Ensure that Increment Multicast on IP Address is selected. The default depends on version of Call Manager.
Step 6 Step 7
Change the default max hops (TTL) to reflect the routed network. Click on Update to save the changes.
Multicast Music-on-Hold and IP/TV Configurations
A warning message will be displayed if the MoH Server has not been associated with a Media Resource Group (MRG) and Media Resource Group List (MRGL). The MoH Server should be associated with the appropriate MRG and MRGL before the source is assigned to the IP phone. MRG and MRGL configurations are not covered in this document as this involves the configurations of other Media Resources such as conference bridges.
Configuring the MoH Audio Source
To configure the MoH audio source for Multicast, do the following:
From the Call Manager Admin main page, select Service >Music On Hold. Figure 7-3 shows the MoH Audio Source Configuration screen.
Call Manager—MoH Audio Source Configuration
Step 2 Step 3 Step 4
Select the desired audio source from the list on the left. Select Allow Multicasting. Click on Update to save the changes.
Cisco AVVID Network Infrastructure IP Multicast Design