Subject: [cuss] Is the "app" header field parameter mandatory or not

From: "DRAGE, Keith (Keith)" <[email-masked]>
Date: Wed, 21 Sep 2011 15:44:34 +0200

Draft-ietf-cuss-sip-uui currently defines the "app" header field parameter as optional, with a value assumed if not there of "uui-isdn". 

I'm wondering whether it would be simpler just to make it mandatory, with the error handling procedure to discard if it is not there.

We have to have a value for the "app" if we are going to interpret the validity of other parameters.

Thoughts?

Keith