User Guide

44 Voice Gateway / Pocket Voice Gateway
Voice Gateway / Pocket Voice Gateway products can be operated in two
modes: H.323 voice gateway and MGCP voice gateway. The system re-
quirements are different in H.323 and MGCP environments.
7.1 H.323 Notes
H.323 is a peer-to-peer connection pro-
tocol for VoIP. In an H.323 environment,
you can make a phone call to the desti-
nation directly, or though an H.323
gatekeeper and/or a trunk gateway. Then,
you can make a phone call by either an
IP address or a telephone number (E.164
number). Therefore, in our configuration,
users have to setup the strategy to make
a phone call. The criterion follows the
rule:
Make an H.323 phone call to other H.323 VoIP terminal (if H.323 firmware
exists)
1. Call to pure VoIP (non-E.164 telephone) terminal
a. Pick up phone. After hearing a dial tone, dial the IP address of the
peer terminal. Here you have to use star (*) as dot (.), and then press
hash (#) to end. For example, if the IP address of the peer terminal is
192.168.100.2 then you have to press 192*168*100*2#
2. Call to E.164-addressed telephone terminal
a. In this environment, you have to connect to an H.323 Gatekeeper or
Gateway to support E.164 address or IP Address.
b. You can use one of the user interfaces to configure the IP address of
the H.323 Gatekeeper or Gateway. Refer to Chapter 5 for the con-
figuration interface.
After you setup the IP address of the Gatekeeper and phone number of each
line, you can dial to the peer terminal as in a standard telephone. For ex-
ample, if you want to dial to 7123456 then you just press 7123456# to make
this phone call.
GK?
GW?
No?
Yes?
Dial IP only
No?
Dial IP or E.164
through GW
Dial IP or E.164
through GK
Yes?
7. System Operation