[SIPForum-discussion] Can we specify (m = audio 0 ..) audio port aszero for hold scenario.

[nabam serbang]

Hi Ashok,

I you might like to digg at RFC 3264 at http://www.ietf.org/rfc/rfc3264.txt?number=3264
Rfc  basically is for med-dialog update of SDP but applies to other cases as well.


Nabam Serbang
Software Engineer, Avaya,
Home Page: http://sites.google.com/site/nabamserbang/




________________________________
From: "ashok.pitambar at wipro.com" <ashok.pitambar at wipro.com>
To: srinivas.banda at wipro.com
Cc: discussion at sipforum.org
Sent: Sunday, January 11, 2009 11:33:38 AM
Subject: Re: [SIPForum-discussion] Can we specify (m = audio 0 ..) audio port aszero for hold scenario.


Hi Srinivas,
 
    Thanks for your input, do you have any idea which of SIP or SDP related RFC's specify this kind of hold? Is this is responsibility of sip stack to take care this kind of hold scenario.Because in our case MG(Media Gateway) is replying with 510 protocol error for MGCP message(MDCX) with m = audio 0 ..& hence sip with 4XX response.
 
Thanks,
Regards,
Ashok Pitambar

________________________________
 From: Srinivas Banda (WT01 - Telecom Equipment)
Sent: Fri 1/9/2009 11:33 PM
To: Ashok Pitambar (WT01 - Telecom Equipment)
Subject: RE: [SIPForum-discussion] Can we specify (m = audio 0 ..) audio port aszero for hold scenario.


Apart from port 0, you should change the media attribute to "inactive/sendonly". sendonly will be used if you have music on hold option.
 
Regards
Srinivas


________________________________
 From: discussion-bounces at sipforum.org [mailto:discussion-bounces at sipforum.org] On Behalf Of ashok.pitambar at wipro.com
Sent: Friday, January 09, 2009 2:57 AM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] Can we specify (m = audio 0 ..) audio port aszero for hold scenario.


Hi All,
 
By setting the audio port to zero in reinvite , will it invoke hold?
 
call folw:
 
A                       B
  ----INV------->
 m=audio 29590..
 < ------200------------
m=audio 4100..
--------ACK----------->
   call established 
 
---------INV-(hold)---->
c=IN IP4 0.0.0.0
m=audio 29590..
a=sendonly
<----------200------------
m=audio 4100..
----------ACK---------->
 
---------INV--(hold)----->
c=IN IP4 0.0.0.0
m=audio 0...
a=inactive
 
 
 
Regards ,
ASHOK PITAMBAR


      
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