Re: [Ecrit] draft-ietf-ecrit-additional-data-11: multiple entities adding data

[Brian Rosen <[e-mail]>]

Not sure pictures in ascii art would help, but more words might.

My usual example is a medical sensor based device adds some, a specialized
service provider who services the device adds some and a communications
service provider adds some.  all of thise go in the SIP message.  then the
access network sends some in the PIDF.

With respect to multiple entities adding data, proxies can't add bodies,
but B2BUAs can.

However, you have pointed out a problem that arose in the evolution of the
mechanism.  Originally, there was an outer envelope wit the blocks inside
it.  That would let us know the source of each block because the data
provider block is required.   The current mechanism doesn't have that.
 It's a problem.

Brian

On Tuesday, August 6, 2013, Christer Holmberg wrote:

>  Hi,
>
> The draft talks about all kind of different entities that might add
> additional data to an emergency call.
>
> First, I think it would be good to have some pictures showing a
> few different scenarios.
>
> Second, the draft doesn't seem to describe the case where multiple
> entities are adding data - for the same call. Will multiple MIMEs etc be
> used, are there restrictions, etc etc etc? OR, is it not allowed to begin
> with?
>
> Regards,
>
> Christer
>
>
>
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