| CN | CN1 | CN2 | CN3 | CN4 | CN5 |
| CT | CT1 | CT3 | CT4 | CT5 | CT6 |
| GERAN | GERAN1 | GERAN2 | GERAN3 | GERAN4 | GERAN5 |
| RAN | RAN1 | RAN2 | RAN3 | RAN4 | RAN5 |
| SA | SA1 | SA2 | SA3 | SA4 | SA5 |
| T | T1 | T2 | T3 |

TSG GERAN WG2 (Protocol aspects)

Overview:

TSG GERAN WG2 is responsible for protocol aspects of GERAN. This is for layers above the physical layer, i.e. GERAN WG2 specifies the Data link and RLC/MAC layer protocols and the interfaces between these layers and the physical layer.