| 单词 | v.27ter |
| 释义 | V.27terV.27terAn ITU standard (1976) for synchronous 2,400 and 4,800 bps half-duplex analog modems using DPSK modulation on dial-up lines. It includes an optional 75 bps back channel. V.27ter is used in Group 3 fax transmission without the back channel. |
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