| 1. | Combined interface for circuit packet switching 电路交换分组交换混合接口 |
| 2. | Circait - switched data - transmission service 电路交换数据传输服务 |
| 3. | Circuit switched public data network , cspdn 电路交换公用数据网 |
| 4. | Circuit - switched public data network cspdn 电路交换公共数据网 |
| 5. | Circuit switched data network , csdn 电路交换数据网 |
| 6. | Circuit switching exchange 电路交换的交换局 |
| 7. | Circuit - switched connection 电路交换连接 |
| 8. | Csm circuit switching mode 电路交换模式 |
| 9. | Csd circuit switched data 电路交换数据 |
| 10. | Circuit - switched network 电路交换网络 |