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Cisco Unified Communications Manager Administration Guide
OL-18611-01
Chapter 92 Trunk Configuration
Trunk Configuration Settings
SUBSCRIBE Calling Search
Space
Supported with the Presence feature, the SUBSCRIBE calling
search space determines how Cisco Unified Communications
Manager routes presence requests from the
device/server/application that connects to the SIP trunk. This
setting allows you to apply a calling search space separate from the
call-processing search space for presence (SUBSCRIBE) requests
for the SIP trunk.
From the drop-down list box, choose the SUBSCRIBE calling
search space to use for presence requests for the SIP trunk. All
calling search spaces that you configure in Cisco Unified
Communications Manager Administration display in the
SUBSCRIBE Calling Search Space drop-down list box.
If you do not select a different calling search space for the SIP trunk
from the drop-down list, the SUBSCRIBE calling search space
defaults to None.
To configure a SUBSCRIBE calling search space specifically for
this purpose, you configure a calling search space as you do all
calling search spaces. For information on how to configure a calling
search space, see the
“Calling Search Space Configuration” section
on page 53-1.
SIP Profile From the drop-down list box, choose the SIP profile that is to be
used for this SIP trunk.
The default value for SIP Profile specifies None Selected.
DTMF Signaling Method Choose from the following options:
No Preference (default)—Cisco Unified Communications Manager
will pick the DTMF method to negotiate DTMF, so the call does not
require an MTP. If Cisco Unified Communications Manager has no
choice but to allocate an MTP (if the Media Termination Point
Required check box is checked), SIP trunk will negotiate DTMF to
RFC2833.
RFC 2833—Choose this configuration if the preferred DTMF
method to be used across the trunk is RFC2833. Cisco Unified
Communications Manager makes every effort to negotiate
RFC2833, regardless of MTP usage. Out of band provides the
fallback method if the peer endpoint supports it.
OOB and RFC 2833—Choose this configuration if both out of band
and RFC2833 should be used for DTMF.
Note If the peer endpoint supports both out of band and
RFC2833, Cisco Unified Communications Manager will
negotiate both out-of-band and RFC2833 DTMF methods.
As a result, two DTMF events would get sent for the same
DTMF keypress (one out of band and the other, RFC2833).
Table 92-2 Trunk Configuration Settings for SIP Trunks (continued)
Field Description