| 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 CT WG6 (Smart Card Application Access)

Overview:

TSG CT WG6 is responsible for the specifications of smart card based network authentication applications such as the Subscriber Identity Module (SIM) which is used by 2G systems, the USIM (Universal Subscriber Identity Module) which is used by 3GPP systems and the ISIM (IM Services Identity Module) with the exception of the security algorithms (developed by  SA WG3).