asterisk users - Feb 2012 - Early Media configuration doesn't seem to be working

Hi

We are using asterisk 1.8.7.0

Our Sip provider is passing us ringing via Early Media, i.e. using a SIP
183 Session Progress, with session description message which is fine for
the most part but some of our customers are terminating on an ISDN
gateway which doesn't interpret this message and those customers get no
ringing.

After doing some reading on the subject I have tried the following
set prematuremedia=yes in sip.conf
set progressinband=never in sip.conf
set progressinband=never in the peers configuration in question

but the asterisk server still passes on the 183 message and RTP stream
rather than converting it to a SIP 180 Ringing message.

Is there a problem here or am I misunderstanding something?

Thanks
in Advance

Ish 
-- 
Ishfaq Malik
Software Developer
PackNet Ltd

Office:   0161 660 3062

Hi,

on a similar setup I set in sip.conf:

prematuremedia=no
progressinband=never

in the peers configuration.
With this config you tell Asterisk not to handle inband information at
all. But: Maybe you won't get any inband "error messages" also.


Greetings from Wuppertal
Max Grobecker


Am 07.02.2012 11:53, schrieb Ishfaq Malik:
> Hi
> 
> We are using asterisk 1.8.7.0
> 
> Our Sip provider is passing us ringing via Early Media, i.e. using a SIP
> 183 Session Progress, with session description message which is fine for
> the most part but some of our customers are terminating on an ISDN
> gateway which doesn't interpret this message and those customers get no
> ringing.
> 
> After doing some reading on the subject I have tried the following
> set prematuremedia=yes in sip.conf
> set progressinband=never in sip.conf
> set progressinband=never in the peers configuration in question
> 
> but the asterisk server still passes on the 183 message and RTP stream
> rather than converting it to a SIP 180 Ringing message.
> 
> Is there a problem here or am I misunderstanding something?
> 
> Thanks
> in Advance
> 
> Ish