I have a problem with premature media and inband progress audio. I am using
the latest 220.127.116.11 and this is the setup:
soft phone — asterisk — SIP provider
The number I call is giving back some hints via inband audio I am not able
to ear from the soft phone. They stop on the asterisk and are not routed
down the path to the sip phone.
The SIP part is simple:
soft phone -> asterisk: INVITE
asterisk -> soft phone: TRYING
asterisk -> provider: INVITE
asterisk -> soft phone: 180 RINGING
provider -> asterisk: 183 SESSION PROGRESS
provider -> asterisk: AUDIO
Unfortunately the AUDIO received from the provider by the asterisk box is
not sent to the soft phone.
I think I have tried every combination of progressinband and
prematuremedia, without success.
How can I made the audio received from the provider to the asterisk be
transmitted to the soft phone?