Layer 2 - LAP-Dm

GSM Layer 2 - LAP-Dm

GSM Layer 2, or the Link Access Protocol for the Dm channel (LAP-Dm), manages the data link control in GSM networks. LAP-Dm is responsible for:

• Establishing a reliable communication link between Mobile Stations (MS) and the Base Transceiver Station (BTS).

• Handling error correction, flow control, and frame synchronization.

• Ensuring data integrity through frame acknowledgment and retransmission of corrupted frames.