Appendix B: Integrating Cisco Unified Communications Manager and Cisco Unified SRST to Use Cisco Unified SRST
How to Use Cisco Unified SRST Gateways as a Multicast MOH Resource
302
Cisco Unified SCCP and SIP SRST System Administrator Guide
OL-13143-04
An invalid output might be caused by the order in which the Cisco Unified SRST configuration
commands are entered. Use the
no call-manager-fallback
command and reenter the multicast MOH
commands. Rebooting may also clear the error.
Verifying Cisco Unified SRST MOH to PSTN
Use the following procedure to verify Cisco Unified CM control of MOH (the WAN link is up) and that
multicast MOH packets transmit over a public switched telephone network (PSTN).
Note
This feature does not apply when the Cisco Unified SRST router is in fallback mode.
SUMMARY STEPS
1.
Verify that a PSTN caller hears MOH when placed on hold by an IP phone caller.
2.
show ccm-manager music-on-hold
3.
debug h245 asn
4.
show call active voice
DETAILED STEPS
Command or Action
Purpose
Step 1
Verify that a PSTN caller hears MOH when placed on hold by an
IP phone caller.
Use a Cisco Unified SRST gateway IP phone to call a PSTN
phone, and put the PSTN caller on hold. The PSTN caller should
hear MOH.
Step 2
show ccm-manager music-on-hold
Example:
Router# show ccm-manager music-on-hold
Current active multicast sessions : 1
Multicast RTP port Packets Call Codec Incoming
Address number in/out id Interface
=======================================================
239.1.1.1 16384 326/326 42 G.711ulaw Lo0
Use this command to verify that the MOH is
multicast if you are using Windows and Cisco
Unified CM version 4.3 or an earlier version.
Note that the
show ccm-manager
music-on-hold
command displays information
about PSTN connections on hold only. It does
not display information about multicast streams
going to IP phones on hold. The following is an
example of
show ccm-manager music-on-hold
command output.
If the PSTN caller hears MOH, and the
show
ccm-manager music-on-hold
command
displays no active multicast streams, the MOH is
unicast. Confirm this by checking the MOH
performance counters as discussed in the
“Verifying Cisco Unified Communications
Manager Multicast MOH” section on page 296
.
