| 1. | Slow associated control channel traffic channel sacch t 慢速随路控制信道业务信道 |
| 2. | Tdma cellular pcs - digital traffic channel layer 2 Tdma蜂窝式pcs .数字通信信道层2 |
| 3. | Slow associated control channel traffic channel full rate sacch tf 慢速随路控制信道全速率业务信道 |
| 4. | Digital traffic channel layer 1 数字通信业务信道层1 |
| 5. | Digital traffic channel layer 3 数字业务信道层3 |
| 6. | Full rate traffic channel tch f 全速率话务信道 |
| 7. | Full - rate traffic channel bm 全速率业务信道 |
| 8. | Half - rate traffic channel 半速率话务信道 |