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Cisco Unified Communications Manager Administration Guide
OL-18611-01
Chapter 92 Trunk Configuration
Trunk Configuration Settings
AAR Group Choose the automated alternate routing (AAR) group for this
device. The AAR group provides the prefix digits that are used to
route calls that are otherwise blocked due to insufficient bandwidth.
An AAR group setting of None specifies that no rerouting of
blocked calls will be attempted.
Tunneled Protocol This drop-down list box displays for H.225 trunks,
gatekeeper-controlled trunks, and non-gatekeeper-controlled
trunks.
Choose the QSIG option if you want to use trunks to transport
(tunnel) non-H.323 protocol information in H.323 signaling
messages from Cisco Unified Communications Manager to other
Annex M.1-compliant H.323 PINXs. QSIG tunneling supports the
following features: Call Completion, Call Diversion, Call Transfer,
Identification Services, and Message Waiting Indication.
QSIG Variant To display the options in the QSIG Variant drop-down list box,
choose QSIG from the Tunneled Protocol drop-down list box.
This parameter specifies the protocol profile that is sent in outbound
QSIG facility information elements.
From the drop-down list box, choose one of the following options:
• No Changes— Default. Keep this parameter set to the default
value unless a Cisco support engineer instructs otherwise.
• Not Selected
• ECMA—Choose for ECMA PBXs that use Protocol Profile
0x91.
• ISO—Choose for PBXs that use Protocol Profile 0x9F.
For more information, see the following information:
• Be aware that the QSIG Variant can also be defined as a
clusterwide parameter. For more information, refer to
Chapter 25, “Service Parameters Configuration.”
• For information on QSIG support with Cisco Unified
Communications Manager, refer to
“Q.Signaling (QSIG)” in
the “Understanding IP Telephony Protocols” chapter of the
Cisco Unified Communications Manager System Guide.
Table 92-1 Trunk Configuration Settings for H.225 and Intercluster Trunks (continued)
Field Description