Grandstream GXP21xx Series User Manual - Manual (Page 33)

FIRMWARE VERSION 1.0.8.4 GXP2120/GXP2110/GXP2100/GXP14xx USER MANUAL Page 31 of 85
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:
 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 "IPv4" or "IPv6" 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 GXP2120/GXP2110/GXP2100/GXP14xx also supports Quick IP Call mode. This enables the phone to