[Ecrit] LoST returning location used??

[Shida Schubert <shida at ntt-at.com>]

I might have overlooked something completely but while I was
reviewing the framework document the following question came up.

The framework document expects some sort of flagging on
the location to indicate which location was used to do location
based routing (LoST & non-LoST) when there are multiple
location information in the message.

According to the LoST-05, the client can insert multiple
location information but which location was used for the actual
resolution is not returned to the client. One may guess or sometime
clearly find out which location was used, simply analyzing the
"ServiceBoundary" but according to the debate going on right
now it doesn't seem so simple after all.

If the client can't tell which location was actually used for routing,
how would the client, let's say a proxy using the "used-for-routing"
parameter indicate which location was actually used for routing the
call.

The framework also expects the entity on the signaling path
acting as a LoST client to use the same location information flagged
with "used-for-routing", would it restrict the LoST client to include
only the flagged location information for LoST query once it's
flagged using "used-for-routing"??

Regards
 Shida

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