User's Manual

Firmware Version 1.0.0.11
GXP1610/GXP1620/GXP1625 User
Guide
Page 20 of 31
 Go to phone's Web GUI->Settings->Programmable Keys, configure the Line Key's Key Mode as
Call Return. Select the account to dial from, no Name or User ID has to be set on for Call Return;
 Off hook the phone, or directly press the Call Return key to dial out.
 Via Paging/Intercom.
 Take handset off hook; or
Press Speaker button; or
Press Headset button with headset plugged in; or
Press an available LINE key to activate speaker;
 You shall hear dial tone after off hook;
 Press MENU button to switch the call screen from "Dialing" to "Paging";
 Enter the number;
 Press SEND key or # to dial out.
Note:
 After entering the number, the phone waits for the No Key Entry Timeout (Default timeout is 4
seconds, configurable via Web GUI) before dialing out. Press SEND or # key to override the No Key
Entry Timeout;
 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: