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Chapter 4 - Setting Up Conferences
4-94
SIP Connections
Figure 4-8: Typical SIP Conferencing Layout
Dial-in Scenario—SIP Environment
Participants can dial in to an Entry Queue, or directly to a conference or to a
Meeting Room. Using an Entry Queue minimizes the number of conferences
that require registration with the SIP server, as it can use a single URI address
or a limited number of addresses for all the dial-in connections.
A new conference reservation or Entry Queue is defined. The conference or
the Entry Queue registers with the SIP proxy. The SIP participant registers
with the registrar, and provides authentication if required (non-trusted mode).
Usually, for SIP conferencing, an Ad Hoc Entry Queue is used. In this
scenario, the first participant dials the Entry Queue and creates a new
conference, while the other conference participants dial directly to the
conference using the conference name or numeric ID. The SIP participant
uses the Entry Queue URI to access the Entry Queue.
The Entry Queue URI is dialed in the format:
Entry Queue name@domain name.
DNS server
MCU
SIP server
SIP UA
SIP UA