[Sipping] Collision free Ids: Call-ID, icid-value, Session-ID

[Gaurav Nangla <gaurav.knangla@xxxxxxxxx>]

Hi there!

Is there an approppriate algorithm like the 'Session-ID generation algorithm' proposed in http://tools.ietf.org/html/draft-kaplan-sip-session-id-02,
for the Call-ID header and icid-value (P-Charging-Vector) param.

If another developer attempts to generate an id (vis-a-vis the Call-ID header and icid-value (P-Charging-Vector) param) using a different algorithm than the one I've cooked up, I'll have collisions with their ids, i.e. they will no longer be globally unique.

Is there an appendix with an algorithm in the specs for generating these ids that I'm missing or is this a real problem?

--
Gaurav

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