Queries on RAS security !!

Hi Jim,

I have a few queries related to H.235, specifically, RAS security.

This is regarding the RAS procedures for authentication . During the GRQ-GCF exchange, the security info ( the secret key and the algorithmId ) gets established with the GK. For the subsequent RRQ, how does the GK relate the RRQ with the info stored ? Is there any mechanism for refreshing keys in RAS ?

Thanks and regards, Aparna.