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92-7
Cisco Unified Communications Manager Administration Guide
OL-18611-01
Chapter 92 Trunk Configuration
Trunk Configuration Settings
Media Termination Point
Required
This check box is used to indicate whether a media termination
point (MTP) is used to implement features that H.323 does not
support (such as hold and transfer).
Check the Media Termination Point Required check box if you want
to use a media termination point to implement features. Uncheck the
Media Termination Point Required check box if you do not want to
use a media termination point to implement features.
Use this check box only for H.323 clients and those H.323 devices
that do not support the H.245 Empty Capabilities Set or if you want
media streaming to terminate through a single source.
If you check this check box to require an MTP and one or both
parties are a video endpoint, the call operates as audio only.
Retry Video Call as Audio This check box applies only to video endpoints that receive a call.
For trunks, this check box pertains to calls that are received from
Cisco Unified Communications Manager but not to calls that are
received from the wide-area network (WAN).
By default, the system checks this check box to specify that this
device should immediately retry a video call as an audio call (if it
cannot connect as a video call) prior to sending the call to call
control for rerouting.
If you uncheck this check box, a video call that fails to connect as
video does not try to establish as an audio call. The call then fails to
call control, and call control routes the call via Automatic Alternate
Routing (AAR) and/or route/hunt list.
Wait for Far-End H.245 Terminal
Capability Set
This field applies only to H.323 devices.
This check box specifies that Cisco Unified Communications
Manager waits to receive the far-end H.245 Terminal Capability Set
before it sends its H.245 Terminal Capability Set. By default, the
system checks this check box. To specify that Cisco Unified
Communications Manager should initiate capabilities exchange,
uncheck this check box.
Path Replacement Support If you choose the QSIG option from the Tunneled Protocol
drop-down list box, this check box displays for H.225 trunks,
gatekeeper-controlled trunks, and non-gatekeeper-controlled
trunks. This setting works with QSIG tunneling (Annex M.1) to
ensure that non-H.323 information gets sent on the leg of the call
that uses path replacement.
Note The default setting leaves the check box unchecked. When
you choose the QSIG Tunneled Protocol option, the system
automatically checks the check box.
Table 92-1 Trunk Configuration Settings for H.225 and Intercluster Trunks (continued)
Field Description