Since the ciphering algorithm A5/2 encryption is weaker (encryption security) compared to A5/1. Would there be any other reason for an operator to use the ciphering algorithm A5/2 only on their BSSAP end, but A5/1 on MSC PLMN?
… or perhaps there is another operator using A5/2, and therefore they are also using A5/2 in order to avoid intra PLMN HO failure ? 5change of ciphering during a HO is certainly a little bit complicated…)
Author
Posts
Viewing 11 posts - 1 through 11 (of 11 total)
The forum ‘Telecom Design’ is closed to new topics and replies.