The multiplexing rules of GSM 05.02 allow only certain combinations of logical channels to share a physical channel. The most common combinations are:

Combination I: TCH/F + FACCH/F + SACCH. This combination is used for full rate traffic. It can be used anywhere but C0T0.

Combination II: TCH/H + FACCH/H + SACCH. This combination is used for half rate traffic when only one channel is needed. It can be used anywhere but C0T0.

 Combination III: 2 TCH/H + 2 FACCH/H + 2 SACCH. This combination is used for half rate traffic. It can be used anywhere but C0T0.

Combination IV: FCCH + SCH + BCCH + CCCH. This is the standard C0T0 combination for medium and large cells. It can be used only on C0T0.

Combination V: FCCH + SCH + BCCH + CCCH + 4 SDCCH + 4 SACCH. This is the typical C0T0 combination for small cells, which allows the BTS to trade unnecessary CCCH capacity for a pool of 4 SDCCHs. It can be used only on C0T0.

Combination VI: BCCH + CCCH. This combination is used to provide additional CCCH capacity in large cells. It can be used on C0T2, C0T4 or C0T6.

Combination VII: 8 SDCCH + 8 SACCH. This combination is used to provide additional SDCCH capacity in medium and large cells. It can be used anywhere but C0T0.