[Asterisk-Users] Multicast Music on Hold

[Kevin P. Fleming]

Nathan Alberti wrote:

> As i am using a central asterisk box with multiple stub sites I don't
> wish every call put on hold to be wasting WAN bandwidth, I am wondering
> if it is possible to create a multicast stream to each site and rather
> than asterisk sending its address and the media information during a
> hold it sends the multicast address and multiple phones can be served by
> the one stream ?

This is certainly possible, but I doubt that most existing SIP phones
have the ability to subscribe to multicast groups and handle it
properly. Without that, it would only work on a LAN (non-routed).