Re: [sipcore] About Join and Replaces Headers: //Replaces header's extension

[Paul Kyzivat <[e-mail]>]

IIUC, you are talking about (1):

   X -------------------- Y
       voice/video

moving to (2):

   X -------------------- Y
   |       voice
   |
   +--------------------- Z
         HD video

Is that right?

And then you are looking for the signaling that will allow that to happen?

An INVITE with Join by Z to X would probably result in (3):

   X -------------------- Y
   |       voice/video
   |
   +--------------------- Z
         HD video

while an INVITE with Replaces by Z to X would probably result in (4):

   X -------------------- Z
          video

ISTM that (3) is pretty reasonable, after which X can drop its video stream.

I don't see that anything new is required to achieve this.

	Thanks,
	Paul

On 9/27/2010 12:04 PM, [e-mail] wrote:
>
> Hi Paul,
>
> Nowadays, I am considering requirements about media streams tranfering
> between user's UEs, such as transfering active video stream from one
> normal UE to one HD(High Definitive) device.
>
> This function is similar to 3GPP's IUT(Inter UE Transfer). But I'd like
> to seek a end to end solution, with out SCC_AS's 3pcc call control.
>
> I think we could do one potential extension for Replaces header, as:
>
> The Replaces header could be added with a indication.
> For examle, transfer video to HD device, while save the audio at the
> orignal device:
> The new party(new device) send a INVITE(the Offer with video stream)
> with Replaces header, with the indication. Then the UAS of this INVITE
> can just transfer the media streams(video) to the new session, and save
> the other streams in the origianl session (by a new Re-INVITE to just
> mute the transfered media streams).
>
> Thanks,
>
> Gao
>
> --------------------------------------------------------
> ZTE  Information  Security  Notice:  The  information  contained  in  this  mail  is  solely  property  of  the  sender's  organization.  This  mail  communication  is  confidential.  Recipients  named  above  are  obligated  to  maintain  secrecy  and  are  not  permitted  to  disclose  the  contents  of  this  communication  to  others.
> This  email  and  any  files  transmitted  with  it  are  confidential  and  intended  solely  for  the  use  of  the  individual  or  entity  to  whom  they  are  addressed.  If  you  have  received  this  email  in  error  please  notify  the  originator  of  the  message.  Any  views  expressed  in  this  message  are  those  of  the  individual  sender.
> This  message  has  been  scanned  for  viruses  and  Spam  by  ZTE  Anti-Spam  system.
>