| 1. | Svc switched virtual circuit or signaling virtual circuit 交换式虚电路或发信号虚电路 |
| 2. | Pvcc permanent virtual circuit 永久虚电路包括 |
| 3. | Permanent virtual circuit , pvc 永久虚电路 |
| 4. | Permanent virtual circuits pvc 永久虚电路 |
| 5. | Pvc permanent virtual circuit 永久虚电路 |
| 6. | Switched virtual circuit , svc 交换虚电路 |
| 7. | Signaling virtual circuit svc 信令虚电路 |
| 8. | Switched virtual circuit svc 交换虚电路 |
| 9. | Switched vitual circuit sv 交换虚电路 |
| 10. | Permanent virtual circuit 永久虚电路 |