Polycom MGC Administrator, Руководство администратора

Страница: 436 / 584

Chapter 7 - Configuring the Gateway
7-28
The H.323 endpoint connects using the following string: [ local GW prefix ,
first GW Link ID ] * , for example, 7011*.
Figure 7-20: IP-to-IP Over H.320 Backbone Call Flow Using Address Book
Step 1. The H.323 endpoint dials 7011* representing the gateway prefix, the
Gateway Link ID and the Delimiter.
The digits 70 represent the local gateway prefix defined in the
Network Service Properties and 11 is the local Gateway Link ID
retrieved from the Gateway Link.
With the Address Book method, the gateway includes a conversion
table in which each E.164 ID number is assigned a destination alias.
In this method, the destination endpoint details are taken from the
Address Book table.
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.
The Address Book - Endpoint Definition dialog box contains the
Destination Identifier whose configuration is set to H.323 endpoint
and is defined in the H.323 Endpoint Parameters settings. The H.323
Endpoint Parameters settings define the Alias Type, Alias Name and
IP Address.