Compared to unicast Music On Hold, multicast Music On Hold streams a single data stream, providing Music On Hold to any device which requests and supports it.
This recipe assumes that all the necessary Media Resource Groups and Media Resource Group Lists have been created.
This recipe also assumes the appropriate IOS devices have been configured for multicasting.
To configure multicast Music On Hold, perform the following:
First, configure a server for multicast Music On Hold (Media Resources | Music On Hold Servers).
Select the Music On Hold server to be configured.
Under the section Multi-cast Audio Source Information, check the box titled Enable Multi-cast Audio Sources on this MOH Server.
For the Increment Multi-cast on field, select IP Address:
Click on Save.
Create a new Media Resource Group as described in this chapter. When done, check the box Use Multi-cast for MOH Audio.