Grandstream Networks GXP1610 User Manual page 24

port forwarding or DMZ).
To make a direct IP call, please follow the steps below:
 Press MENU button to bring up main menu;
 Select "Direct IP Call" using the navigation arrow keys;
 Press MENU to enter the Direct IP Call mode;
 Input the 12-digit target IP address (Please see example below);
 Press the "More" softkey to make sure the softkey selection "IP v4" or "IP v6" is correctly selected
depending on your network environment;
 Press "OK" softkey to dial.
For example:
If the target IP address is 192.168.1.60 and the port is 5062 (i.e., 192.168.1.60:5062), input the following:
192*168*1*60#5062. The * key represents the dot (.), the # key represents colon (:). Wait for about 4
seconds and the phone will initiate the call.
Quick IP Call Mode:
The GXP 1610/GXP1620/GXP 1625 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 address. This is possible
only if both phones are under the same LAN/VPN. This simulates a PBX function using the CSMA/CD
without a SIP server. Controlled static IP usage is recommended.
To enable Quick IP Call Mode, go to phone's Web GUI->Settings->Call Features, set "Use Quick IP - c all
mode" to "Yes". Clicking on "Save and Apply" on the bottom of Web GUI page to take the change. To
make Quick IP Call, take the phone off hook first. Then dial #xxx where x is 0-9 and xxx<255. Press # or
SEND and a direct IP call to aaa.bbb.ccc.XXX will be completed. "aaa.bbb.ccc" is from the local IP
address regardless of subnet mask. The number #xx or #x are also valid. The leading 0 is not required
(but it's OK).
For example:
 192.168.0.2 calling 192.168.0.3 -- dial #3 followed by # or "SEND";
 192.168.0.2 calling 192.168.0.23 -- dial #23 followed by # "SEND";
 192.168.0.2 calling 192.168.0.123 -- dial #123 followed by # "SEND";
 192.168.0.2: dial #3 and #03 and #003 results in the same call -- call 192.168.0.3.
Note:
 The # will represent colon ":" in direct IP call rather than SEND key as in normal phone call;
 If you have a SIP server configured, direct IP call still works. If you are using STUN, direct IP call will
Firmware Version 1.0.0.35
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GXP1610/GXP1620/GXP1625
User Guide
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