Polycom MGC Administrator, Administrator'S Manual

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Chapter 7 - Configuring the Gateway
7-26
number. 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 90#42. The digits 90 represent the remote gateway (H.323)
prefix taken from the local Gateway Link. The Remote Gateway
H.323 profile ID, 42, represents the configured Session Profile (ID
E.164) parameter defined in the
To H.320 Session Profile Definition
dialog box. The # is the Speed Dial indicator (Address Book field)
defined in the
Gateway Configuration - General Setting s dialog box.
Step 3. The remote gateway retrieves the endpoint ISDN number from the
Address Book table and connects the call.
H.323 Endpoint Over an H.323 Backbone to H.323 Endpoint,
Using the Address Book
In the Address Book method, the gateway includes a conversion table in
which each E.164 ID number is assigned a destination alias or IP address. In
this method, the destination endpoint details are taken from the Address Book
table. It is used when an internal IP endpoint calls an external IP address.
The H.323 endpoint connects using the following string: [ local GW prefix ,
first GW Link ID ] * [ Alias ], for example, 7011*1234.
Figure 7-19: IP-to-IP Over H.323 Backbone Call Flow Using Address Book