H.323 Advanced Dial-In - Polycom MGC Manager User Manual

Chapter 2 - Defining Standard Audio Only Conferences and Reservations
2-68
For Gatekeeper functionality and interoperability see the Administrator's
Guide, Chapter 3, Defining a H.323 Network Service.
The MGC Manager determines the conference to which the participant is
assigned according to the participant's alias or IP address defined for the
participant in the conference.
Endpoint IP:
196.123.38.129
Alias: 259
MCU
IP:172.22.138.146
Alias: 146
Conference1
IP Card (1)
Conference2
IP Card (2)
IP:172.22.138.148
Alias: 148
Figure 2-5: H.323 Participant simple dial-in using the IP card alias

H.323 Advanced Dial-in

In this mode, the participant enters a dialing string that is the IP Network
Service Prefix. Usually one IP Network Service is defined for all the IP cards
installed in the MCU. The IP Network Service is registered with the
gatekeeper using a prefix. (The prefix is defined using E.164 format, i.e. 0-9
digits, * and #.) This Network Service prefix is also entered in the IP Network
Service Properties - H.323 dialog box. The Network Service prefix is given to
the participants as the dial-in number. When the participants dial in, the call
arrives at the gatekeeper. The gatekeeper locates the MCU and tries to
allocate a port from the first free IP card. If the resource is available, the
participant is connected and routed to the appropriate conference according to
the participant's IP address/Alias as defined in the Participant Properties
dialog box. If the resource is unavailable on the first IP card, the system looks
for the port on any of the available IP cards, and allocate the resources
Dials 146 Dials 146
LAN
Dials 148
Endpoint IP:
172.123.12.89
Alias: 268
Endpoint IP:
196.123.38.146
Alias: 256
Gatekeeper
146
148