[asterisk-users] Cannot hear ringback music from telco

[Steve Totaro]

Vincent Tam wrote:
> Hello,
> We have an asterisk 1.2.13 box that use a Digium TE205P T1 PRI connect 
> to the telco, users mainly use snom 320/300 SIP phones.
> When dialing to an external phone number with custom ringback music, 
> users reported that they could not hear the music but can only hear 
> the standard ring tone generated by the system.
> Is there any kind of settings need to allow the ringback music pass to 
> the phone? We only use this simple dialplan to make outgoing call:
> exten => _9.,1,Set(CALLERID(all)=${CIDPREFIX}${CALLERIDNUM})
> exten => _9.,n,Dial(Zap/g0/${EXTEN:1}||T)
> * CIDPREFIX is the 5 digit prefix of the company's PRI line, 
> CALLERIDNUM are 3 digit internal numbers
> Thanks!
> Vincent
Use the m option in your dial statement.

*m*: Provide Music on Hold to the calling party until the called channel 
answers. This is mutually exclusive with option 'r', obviously. Use 
m(class) to specify a class for the music on hold.

Thanks,
Steve Totaro