Re: [Sipp-users] Help required - Handling multiple calls

[Boulkroune, O. (Non-HP:A. Origin) <oli...@hp...>]

Hi,

=20

You should have a look on the 3pcc feature =
http://sipp.sourceforge.net/doc/reference.html#3PCC , you might perhaps =
achieve what you want by adapting the embedded 3pcc scenarios, but I'm =
not sure.

=20

Don't forget to cc to sipp-users when replying.

=20

Regards,

=20

Olivier Boulkroune

=20

________________________________

De : Turlapati Varun-DHGM76 [mailto:DH...@mo...]=20
Envoy=E9 : jeudi 18 octobre 2007 09:39
=C0 : Boulkroune, Olivier (Non-HP:Atos Origin)
Objet : RE: [Sipp-users] Help required - Handling multiple calls

=20

Hello Olivier,

=20

Your understanding is right. To confirm, here is the call flow.

=20

A -----> INV ---> B

A<---200 OK---- B

A---->ACK>----> B

                        B<---INV---C

                        B-->100--->C

A<---Hold<------- B

                        B--->BYE--->C

                        B<---200 OK--C

A---->BYE------> B

A<----200 OK<---B

=20

So if this isn't possible now, could we at our level work on the binary? =
If so, where could we look into?

=20

Thanks for your quick response.

Regards,

-Varun.

=20

________________________________

From: Boulkroune, Olivier (Non-HP:Atos Origin) =
[mailto:oli...@hp...]=20
Sent: Thursday, October 18, 2007 12:53 PM
To: Turlapati Varun-DHGM76; sip...@li...
Cc: Balachandran Siddarth-DPK487
Subject: RE: [Sipp-users] Help required - Handling multiple calls

Hi Varun,

=20

A sipp server instance is able to handle multiple calls coming from =
different remote parts, but not if you have different call-ids within a =
same call flow, i.e if you want the B scenario to look like this :

=20

-----> INVITE (Call-id: XXXX)

<----  200 OK

---> INVITE (Call-id: YYYY)

<--- 200 OK

=20

, this won't work (as the secund Invite will be treated as a new call).

=20

If my understanding is not correct, showing us you're A, B and C =
scenario (assuming they're all sipp instances) as well as B's error and =
messages log file might help.

=20

Regards,

=20

Olivier Boulkroune

=20

________________________________

De : sip...@li... =
[mailto:sip...@li...] De la part de =
Turlapati Varun-DHGM76
Envoy=E9 : jeudi 18 octobre 2007 08:28
=C0 : sip...@li...
Cc : Balachandran Siddarth-DPK487
Objet : [Sipp-users] Help required - Handling multiple calls

=20

Hello,

=20

We are trying a scenario involving 3 parties - A,B and C.

Scenario - A calls B and are engaged. B has call waiting enabled. Now C =
calls B. B should put A on hold and answer C. C will send BYE and then B =
retrieves the call with A. Now A sends BYE.

=20

Problem-

Call is established between A and B. When C calls B, we get an error in =
the logs "Discarded message for new calls while quitting" for the INVITE =
received at B from C. So the case doesn't move further as C gets request =
timed-out.

=20

We used sipp-2.0.1 version

We suspect that the problem is that the binary is not able to handle =
multiple calls (Call-ID).

In case B were to initiate a new call there was a work-around. That is, =
prefix a string and '///' So the call-ID would be like  1234///[Call_ID]

=20

However, in this case the receiving end is having to deal with multiple =
calls. How do we deal with this problem? Is my diagnosis about multiple =
Call-ID problem correct?

=20

Please let us know if you need more details.

=20

Thanks.

-Varun.