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
296
Cisco Unified SCCP and SIP SRST System Administrator Guide
OL-13143-04
Verifying Cisco Unified Communications Manager Multicast MOH
The Cisco Unified CM multicast MOH configuration must run correctly for Cisco Unified SRST
multicast MOH to work. Verification of Cisco Unified Communications Manager multicast MOH differs
for configurations using a WAN with multicast enabled and a WAN with multicast disabled.
You must verify that the Cisco Unified CM multicast MOH is provided through multicasting and not
unicasting. Because unicast MOH is enabled by default, it is easy to mistakenly conclude that multicast
MOH is working when it is not.
Step 1
Verify that Cisco Unified CM system’s multicast MOH is heard on a remote gateway.
a.
If multicast is enabled on the WAN, make sure that the number of hops configured on the
Cisco Unified Communications Manager MOH server is sufficient to allow audio packets to reach
the remote site (see the
“Enabling Multicast on the Cisco Unified Communications Manager MOH
Server and Configuring Port Numbers and IP Addresses” section on page 290
). Then call an IP
phone on a remote gateway, place the call on hold, and verify that MOH is heard.
b.
If multicast is not enabled on the WAN, place an IP phone on the same subnet as the Cisco Unified
Communications Manager MOH server and verify that MOH can be heard. Because the IP phone
and the MOH server are on the same subnet, no multicast routing capabilities in the network are
required.
Step 2
Verify that the Cisco Unified CM system’s MOH is multicast, not unicast.
a.
From Microsoft Windows, select
Start > Programs > Administrative Tools
>
Performance
.
b.
In the Performance window, click the + (plus) icon located at the top of the right pane.
c.
In the Add Counters window, select Cisco MOH Device.
d.
In the Performance window, you can monitor the MOHMulticastResourceActive and
MOHUnicastResourceActive counters to check on multicast activity.
Configuring Cisco Unified SRST for Multicast MOH from an Audio File
Note
Use the steps in this section only when you are using Microsoft Windows to run Cisco Unified
Communications Manager version 4.3 or below. Use the RTMT (Real-Time Monitoring Tool) in
Cisco Unified Communications Manager version 5.0 and later versions on the Linux operating system
to monitor MOH activity in Cisco Unified CM version. See
Cisco Unified Communications
Serviceability System Guide, Release 4.0(1)
for more information about RTMT.
Use the following procedures to configure Cisco Unified SRST for multicast MOH from an audio file.
•
Enabling Multicast MOH on the Cisco Unified SRST Gateway, page 297
•
Verifying Basic Cisco Unified SRST Multicast MOH Streaming, page 301
•
Verifying Cisco Unified SRST MOH to PSTN, page 302
•
Verifying Cisco Unified SRST Multicast MOH to IP Phones, page 306
