# Intro

### GSM Radio Stack

The GSM Radio Stack comprises multiple layers, each responsible for different communication aspects in GSM mobile networks:

1. **Physical Layer (Layer 1)**: Manages the actual radio transmission and reception.
2. **Data Link Layer (Layer 2)**: Includes protocols like LAPDm, responsible for error correction and reliable data transfer.
3. **Network Layer (Layer 3)**: Consists of sub-layers for call control, mobility management, and radio resource management.

![](/files/UkncANO64M6Uui4zi9uO)

This layered approach ensures efficient management and operation of GSM mobile communications.


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