Liaison statement
Reply to IETF CCAMP Liaison "GMPLS Calls"

Submission date 2007-06-26
From ITU-T SG 15 (Greg Jones)
Response contact
Technical contact
Purpose For comment
Deadline 2008-01-28 Action Taken
Attachments Reply to IETF CCAMP Liaison "GMPLS Calls" - body text
We understand from your liaison that
draft-ietf-ccamp-gmpls-rsvp-te-call-04.txt "Generalized MPLS (GMPLS) RSVP-TE
Signaling Extensions in support of Calls", is awaiting formal publication by
the RFC Editor, and that it is applicable to more than just the ASON
There are a few comments we have on identifiers and addressing for calls that
arise from reading draft-ietf-ccamp-gmpls-rsvp-te-call-04.txt.
1.	Call identifiers.  Please note that G.7713.x series has a call identifier
format.  For G.7713.2, this is described in RFC3474 and has RSVP class num of
2.	Specifying the destination of a call in ASON is done with a UNI Transport
Resource identifier (G.8080 section 10.2).  For G.7713.2, this is described in
RFC3476 as a Transport Network Address (TNA) and has RSVP class num of 229. 
We suggest that an equivalent should be included in a future ASON
applicability draft.
At the time of assignment, both of these class num values were in a range with
the semantics that “RSVP will silently ignore, but FORWARD an object with a
Class Number in this range that it does not understand.�  Thus, usage of
these would not pose problems for RSVP instances that did not process calls. 
Use of these objects has been successfully implemented in OIF interoperability
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