Hi Jean, On Wednesday 16 Jun, 2010, at 8:24 PM, Jean C?rien wrote: > as an FYI, I use chan_ss7 1.3, the dial option is: > Options: (ss7/siuc/NUMBER,60,L(91580000:60000:30000)) > > and I am getting correct ringback tones (music or classic tones) > from my > correspondents. I had to play with the r / R and eventually got > there before > getting the tones. This is for outgoing calls, which works fine. The problem I am facing (and Claudio too) is for the incoming calls from the PSTN provider. Answering the call first or adding r / R options does not work either in this case. I have opened a case with my provider and they told me that my gateway is not sending any ringback tone to the caller. I have the following logs in incoming calls from ss7 : [2010-06-16 20:26:25.755] DEBUG[31943] l4isup.c: SS7 indicate CIC=1. [2010-06-16 20:26:25.755] DEBUG[31943] l4isup.c: Sending ALERTING call progress for CIC=1 in-band ind=0. But there is no media. So I guess it has something to do with asterisk ringtone generator. Btw, to answer to your question, Claudio, I haven't found the solution yet :-(( Regards, - vma .