[Serusers] Anyway to steal Media IP/Port from RTPProxy or MediaProxy

[Hoa Thai Duy]

Dear Greger & List
 
Actually, I want Asterisk to deploy re-INVITE to let the media flow directly
between my UAs and ITSPs (neither relay via RTP/MediaProxy and Asterisk
RTP).
Case 1:
If I forward it to Asterisk and use re-INVITE in sip.conf
exten => _X.,1,Answer()
exten => _X.,2,Dial(SIP/Number at ITSP)
exten => _X.,3,Hangup
 
Asterisk actually open RTP with UAs and have the c=/m= info because of
Answer. But I faced the re-INVITE with call drop-off issue.
When both parties are talking, if remote phone from ITSP hang up, things are
fine. If UA hang up, remote phone is still in talking status, and I see no
BYE from Asterisk send to ITSP, even it receive BYE from UA
 
 
  
Case 2:
If I forward it to Asterisk and not use re-INVITE in sip.conf
exten => _X.,1,Answer()
exten => _X.,2,Dial(SIP/Number at ITSP)
exten => _X.,3,Hangup
 
Everything is fine
 
Case 3:
If I forward it to Asterisk and use re-INVITE in sip.conf
 
exten => _X.,1,Dial(SIP/Number at ITSP)
exten => _X.,2,Hangup
 
Asterisk don't actually open RTP with UAs and don't have the c=/m= info. At
that time, c= and m= from UAs to Asterisk always point to RFC1918, and also
in Asterisk's memory knowledge.
If this case, when re-INVITE happen, the re-INVITE to ITSP contain RFC1918
IP, and cause wrong media path.
 
Pls. advice
 
Brgds
 
Hoa
 
 

  _____  

From: Greger V. Teigre [mailto:greger at teigre.com] 
Sent: Thursday, June 22, 2006 7:02 PM
To: Hoa Thai Duy
Cc: serusers at iptel.org
Subject: Re: [Serusers] Anyway to steal Media IP/Port from RTPProxy or
MediaProxy


I would think you are better off forwarding the INVITE to Asterisk?!
g-)

Hoa Thai Duy wrote: 

Hi List 

I want to get to c= and m= value after use_media_proxy or force_rtp_proxy
(after real RTP flow between UA and media/rtpproxy)

I want this in order to steal this pair of information, and bypass the
RTPProxy/MediaProxy and use this information for UA to talk with other
application server (eg. Asterisk)

Pls. help 

Brgds 




  _____  


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