Wednesday, November 9, 2011

Temporary Mobile Subscriber Identity or TMSI

Temporary Mobile Subscriber Identity (TMSI)

The TMSI is a temporary number used instead of the IMSI to identify an MS. It raises the subscriber's confidentiality and is known within the serving MSC/VLR-area and changed at certain events or time intervals. The structure of the TMSI may be chosen by each administration but should have a maximum length of four octets (8 digits).

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