Handling Conference Calls; Related H.323 Documentation - 3Com NBX 100 Administrator's Manual

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PPENDIX ONNE
Handling
Conference Calls
Related H.323
Documentation
X H.323 G
TIONS ATEWAY
To configure a H.323 line port:
1 In the NBX NetSet - Main Menu window, click Device Configuration.
2 Click the Line Card Ports tab.
3 Select an H.323 port. This port has the default setting from the Auto
Discovery installation process.
4 Click Modify.
5 In the AutoExt field, enter the required extension number.
CAUTION: Do not route an H.323 port directly to another line port.
Routing an H.323 call to a PSTN line, from the Internet, is dangerous
because it would allow anyone to make long distance toll calls through
the Call Processor — with no accountability.
6 Click OK.
You can include gateway port connections in local conference calls along
with PSTN line connections. However, ConneXtions does not support
conferences at the H.323 level, so, if two or more of the conferring
parties are at a remote NBX system, each requires a separate port
connection. This characteristic determines who can initiate the
conference call.
A four-way conference call with three people at one NBX site and one
person at the other site uses one H.323 port if it is set up from the side
with three people. Otherwise, it needs three ports.
Here are some useful sources of information on the H.323 standard:
Web Sites
http://www.packetizer.com/iptel/h323/
http://www.itu.int/itudoc/itu-t/rec/h/
Book
IP Telephony: Packet-Based Multimedia Communications Systems —
Olivier Hersent, David Gurle, Jean-Pierre Petit (1999).