[SIPForum-discussion] Media Play Call Flow
gurudatt balaji
gurudattbalaji at gmail.com
Wed Apr 18 13:19:57 UTC 2007
Hi all,
I've a small update,
408 will not be sent from the user B(usually 408 is sent from server),
Actually after timeout, AS will send CANCEL to B and B will respond with
487-Req Terminated.
AS<---->B
----------------
CANCEL-->
<--200OK
<--487
ACK-->
How MS will release the established RTP session after playing announcement.?
-By sending BYE, does this BYE is fwded to A?
-Does BYE will have any impact on A while sending Invite of C?
Pls let me know ur comments.
Reg
Balaji
On 4/18/07, XuRui <BeShrek at msn.com> wrote:
> Hi Siva,
>
> Well...
> So sorry that the re-INVITE is unnecessary at all.
> The 200(INVITE) takes C's SDP.
>
> I confused myself that I thought the 180 to A is a 183(With SDP).
> -__________-b
>
> Regards,
> Xu Rui
>
> ----- Original Message -----
> From: "Siva M-Q16748" <sivam at motorola.com>
> To: "XuRui" <BeShrek at msn.com>; <alexzhang at gdnt.com.cn>;
> <discussion at sipforum.org>
> Sent: Wednesday, April 18, 2007 7:00 PM
> Subject: RE: [SIPForum-discussion] Media Play Call Flow
>
> Hi Xu Rui
>
> Thanks for the flow
>
> I did not understand why is the first re-INVITE towards A required
>
> The media info got from the MS could be sent to A in the 200 OK itself
>
> Whats your view ??
>
> Thanks
> Siva M
>
> -----Original Message-----
> From: XuRui [mailto:BeShrek at msn.com]
> Sent: Wednesday, April 18, 2007 2:32 PM
> To: alexzhang at gdnt.com.cn; Siva M-Q16748; discussion at sipforum.org
> Subject: Re: [SIPForum-discussion] Media Play Call Flow
>
> Hi Siva,
>
> The sequence is broken by the mail client.
> I put it in a text file as attachment.
> There's no "re-INVITE" to C.
> The "INVITE" to C is a new one.
>
> PS:I think alex is right. :)
>
> Regards,
> Xu Rui
>
> ----- Original Message -----
> From: <alexzhang at gdnt.com.cn>
> To: <BeShrek at msn.com>; <sivam at motorola.com>; <discussion at sipforum.org>
> Sent: Wednesday, April 18, 2007 4:58 PM
> Subject: RE: [SIPForum-discussion] Media Play Call Flow
>
> I think the announcement is played for A to be informed the call is
> forwarded.
>
>
> -- A l e x
>
> -----Original Message-----
> From: discussion-bounces at sipforum.org
> [mailto:discussion-bounces at sipforum.org] On Behalf Of XuRui
> Sent: Wednesday, April 18, 2007 4:30 PM
> To: Siva M-Q16748; discussion at sipforum.org
> Subject: Re: [SIPForum-discussion] Media Play Call Flow
>
> Hi,
>
> I hope this sequence will be what you need.
> But it looks something strange for me that B could listen to
> announcement after it times out.
> Hope it helpful.
>
> A AS B C
> MS
> | INVITE | | |
> |
> |------------------>| INVITE | |
> |
> | 100 |------------------>| |
> |
> |<------------------| | |
> |
> | | 100 | |
> |
> | |<------------------| |
> |
> | | 180 | |
> |
> | 180 |<------------------| |
> |
> |<------------------| | |
> |
> | | 408 | |
> |
> | |<------------------| |
> |
> | | ACK | |
> |
> | |------------------>| |
> |
> | | | |
> |
> | | INV | |
> |
> | |------------------>| |
> |
> | | 100 | |
> |
> | |<------------------| |
> |
> | | 200 | |
> |
> | |<------------------| |
> |
> | | ACK | |
> |
> | |------------------>| |
> |
> | | | |
> |
> | | INV | |
> |
> |
> |---------------------------------------------------------->|
> | | INV | |
> |
> | |-------------------------------------->|
> |
> | | 100 | |
> |
> |
> |<----------------------------------------------------------|
> | | 100 | |
> |
> | |<--------------------------------------|
> |
> | | 200 | |
> |
> |
> |<----------------------------------------------------------|
> | | ACK | |
> |
> |
> |---------------------------------------------------------->|
> | | re-INVITE | |
> |
> | |------------------>| |
> |
> | | 100 | |
> |
> | |<------------------| |
> |
> | | 200 | |
> |
> | |<------------------| |
> |
> | | ACK | |
> |
> | |------------------>| |
> |
> | | 200 | |
> |
> | |<--------------------------------------|
> |
> | | ACK | |
> |
> | |-------------------------------------->|
> |
> | 200 | | |
> |
> |<------------------| | |
> |
> | ACK | | |
> |
> |------------------>| | |
> |
> | re-INVITE | | |
> |
> |<------------------| | |
> |
> | 100 | | |
> |
> |------------------>| | |
> |
> | 200 | | |
> |
> |------------------>| | |
> |
> | ACK | | |
> |
> |<------------------| | |
> |
> | | | |
> |
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~~~~~~~
> | | Session Media... |
> |
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ~~~~~~~~~~~
> | | | |
> |
>
>
> Regards,
> XuRui
>
> ----- Original Message -----
> From: "Siva M-Q16748" <sivam at motorola.com>
> To: <discussion at sipforum.org>
> Sent: Wednesday, April 18, 2007 3:41 PM
> Subject: [SIPForum-discussion] Media Play Call Flow
>
> > Hi
> >
> > Could anyone help me with how the call flow should be for the below
> > mentioned scenario
> >
> > A calls B
> > B Rings and Times out
> > Application server sends INVITE for C
> > Parallelly Application server has to play announcement for B that call
>
> > is being Forwarded.
> > Once C answers A and C should get connected .
> >
> > Regards,
> > Siva M
> >
> > _______________________________________________
> > This is the SIP Forum discussion mailing list TO UNSUBSCRIBE, or edit
> > your delivery options, please visit
> > http://sipforum.org/mailman/listinfo/discussion
> > Post to the list at discussion at sipforum.org
> >
> _______________________________________________
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> Post to the list at discussion at sipforum.org
>
> _______________________________________________
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