asterisk users - Jun 2006 - incoming call from Zap: "early audio" problem

My design is the following:

SS7_smgd[asterisk]Zap-----backtoback-------EuroISDN[Mediatrix box]----Sip
customers

In this design I have a problem about early audio no passed from asterisk to Zap
un the incominga cal from Zap.

I am sure SS7_smgd passes "early audio" to Asterisk because if I
connect a sip client directly to asterisk I get it.

In extensions.conf I have for the calling incoming from zap and ongoing to
SS7_smgd the following:
exten => _X.,1,noop
exten => _X.,n,Dial(WOOMERA/${EXTEN}|60|og)
exten => _X.,n,Hangup

Nothing special.

On the mediatrix box, the audio is active, but nothing media arrives from ISDN
PRI until the call get connected.

So the only porblem seems to be Zap.

Any thought on it?????

Regards


Rosario 
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An update about my issue is that SS7_smgd still not pass cause code IE from
PSTN.

should it be the cause of the not flow of early media?

Regards
Rosario

  ----- Original Message ----- 
  From: Rosario Pingaro 
  To: Asterisk Users Mailing List - Non-Commercial Discussion 
  Sent: Friday, June 09, 2006 9:32 AM
  Subject: [Asterisk-Users] incoming call from Zap: "early audio"
problem



  My design is the following:

  SS7_smgd[asterisk]Zap-----backtoback-------EuroISDN[Mediatrix box]----Sip
customers

  In this design I have a problem about early audio no passed from asterisk to
Zap un the incominga cal from Zap.

  I am sure SS7_smgd passes "early audio" to Asterisk because if I
connect a sip client directly to asterisk I get it.

  In extensions.conf I have for the calling incoming from zap and ongoing to
SS7_smgd the following:
  exten => _X.,1,noop
  exten => _X.,n,Dial(WOOMERA/${EXTEN}|60|og)
  exten => _X.,n,Hangup

  Nothing special.

  On the mediatrix box, the audio is active, but nothing media arrives from ISDN
PRI until the call get connected.

  So the only porblem seems to be Zap.

  Any thought on it?????

  Regards


  Rosario 


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