User manual

FIRMWARE VERSION 1.0.5.15 GXP2124 USER MANUAL Page 62 of 71
NAT SETTINGS
If the devices are kept within a private network behind a firewall, we recommend using STUN Server. The
following settings are useful in the STUN Server scenario:
• STUN Server
Enter a STUN Server IP (or FQDN) that you may have, or look up a free public STUN Server on the
internet and enter it on this field. If using Public IP, keep this field blank.
• Use Random Ports
This setting depends on your network settings. When set to "Yes", it will force random generation of
both the local SIP and RTP ports. This is usually necessary when multiple GXPs are behind the same
NAT. If using a Public IP address, set this parameter to "No".
• NAT Traversal
Default setting is "No". Enable the device to use NAT traversal when it is behind firewall on a private
network. Select Keep-Alive, Auto, STUN (with STUN server path configured too) or other option
according to the network setting.
WEATHER UPDATE
To customize GXP2124 to display weather information for the preferred city, users could go to web
GUI->Settings->Web Service page and enter the city code in the following options:
By default the City Code is set to "Automatic", which allows the phone to obtain weather information
based on the IP location detected. To use "Self-Defined City Code" option, please follow the steps below
to obtain the correct city code: