★ Temporary Mobile Subscriber Identity for most commonly sent between the mobile and the network.

★ TMSI is assigned randomly by VLR to each mobile in the area.

★ The TMSI number is local for a specific local area, and need to be updated every time when the mobile moves to a new geographical area.

★ Paging a mobile is the key use of the TMSI.

★ The communication between the mobile and the base station is known as paging.

★ The emphasis of broadcast information is top set up channels for paging.

★ Broadcast mechanism is available in every cellular system for distributing broadcast information to a plurality of mobiles.