SIP Trunks no Ringback tone - certain destinations

[danramirez]

Hi Guys,

We have a customer who when calling through SIP Trunks sometimes don't hear ring back tone, specially when calling some mobile numbers.

Is there an option in the sip peer that I can enable/disable to accomplish ringback tone?

Cheers.

daniel

http://www.hatkana.com

http://www.wtelecom.com

 

[DoubleUT]

Play around with options that force SDP early. Each option (nearly) with SDP in the settings name could effect this.