Вђ“ Architecture, Protocols And Services — Gsm

A permanent database containing subscriber profiles and their last known location.

Uses modified versions of LAPD (called LAP-Dm) for the air interface and SS7 protocols (MTP) for the network interface. Layer 3 (Network): Divided into three sublayers: GSM – Architecture, Protocols and Services

GSM provides a variety of standard services and built-in security measures: GSM – Architecture, Protocols and Services

Includes features such as call forwarding, call waiting, and multi-party conferences. GSM – Architecture, Protocols and Services

Verifies user identities and provides security keys for encryption.