IP Phone User Manual
Grandstream Networks, Inc.  GXP1400/1405 User Manual   Page 27 of 36 
   Firmware version: 1.0.1.83  Last Updated: 08/2011 
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. 
Table 16: SIP Account Settings 
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. 
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 GXP1400/1405 to register to (SIP) 
servers of ITSP. 
Name 
SIP service subscriber’s name that is used for Caller ID display. 










