User's Manual

The ip-network-region form for Network Region 1 needs to be similarly configured. Network
region 1 is for phones and servers as well as Session Manager at the central location.
SIP signaling group and trunk group
For this example configuration two SIP signaling groups and two associated trunk groups are
used between Communication Manager and Avaya Aura
®
Session Manager in the example
configuration.
The primary SIP trunk group and its associated signaling group are used for regular call
signaling and media transport to/from SIP phones registered to Avaya Aura
®
Session Manager
including survivable extensions at the branches. The secondary SIP trunk group and its
associated signaling group are used for routing calls from branch phones to native (non-toll)
PSTN destinations.
Note that a single trunk group could be used for both purposes. However, the use of two trunk
groups provides added flexibility to change trunk parameters independently. Tracing call legs
within Communication Manager is also simplified.
Configuring SIP signaling groups
For Communication Manager to act as a Communication Manager Feature Server supporting
survivable extensions, an IMS enabled SIP trunk to Avaya Aura
®
Session Manager is
required.
SIP signaling group and trunk group
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