| 1. | Pbx private branch exchange remote call control Pbx专用交换机远程呼叫控制rcc |
| 2. | Each telephone served by a private branch exchange 由专用小交换机提供服务的电话分机。 |
| 3. | Pbx private branch exchange switching equipment for voiceband application 话音频带用的专用支线交换机 |
| 4. | Private branch exchange switching equipment for voiceband application 话音频带用专用小交换机交换设备 |
| 5. | Pabx private automaatic branch exchange 私用自动交换分机 |
| 6. | Private automatic branch exchange pabx 专用自动小交换机 |
| 7. | Private automatic branch exchange , pabx 用户自动交换机 |
| 8. | Private automatic branch exchange 专用自动电话交换机 |
| 9. | Computerized branch exchange cbx 计算机化的交换分机 |
| 10. | Small branch exchange 小型电话交换机 |