User Manual

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GXP16XX User Guide
• If digits have been entered after handset is off hook, the SEND key will works as SEND instead of
REDIAL.
• By default, # can be used as SEND to dial the number out. Users could disable it by setting "User # as
Dial Key" to "No" from Web GUI->Account X->Call Settings.
• For Paging/Intercom, if the SIP Server/PBX supports the feature and has Paging/Intercom feature code
set up already, users do not necessarily need toggle to paging mode in the call screen. Simply dial the
feature code with extension as a normal call.
• When dial out via paging, user can see the “call-info” header contains “answer-after=0” and “the “alert-
info” header contains “info=alert-autoanswer;delay=0” in the outgoing INVITE.
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 the 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 the steps below:
1. Press MENU button to bring up main menu.
2. Select "Direct IP Call" using the navigation arrow keys.
3. Press MENU to enter the Direct IP Call mode.
4. Input the 12-digit target IP address (Please see example below).
5. Press the "More" softkey to make sure the softkey selection "IPv4" or "IPv6" is correctly selected
depending on your network environment.
6. 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 GXP1610/GXP1615/GXP1620/GXP1625/GXP1628/GXP1630 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