RE:

["Dana L. Blair" <dblair@cisco.com>]

>   -----Original Message-----
>   From: owner-more@ops.ietf.org [mailto:owner-more@ops.ietf.org]On Behalf
>   Of Atsushi Takeshita
>   Sent: Wednesday, July 25, 2001 12:44 AM
>   To: more@psg.com
>   Subject: Re: 
>   
>   
>   Dana,
>   
>   > The second example above seems to imply handoff from one
>   > access network to another with the same terminal.  Mobile
>   > IP works for this.
>   
>   I agree.
>   
>   > The first example and your definition suggests that a user
>   > is using one terminal
>   > then starts using another terminal and needs some mobility
>   > between the useage of each terminal.  Can you provide
>   > a specific application and usage scenario where this is
>   > important ?
>   
>   At this moment, I don't find any applications like that.
>   However, in the future, I think we will have such applications.
>   Let me give two examples.
>   1) A user is videoconferencing the mobile 
>     terminal. Then the user transfer the videoconference
>     to a videoconference system connected to a fixed network.
>   2) A user is playing a network game on mobile a terminal.
>     The the user transfer the game to the game terminal like
>     PlayStation.

Thanks for the explaination.

In fact, session mobility as
you just described it would be useful today with my cell phone.
For example, I am on the phone in my car and walk to my cubicle
while on the phone.  Once in my cube, I would like to transfer the
call to my desk phone for a variety of reasons regarding cost,
power, security, ... but I can't with existing cell phone
capabilities.

>   
>   My definition of session mobility may be different from 
>   one described in the I-D.
>   
>   > Is accounting information for application usage an area that
>   > you think the IETF should consider standardizing ?  I am not
>   > aware of work in the IETF in this area, but I can check if needed.
>   
>   I'm not sure.
>   But it seems it's out of IETF's scope.

I agree it's probably out of IETF's scope.

Dana

>   
>   ------------------------------------------
>   TAKESHITA, Atsushi
>   DoCoMo Communications Laboratories USA, Inc.
>   takeshita@dcl.docomo-usa.com
>   Tel: 408-451-4705 / Fax: 408-573-1090
>   ------------------------------------------
>   
>   
>