On Aug 2, 2013, at 10:23 AM, Brett Tate <br...@broadsoft.com> wrote:
> However once decoded/extracted out of the sip-uri or telephone-uri, is the > tgrp value case sensitive? Since tgrp is case-insensitive within > telephone-uri's telephone-subscriber (also used by sip-uri), I assume that > the tgrp value is case-insensitive since it would be strange for the tgrp > value to be context sensitive based upon if sent within sip-uri or > telephone-uri. However, I also would not be surprised if someone said that > nobody knows except for the owner of the trunk-context. I know for a fact that some devices treat it as case-sensitive for routing purposes; and I've seen some tgrp strings that are all upper-case or even mixed-case, although those trunk-context domains didn't use lower-case counterparts of the same character strings to cause any confusion. My personal belief is it should be sent all lower-case and treated on receive as case-insensitive, as a form of "be strict on send, loose on receive", but convincing all vendors or operators to change existing behavior is a losing proposition.[1] -hadriel [1] it's debatable if treating it as case-insensitive is a "loose on receive" model, since it can cause problems if the sender really intended it to be case-sensitive. _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
