Endpoint Over An H.323 Backbone To H.323 Endpoint, Using Address Book - Polycom MGC Administrator Administrator's Manual

Chapter 7 - Configuring the Gateway
7-32
H.320 Endpoint Over an H.323 Backbone to H.323 Endpoint,
Using Address Book
The H.320 endpoint connects using the following string: [Dial-in No.][Link
DID], for example, 43218071.
Figure 7-23: ISDN-to-IP Over H.323 Backbone Call Flow Using Address Book
Step 1. The H.323 endpoint dials the MCU/gateway prefix and the Link DID.
The digits 4321 represent the Dial-in number defined in the Network
Service Properties, 8071 is the Gateway Link DID taken from the
Gateway Link. The Gateway Link DID contains the Dial-in number
entered in the Network Service (ISDN).
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.323 Session Profile Definition
dialog box. The # is the Speed Dial indicator (Address Book field)
defined in the Gateway Configuration - General Settings. dialog box
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.