Re: Question related to 3PCC

 

-----Original Message-----
From: Darshan Bildikar [mailto:dbildikaripunity.com] 
Sent: Monday, April 23, 2007 9:02 AM
To: Sarkar, Uttam; sip-implementorscs.columbia.edu
Subject: RE: [Sip-implementors] Question related to 3PCC

I don't think you have understood my question. I understand
the
difference between using 3PCC and REFER. 

My question if I have already used 3PCC to setup a call
between two
parties.
Is it NOW possible to drop out of the signalling after an
arbitrary
amount of time? I am hoping that I can use Refer with
replaces for this.


However, I have noticed that most UA's reject REFER if

1) It is out of dialog
2) We don't HOLD the INVITE dialog within which the REFER is
sent. 

In this situation it is obvious that I cannot hold any of
the parties. 

Darshan

-----Original Message-----
From: Sarkar, Uttam [mailto:Uttam.SarkarIntelliverse.com]
Sent: Monday, April 23, 2007 5:03 PM
To: Darshan Bildikar; sip-implementorscs.columbia.edu
Subject: RE: [Sip-implementors] Question related to 3PCC

Please see RFC 3725.

3PCC is a B2BUA. That should be in the path of SIP signaling
for billing
purpose. 
If your application requires 3PCC to be out of the signaling
path, you
could use REFER to achieve this provided both endpoints
support it.

-----Original Message-----
From: sip-implementors-bouncescs.columbia.edu
[mailto:sip-implementors-bouncescs.columbia.edu] On Behalf
Of Darshan
Bildikar
Sent: Monday, April 23, 2007 1:19 AM
To: sip-implementorscs.columbia.edu
Subject: Re: [Sip-implementors] Question related to 3PCC

Apologies for the retransmit. 

Would appreciate any pointers. I am stuck with this. 

Darshan

-----Original Message-----
From: sip-implementors-bouncescs.columbia.edu
[mailto:sip-implementors-bouncescs.columbia.edu] On Behalf
Of Darshan
Bildikar
Sent: Thursday, April 19, 2007 6:00 PM
To: sip-implementorscs.columbia.edu
Subject: [Sip-implementors] Question related to 3PCC

A question related to transfer

I have achieved a call transfer through 3PCC between parties
A and B and
have individual dialogs with both. 

After completion of the call, I now want to drop out of the
signalling
path (either immediately or after an arbitrary amount of
time). 

Is this legal? Can I send a refer with a replaces to A or B
to achieve
this?

Another related question

I've noticed that most endpoints accept a REFER (inside
INVITE dialog)
only if we hold the INVITE dialog first. Is this because it
is inside
dialog? Can I expect different behaviour if I send the
request outside
of a dialog?

Darshan

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