[Asterisk-Users] IAX vs SIP (music on hold)

[Sean Kennedy]

dbakkerlist at arrayasolutions.com wrote:

>Does IAX support music on hold? It seems only my SIP phones do. Is this 
>correct?
>

As I understand it, once the call is delivered to asterisk, it becomes 
abstracted into a channel.  And you can do anything to one channel that 
you can do to other channels ( with a few notable exceptions including 
zap channels ). 

So it shouldn't make a difference whether it's sip/iax/zap as far as MoH 
is concerned.  What may cause issues is what class of MoH is specified, 
by default and otherwise.  But as I haven't tinkered with that a great 
deal yet, I can't tell you much beyond that.

Good luck

Sean