| 单词 | switched 56 |
| 释义 | Switched 56Switched 56A dial-up digital service provided by local and long distance telephone companies. There is a monthly fee and per-minute charge like the analog voice network. For connection, a DSU/CSU is used instead of a modem. Switched 56 uses a 64 Kbps channel, but one bit per byte is used for band signaling, leaving 56 Kbps for data. |
| 随便看 |
|
英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。