE VERSION 1.0.5.32............................................................................................................7
FIRMWARE VERSION 1.0.5.26............................................................................................................7
FIRMWARE VERSION 1.0.5.24............................................................................................................7
FIRMWARE VERSION 1.0.5.15............................................................................................................8
FIRMWARE VERSION 1.0.4.23............................................................................................................8
FIRMWARE VERSION 1.0.4.9..............................................................................................................8
WELCOME...............................................................................................10
PRODUCT OVERVIEW............................................................................11
FEATURE HIGHTLIGHTS...................................................................................................................11
GXP2120/GXP2110/GXP2100/GXP14xx TECHNICAL SPECIFICATIONS........................................12
INSTALLATION........................................................................................16
EQUIPMENT PACKAGING .................................................................................................................16
CONNECTING YOUR PHONE ...........................................................................................................16
GXP2120/GXP2110 EXTENSION MODULE.......................................................................................17
SAFETY COMPLIANCES....................................................................................................................19
WARRANTY.........................................................................................................................................19
USING THE GXP2120/GXP2110/GXP2100/GXP14xx.............................20
GETTING FAMILAR WITH THE LCD..................................................................................................20
GETTING FAMILAR WITH THE KEYPAD...........................................................................................26
MAKING PHONE CALLS.....................................................................................................................27
HANDSET, SPEAKER AND HEADSET MODE ...........................................................................27
MULTIPLE SIP ACCOUNTS AND LINES.....................................................................................27
COMPLETING CALLS..................................................................................................................28
MAKING CALLS USING IP ADDRESSES...................................................................................30
ANSWERING PHONE CALLS ............................................................................................................31

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 3 of 80
RECEIVING CALLS......................................................................................................................31
DO NOT DISTURB.......................................................................................................................31
DURING A PHONE CALL....................................................................................................................32
CALL WAITING/CALL HOLD .......................................................................................................32
MUTE............................................................................................................................................32
CALL TRANSFER ........................................................................................................................32
5-WAY CONFERENCING/3-WAY CONFERENCING..................................................................33
VOICE MESSAGES (MESSAGE WAITING INDICATOR)...........................................................35
SHARED CALL APPEARANCE (SCA) ........................................................................................36
CALL FEATURES................................................................................................................................36
CUSTOMIZED LCD SCREEN & XML.................................................................................................38
CONFIGURATION GUIDE........................................................................39
CONFIGURATION VIA KEYPAD.........................................................................................................39
CONFIGURATION VIA WEB BROWSER ...........................................................................................44
DEFINITIONS ......................................................................................................................................45
STATUS PAGE DEFINITIONS .....................................................................................................45
ACCOUNTS PAGE DEFINITIONS...............................................................................................46
SETTINGS PAGE DEFINITIONS.................................................................................................55
NETWORK PAGE DEFINITIONS.................................................................................................63
MAINTENANCE PAGE DEFINITIONS.........................................................................................65
PHONEBOOK PAGE DEFINITIONS............................................................................................68
NAT SETTINGS...................................................................................................................................70
WEATHER UPDATE............................................................................................................................71
PUBLIC MODE....................................................................................................................................72
EDITING CONTACTS AND CLICK-TO-DIAL......................................................................................73
UPGRADING AND PROVISIONING ........................................................76
UPGRADE VIA KEYPAD MENU .........................................................................................................76
UPGRAGE VIAWEB GUI....................................................................................................................76
NO LOCAL TFTP/HTTP SERVERS ....................................................................................................77
CONFIGURATION FILE DOWNLOAD................................................................................................77
RESTORE FACTORY DEFAULT SETTINGS...........................................79
EXPERIENCING THE GXP2120/GXP2110/GXP2100/GXP14xx..............80

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 4 of 80
Table of Tables
GXP2120/GXP2110/GXP2100/GXP14xx User Manual
Table 1: GXP2120/GXP2110/GXP2100/GXP14xx FEATURES IN A GLANCE..........................................11
Table 2: GXP2120/GXP2110/GXP2100/GXP14xx COMPARISON GUIDE................................................12
Table 3: GXP2120/GXP2110/GXP2100/GXP14xx TECHNICAL SPECIFICATIONS .................................12
Table 4: GXP2120/GXP2110/GXP2100/GXP14xx EQUIPMENT PACKAGING.........................................16
Table 5: GXP2120/GXP2110/GXP2100/GXP14xx CONNECTORS...........................................................16
Table 6: LCD DISPLAY DEFINITIONS........................................................................................................20
Table 7: GXP2120/GXP2110/GXP2100/1450 LCD ICONS........................................................................23
Table 8: GXP140x LCD ICONS ..................................................................................................................25
Table 9: KEYPAD DEFINITIONS ................................................................................................................26
Table 10: CALL FEATURES........................................................................................................................36
Table 11: CONFIGURATION MENU ...........................................................................................................39
Table of Figures
GXP2120/GXP2110/GXP2100/GXP14xx User Manual
Figure 1: GXP2120/GXP2110/GXP2100/GXP14xx Pin-out .......................................................................17
Figure 2: GXP2120/GXP2110 EXT Board Connection...............................................................................18
Figure 3: Keypad MENU Flow.....................................................................................................................43
Figure 4: Web GUI - Phonebook->Contacts ...............................................................................................74
Figure 5: Click-to-Dial..................................................................................................................................74

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 5 of 80
GUI INTERFACE EXAMPLES
http://www.grandstream.com/products/gxp_series/general/documents/gxp21xx_gui.zip
1. Screenshot of Login Page
2. Screenshots of Status Pages
3. Screenshots of Accounts Pages
4. Screenshots of Settings Pages
5. Screenshots of Network Pages
6. Screenshots of Maintenance Pages
7. Screenshots of Phonebook Pages

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 6 of 80
GNU GPL INFORMATION
GXP2120/GXP2110/GXP2100/GXP14xx firmware contains third-party software licensed under the GNU
General Public License (GPL). Grandstream uses software under the specific terms of the GPL. Please
see the GNU General Public License (GPL) for the exact terms and conditions of the license.
Grandstream GNU GPL related source code can be downloaded from Grandstream web site from:
http://www.grandstream.com/support/faq/gnu_gpl.

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 7 of 80
CHANGE LOG
This section documents significant changes from previous versions of user manuals for
GXP2120/GXP2110/GXP2100/GXP14xx. Only major new features or major document updates are listed
here. Minor updates for corrections or editing are not documented here.
FIRMWARE VERSION 1.0.5.58
Added “3CX Auto Provision” under Maintenance. [MAINTENANCE PAGE DEFINITIONS]
Added “Second Dial Tone” under Settings. [SETTINGS PAGE DEFINITIONS]
Added “Sort Phonebook by”under Phonebook Management. [PHONEBOOK PAGE DEFINITIONS]
Added “Public Mode Login Expiration”under Settings. [SETTINGS PAGE DEFINITIONS]
Added “Hold Method”under Account setting. [ACCOUNTS PAGE DEFINITIONS]
Added “Crypto Life Time”under Account setting.[ACCOUNTS PAGE DEFINITIONS]
Added “UCM Connection”under LCD Main menu.[CONFIGURATION VIA KEYPAD]
FIRMWARE VERSION 1.0.5.32
Added “Web Access Mode”under Security setting. [SECURITY]
Replaced “Disable Telnet”under Web Access by “Disable SSH”under Security setting page.
[SECURITY]
FIRMWARE VERSION 1.0.5.26
Updated “Use Phonebook Key for LDAP Search” under LDAP settings to “Phonebook Key function”
under Phonebook Management settings. [PHONEBOOK PAGE DEFINATION]
FIRMWARE VERSION 1.0.5.24
Updated TFTP server download link for 1.0.5.24, [NO LOCAL TFTP/HTTP SERVERS]
Added “Enable Idle Mute” feature in Call Features. [CALL FEATURES]
Added “Enable LLDP” feature under Network Advanced Settings.[NETWORK PAGE DEFINITIONS]

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 8 of 80
FIRMWARE VERSION 1.0.5.15
Updated Web GUI interface examples with new screenshots for 1.0.5.15. [GUI INTERFACE
EXAMPLES]
Merged GXP140x user manual content in this manual.
Add pin-out information. [Figure 1: GXP2120/GXP2110/GXP2100/GXP14xx Pin-out]
Updated Auto Attended Transfer information. [CALL TRANSFER]
Modified Public Mode information. [PUBLIC MODE]
Updated Click-To-Dial feature information. [EDITING CONTACTS AND CLICK-TO-DIAL]
Updated Keypad MENU options and Keypad configuration flow. [CONFIGURATION VIA KEYPAD]
Updated Web GUI options. Added options "Music On Hold URI", "Authenticate Incoming INVITE",
"Click-To-Dial Feature", "Call-Waiting Tone Gain", "Accept Incoming SIP from Proxy Only", "Caller ID
Display", "Broadsoft Call Center", "Hoteling Event", "Call Center Status", "PUBLISH to Call Center",
"Use First Matching Vocoder in 200OK SDP", "DND Call Feature On" and "DND Call Feature Off".
[DEFINITIONS]
FIRMWARE VERSION 1.0.4.23
Updated XML Application documentation link. [CUSTOMIZED LCD SCREEN & XML]
Added "Use Privacy Header" and "Use P-Preferred-Identity Header" options in web GUI. [ACCOUNTS
PAGE DEFINITIONS]
Added Date Display Format options in web GUI. [SETTINGS PAGE]
Added "Use Phonebook Key for LDAP Search" option in web GUI. [MAINTENANCE PAGE]
Added customize city code information for weather update feature. [WEATHER UPDATE]
Updated generic config file cfg.xml information. [CONFIGURATION FILE DOWNLOAD]
FIRMWARE VERSION 1.0.4.9
Added instructions for connecting the phone. [CONNECTING YOUR PHONE]
Updated Keypad MENU options and Keypad configuration flow. [CONFIGURATION VIA KEYPAD]
Added Line Key options Speed Dial, Dial DTMF, Call Return, Transfer, Voice Mail, Intercom, Call Park,
LDAP Search, and etc. [SETTINGS PAGE]
Added Multi Purpose Key options Voice Mail, Call Park, LDAP Search, and etc. [SETTINGS PAGE]
Added IPv6 configuration options. [SETTINGS PAGE]
Added LDAP options information. [MAINTENANCE PAGE]
Added Public Mode information for hot desking feature. [PUBLIC MODE]

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 9 of 80
Added NAT setting information. [NAT SETTINGS]
Added Matching Incoming Caller ID function in Account Setting. [ACCOUNTS PAGE DEFINITIONS]
Added Editing Contacts and Click-to-Dial information. [EDITING CONTACTS AND CLICK-TO-DIAL]
Added GNU GPL information. [GNU GPL INFORMATION]
Added Change Log for this user manual. [CHANGE LOG]
Merging GXP1450 User Manual content with GXP2120/GXP2110/GXP2100 User Manual.

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 10 of 80
WELCOME
Thank you for purchasing Grandstream GXP2120/GXP2110/GXP2100/GXP14xx SIP Enterprise Phones.
Your Grandstream GXP2120/GXP2110/GXP2100/GXP14xx Enterprise IP phone is feature-enriched,
sophisticated, yet simple to use. It 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.
The GXP2120/GXP2110/GXP2100/GXP14xx supports a broad range of codecs, security protection, PoE,
dual 10/100Mbps Ethernet ports, along with customizable XML provisioning and application
features. Users can expect superior audio quality using the new high definition handset, hands-free
speakerphone, or headset. Also, it can support up to 5-way conferencing for
GXP2120/GXP2110/GXP2100 and 3-way conferencing for GXP14xx, multi-languages and dual-color
LEDs. The GXP2120/GXP2110/GXP2110 supports presence and Busy Lamp Field (BLF) in the Multi
Purpose Keys as well. It presents a large easy-to-read backlit graphical display along with multiple XML
keys to further enhance the user experience. Additionally, the GXP2120/2110 is expandable with one to
two expansion modules.
The GXP2120/GXP2110/GXP2100/GXP14xx is a perfect choice for enterprise users looking for a high
quality, feature rich multi-line IP phone with the best values.
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 GXP2120/GXP2110/GXP2100/GXP14xx 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 here:
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.

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 11 of 80
PRODUCT OVERVIEW
FEATURE HIGHTLIGHTS
Table 1: GXP2120/GXP2110/GXP2100/GXP14xx FEATURES IN A GLANCE
GXP2120
6 lines
7 programmable Multi Purpose Keys
4 XML programmable soft keys
XMLApplication
XML Idle Screen Customization
GXP2110
4 lines
18 programmable Multi Purpose Keys
3 XML programmable soft keys
XMLApplication
XML Idle Screen Customization
GXP2100
4 lines
7 programmable Multi Purpose Keys
3 XML programmable soft keys
XMLApplication
XML Idle Screen Customization
GXP1450
2 lines
3 XML programmable soft keys
XML Idle Screen Customization
GXP140x
2 lines
3 XML programmable soft keys
XML Idle Screen Customization

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 12 of 80
Table 2: GXP2120/GXP2110/GXP2100/GXP14xx COMPARISON GUIDE
Features
GXP2120
GXP2110
GXP2100
GXP1450
GXP140x
LCD Display
320x160 pixel
240x120 pixel
180x90 pixel
180x60 pixel
128x40 pixel
LCD Backlight
Yes
Yes
Yes
Yes
No
Number of
Lines
6
4
4
2
2
Programmable
Hard Keys
7
18
7
N/A
N/A
Programmable
Soft Keys
4
3
3
3
3
Extension
Module
Yes,
up to 2 EXT Boards,
56 nodes each
Yes,
up to 2 EXT Boards,
56 nodes each
N/A
N/A
N/A
GXP2120/GXP2110/GXP2100/GXP14xx TECHNICAL SPECIFICATIONS
Table 3: GXP2120/GXP2110/GXP2100/GXP14xx TECHNICAL SPECIFICATIONS
Protocols and
Standards
SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS (A
record, SRV, NAPTR), DHCP, PPPoE, TELNET, TFTP, NTP, STUN, SIMPLE, TR-069,
802.1X, LLDP, LLDP-MED, LDAP, IPv6, TLS, SRTP
SIP PUBLISH method (RFC3903), SIP Presence Package (RFC3856, 3863) for use of
MPKs, SIP Dialog Package (RFC4235), SIP Message method (RFC3428)
Note:
MPKs are not applicable to GXP14xx.
Network
Interfaces
Dual switched 10/100Mbps port
Integrated PoE for GXP2120/GXP2110/GXP2100/GXP1450/GXP1405

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 13 of 80
Graphic Display
LCD size and backlight:
GXP2120
GXP2110
GXP2100
GXP1450
GXP140x
320x160 pixel
240x120 pixel
180x90 pixel
180x60 pixel
128x40 pixel
Backlight
Backlight
Backlight
Backlight
No Backlight
Feature Keys
Feature key comparison:
GXP2120
GXP2110
GXP2100
GXP1450
GXP140x
HOLD
Yes
Yes
Yes
Yes
Yes
SPEAKER
Yes
Yes
Yes
Yes
Yes
SEND
Yes
Yes
Yes
Yes
Yes
TRANSFER
Yes
Yes
Yes
Yes
Yes
CONF
Yes
Yes
Yes
Yes
Yes
MUTE
Yes
Yes
Yes
Idle: DND
Talk: MUTE
Idle: DND
Talk: MUTE
DND
Yes
Yes
No
HEADSET
Yes
Yes
Yes
Yes
Yes
INTERCOM
Yes
Yes
Yes
No
No
PHONEBOOK
Yes
Yes
Yes
Yes
No
MSG
Yes
Yes
Yes
Yes
No
MENU
Yes
Yes
Yes
Yes
Yes
NAVIGATION
Yes
Yes
Yes
Yes
Yes
Note:
GXP14xx uses the same key for DND/MUTE by default. When the phone is in idle, the
key will be used as DND. When the phone is in talking status, the key will be used as
MUTE.
Voice Codec
Support for G.723.1, G.729A/B, G.711u/a, G.726-32, G.722 (wide-band), iLBC, in-band
and out-of-band DTMF (in audio, RFC2833, SIP INFO)
Telephony
Features
Hold, transfer, forward, up to 5-way conference for GXP2120/GXP2110/GXP2100, up to
3-way conference for GXP14xx, call park, pickup, shared-call-appearance
(SCA)/bridged-line-appearance (BLA), downloadable phone book (XML, LDAP, up to
2000 items for GXP2120/GXP2110/GXP2100, up to 500 items for GXP14xx), call waiting,

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 14 of 80
call log (up to 2000 records for GXP2120/GXP2110/GXP2100, up to 500 records for
GXP14xx), XML customization of idle screen, off-hook auto dial, auto answer,
click-to-dial, flexible dial plan, hot desking, personalized music ringtones, server
redundancy and fail-over
HD Audio
Yes, HD handset with support for wideband audio
Headset Jack
For GXP2120/GXP2110/GXP2100/1450: 2.5mm and RJ9 headset jack;
For GXP140x: RJ9 headset jack only
Base Stand
Yes, 2-angle positions available
Wall Mountable
Yes
EXT Board
GXP2120/GXP2110 only
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,
256-bit AES encrypted configuration file, TLS, SRTP, 802.1X media access control
Multi-language
English, German, Italian, French, Spanish, Portuguese, Russian, Croatian, Simplified
Chinese, traditional Chinese, Korean, Japanese and etc
Upgrade and
Provisioning
Firmware upgrade via TFTP/HTTP/HTTPS, mass provisioning using TR-069 or AES
encrypted XML configuration file
Power and
Green Energy
Efficiency
Universal power adapter:
Input: 100-240VAC 50-60Hz; Output: 5VDC, 800mA
(GXP2100 only) Input: 100-240VAC 50-60Hz; Output: 5VDC, 800mAor 5VDC, 1200mA
Integrated Power-over-Ethernet (Built-in auto-sensing: Cisco and IEEE 802.3af standard)
Max power consumption 2.5W (power adapter) or 3W (PoE)
Physical
GXP2120
GXP2110
GXP2100
GXP1450
GXP140x
Dimension
251mm(W)
202mm(L)
77mm(H)
252mm (W)
210mm (L)
78mm (H)
222mm (W)
210mm (L)
93mm (H)
186mm (W)
210mm (L)
81mm (H)
186mm (W)
210mm (L)
81mm (H)
Unit
Weight
1.08KG
1.08KG
0.98KG
0.8KG
0.7KG
Package
Weight
1.78KG
1.78KG
1.63KG
1.3KG
1.1KG
Operating
Temperature
and Humidity
32-104 oF / 0-40 oC, 10-90% (non-condensing)

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 15 of 80
Package
Content
GXP2120/GXP2110/GXP2100/GXP14xx phone, handset with cord, base stand, wall
mount spacers, 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, EN60950-1; AS/NZS CISPR 22 Class B, AS/NZS CISPR 24, RoHS; UL
60950 (power adapter)

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 16 of 80
INSTALLATION
EQUIPMENT PACKAGING
Table 4: GXP2120/GXP2110/GXP2100/GXP14xx EQUIPMENT PACKAGING
Main Case
Yes
1
Handset
Yes
1
Phone Cord
Yes
1
Power Adaptor
Yes
1
Ethernet Cable
Yes
1
Phone Stand
Yes
2 for GXP2120/GXP2110/GXP2100/1450;
1 for GXP140x
Wall Mount Spacers
Yes
2
Quick Start Guide
Yes
1
CONNECTING YOUR PHONE
Table 5: GXP2120/GXP2110/GXP2100/GXP14xx CONNECTORS
Handset Port
RJ9
Headset Port
2.5mm and RJ9 for GXP2120/GXP2110/GXP2100/1450; RJ9 for GXP140x
LAN Port
10/100Mbps RJ-45 port connecting to Ethernet;
Integrated PoE for GXP2120/GXP2110/GXP2100/GXP1450/GXP1405
PC Port
10/100Mbps RJ-45 port for PC connection
EXT Port
Extension module connection port for GXP2120/GXP2110
Power Jack
5V DC Power connector port
To set up the GXP2120/GXP2110/GXP2100/GXP14xx, follow the steps below:
1. Attach the phone stand or wall mount to the back of the phone where there are slots;
2. Connect the handset and main phone case with the phone cord;
3. Connect the LAN port of the phone to the RJ45 socket of a hub/switch or a router (LAN side of the
router) using the Ethernet cable;
4. Connect the 5V DC output plug to the power jack on the phone; plug the power adapter into an
electrical outlet. If PoE switch is used in step 3 (not applicable to GXP1400), this step could be
skipped;

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 17 of 80
5. The LCD will display provisioning or firmware upgrade information. Before continuing, please wait for
the date/time display to show up;
6. Using the keypad configuration menu or phone's embedded web server (Web GUI) by entering the IP
address in web browser, you can further configure the phone.
Please see below the pin-out information for GXP2120/GXP2110/GXP2100/14xx.
Figure 1: GXP2120/GXP2110/GXP2100/GXP14xx Pin-out
GXP2120/GXP2110 EXTENSION MODULE
GXP2120/2110 supports two EXT boards, providing up to 112 additional programmable extensions. Each
GXP EXT board has 56 multi-purpose keys, dual color LEDs (red/green) and support BLF (Busy Lamp
Field) and Presence.
GXP2120/2110 EXT board package contains:
1 GXP EXT board
2 connection cables
GXP2120/GXP2110/GXP2100/GXP14xx
Handset/Headset Jack
GXP2120/GXP2110/GXP2100/GXP14xx
Handset/Headset Plug
GXP2120/GXP2110/GXP2100/GXP1450
2.5mm Headset Jack
GXP2120/GXP2110/GXP2100/14xx
Power Jack

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 18 of 80
GXP2120 with 2 GXP EXT Boards
GXP EXT Board
Reverse side of connection with connection
plate
GXP2120/2110 has a special port on
the back
Figure 2: GXP2120/GXP2110 EXT Board Connection
Connect the first GXP EXT board to the GXP2120/2110 using the connection cable found in the GXP EXT
board package. The first GXP EXT board draws power directly from the phone. Connect the second GXP
EXT board using the connection plate and the connection cable. The GXP2120/2110 will automatically
reboot and power up the GXP EXT boards. Grandstream recommends, though not required, to use a
separate power supply with the second GXP EXT board.
Note:
Should your system lose power, please unplug your devices and power up the GXP2120/2110 first.
EXT board for GXP2120/2110 is the same for GXP2020/2010 models. However, GXP2120/2110 uses
a different-shaped connector for the special port (as shown above). Connection cables will be included
with the EXT board.
EXT board for GXP2120/2110 does not support hot-swap. Once connected, user should reboot the
phone to ensure the setup will work correctly.
GXP2120/2110 can drive 2 EXT boards. Independent power adapters are not needed for the EXT
board.

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 19 of 80
SAFETY COMPLIANCES
The GXP2120/GXP2110/GXP2100/GXP14xx phone complies with FCC/CE and various safety standards.
The GXP2120/GXP2110/GXP2100/GXP14xx power adapter is compliant with the UL standard. Use the
universal power adapter provided with the GXP2120/GXP2110/GXP2100/GXP14xx package only. The
manufacturer’s warranty does not cover damages to the phone caused by unsupported power adapters.
WARRANTY
If the GXP2120/GXP2110/GXP2100/GXP14xx phone was purchased from a reseller, please contact the
company where the phone was purchased for replacement, repair or refund. If the phone was purchased
directly from Grandstream, contact the Grandstream Support for a RMA (Return Materials Authorization)
number before the product is returned. Grandstream reserves the right to remedy warranty policy without
prior notification.
Warning:
Use the power adapter provided with the phone. Do not use a different power adapter as this may damage
the phone. This type of damage is not covered under warranty.

FIRMWARE VERSION 1.0.5.58 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 20 of 80
USING THE GXP2120/GXP2110/GXP2100/GXP14xx
GETTING FAMILAR WITH THE LCD
GXP2120/GXP2110/GXP2100/GXP14xx has a dynamic and customizable screen. The screen displays
differently depending on whether the phone is idle or in use (active). The following table describes the
items displayed on the GXP2120/GXP2110/GXP2100/GXP14xx idle screen.
Table 6: LCD DISPLAY DEFINITIONS
DATE AND TIME
Displays the current date and time. It can be synchronized with
Internet time servers.
LOGO
Displays company logo/name. This logo/name can be customized via
xml screen customization. The maximum size for logo name string is 26
characters in English (approximately).
Note:
For GXP140x, only strings can be used for logo name due to LCD
limitation.
NETWORK STATUS
Shows the status of network in the middle of the screen. It will indicate
whether the network is down or starting.
STATUS ICON
Shows the status of the phone for registration status, call features and
etc, using icons as shown in the next table.
LINE STATUS INDICATOR
Displays the name of the account that is in use.
Note:
Line Status Indicator is NOT applicable to GXP140x.
SOFTKEYS in Idle Screen
The softkeys are context sensitive and will change depending on the
status of the phone. Typical functions assigned to softkeys are:
SwitchSCR/NEXTSCR
Toggles between different idle screens. For example, for
GXP2120/GXP2110/GXP2100, pressing SwitchSCR will toggle
among default idle screen, weather information, stock information
and currency information; for GXP140x, pressing NEXTSCR will