Polycom MGC Administrator, Administrator'S Manual

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Chapter 7 - Configuring the Gateway
7-30
gateway using pre-configured numbers. It is used when an local
H.323 endpoint calls the remote H.323 endpoint.
Step 2. The local gateway automatically dials the remote gateway using the
string 80208000. 8020 is the H.320 Gateway Parameter (access PRI
number) taken from the Remote Gateway Definition and 8000 the
Remote Gateway DID number taken from the Gateway Link. The
digits 8000 represent the destination endpoint alias in H.323 format.
Step 3. The Remote Gateway Definition contains the Alias H.323 of the
remote endpoint and locates the phone number 8000 as defined in the
Remote Gateway DID. Using the Dial string the remote gateway
finds the entry and dials the endpoint.
H.323 Endpoint Over an H.320 Backbone to H.323 Endpoint,
Using Forwarding Services
The H.323 endpoint connects using the following string: [ local GW prefix ,
first GW Link ID ] * [ Alias ], for example, 7011*1234.
Figure 7-22: IP-to-IP Over H.320 Backbone Call Flow Using Forwarding Service
Step 1. The H.323 endpoint dials 7011*1234 representing the gateway prefix,
the Gateways Link ID, the Delimiter and Alias.
The digits 70 represent the local gateway prefix defined in the
Network Service Properties and 11 is the local Gateway Link ID