Benoit Panizzon
2011-Feb-10 11:08 UTC
[asterisk-users] Early audio SIP sequence order question
Hello We have quite some problems with early audio with our asterisk 1.6.2.15 What we observe is: Asterisk - Carrier PBX Asterisk:Invite(+sdp) => Carrier Carrier starts to send RTP Audio (ignored by Asterisk) Asterisk <= Carrier:100 Trying Asterisk <= Carrier:180 Ringing Asterisk signals Ringing to the caller which in turn generated the ringing tone (still ignoring the early audio sent by the carrier). Asterisk <= Carrier:200 OK(+sdp) Asterisk:ACK => Carrier Asterisk starts to send RTP Audio to Carrier Only now Asterisk starts playing Audio to the caller. This causes quite troubles, as the price of a value added number is announced in early audio in switzerland, giving the caller a chance to hang up before the call is established. But the caller connected to asterisk does not hear that early audio announcement. Is this an asterisk bug, or should the carrier have signaled 183 Session Progress instead of 180 Ringing? Kind regards Benoit Panizzon -- I m p r o W a r e A G - ______________________________________________________ Zurlindenstrasse 29 Tel +41 61 826 93 07 CH-4133 Pratteln Fax +41 61 826 93 02 Schweiz Web http://www.imp.ch ______________________________________________________
Faisal Hanif
2011-Feb-10 11:26 UTC
[asterisk-users] Early audio SIP sequence order question
Go here http://www.voip-info.org/wiki/view/Asterisk+cmd+Dial
and use proper parameters to dial command to pass early media.
-----Original Message-----
From: Benoit Panizzon
Sent: Thursday, February 10, 2011 4:08 PM
To: asterisk-users at lists.digium.com
Subject: [asterisk-users] Early audio SIP sequence order question
Hello
We have quite some problems with early audio with our asterisk 1.6.2.15
What we observe is:
Asterisk - Carrier PBX
Asterisk:Invite(+sdp) => Carrier
Carrier starts to send RTP Audio (ignored by Asterisk)
Asterisk <= Carrier:100 Trying
Asterisk <= Carrier:180 Ringing
Asterisk signals Ringing to the caller which in turn generated the ringing
tone (still ignoring the early audio sent by the carrier).
Asterisk <= Carrier:200 OK(+sdp)
Asterisk:ACK => Carrier
Asterisk starts to send RTP Audio to Carrier
Only now Asterisk starts playing Audio to the caller.
This causes quite troubles, as the price of a value added number is
announced
in early audio in switzerland, giving the caller a chance to hang up before
the call is established. But the caller connected to asterisk does not hear
that early audio announcement.
Is this an asterisk bug, or should the carrier have signaled 183 Session
Progress instead of 180 Ringing?
Kind regards
Benoit Panizzon
--
I m p r o W a r e A G -
______________________________________________________
Zurlindenstrasse 29 Tel +41 61 826 93 07
CH-4133 Pratteln Fax +41 61 826 93 02
Schweiz Web http://www.imp.ch
______________________________________________________
--
_____________________________________________________________________
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