Subject: Re: [RAI] Review of 6 new SIP header fields defined by OMA

From: Dean Willis <[email-masked]>
Date: Mon, 2 Apr 2012 12:02:40 -0500

On Mar 19, 2012, at 8:20 PM, Nancy Greene wrote:

> Hi, here is some more information on these headers and why the suggested alternatives were not used:
> 
>> From: Paul Kyzivat [[email-masked]]
> ...
>> OMA Header                    Possible Alternative
>> --------------------------    -------------------------------------
>> Conversation-ID               Message-ID of 1st message
> There was a requirement in the OMA CPM work for more than just messages to be grouped together. It was meant to also cover file transfers and chat sessions, for example. So any standalone message, chat session or file transfer that was all related to the same "conversation" would have the same conversation-id.
> 
>> Contribution-ID               Message-ID
> Again, it has to apply to more than messages - it has to apply to chat sessions and file transfers too.
> 
>> 

So the same Conversation-ID and Contribution-ID can occur in multiple INVITE-initiated dialogs? In other words, they identify logical sequences of communications that span more than one call? This would clearly differentiate them from Call-ID.

If it hasn't already been done, you may wish to have OMA consider US patent 7,983,240 within the OMA IPR context. You might also want to consider US patent application 11/646,982.

--
Dean