 |
| English | Chinese |
| digital telephone exchange | 数字电话交换机简写为PABX |
| direct dial telephone switching network | 直接拨号电话开关网络 |
| public switched telephone network PSTN | 公共电话交换网简写为PSTN |
| public switched telephone network PSTN | 公共交换网简写为PSN |
|
| English | Chinese |
| digital telephone exchange | 数字电话交换机简写为PABX |
| direct dial telephone switching network | 直接拨号电话开关网络 |
| public switched telephone network PSTN | 公共电话交换网简写为PSTN |
| public switched telephone network PSTN | 公共交换网简写为PSN |