Is it possible to play MoH from router at remote site, without acutally configuring the SRST feature on the router (say Cisco 2811).
yes William is correct.
You will need these commands even though you don't want SRST
multicast moh 18.104.22.168 port 16384 route X.X.X.X
ip source address X.X.X.X port 2000 (maybe not needed)
I may be mistaken here but I believe you still need to configure the "call-manager-fallback" stanza to get to the moh commands on the router. Multicast is also required in this scenario because, basically, the cisco approach is a workaround. You are tricking devices into listening to a multicast address that you are "containing" to a remote site LAN topology. Thus all remote site devices use the same multicast address.
At least, this is my understanding for what thats worth.
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