| 单词 | M12 (Multiplex 1-to-2) |
| 释义 | M12 (Multiplex 1-to-2) A device used in a digital carrier system to multiplex level one bit streams into a level two bit stream. In a T-carrier system, for example, an M12 multiplexes four T1s into a T2 bit stream. See also bit stream, carrier, multiplexer, T1, T2, and T-carrier. |
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