| 摘要 |
<p>A repeater 21 for use with Time Division Duplex (TDD) communications such as CT2 delivered over mains electricity cables 22. The repeater is coupled to a mains cable via a branch (the cable is not broken) and in alternate TDD phases converts signals from f1 -> f2 or f2 -> f1 and amplifies them. A clock signal to control timing of the conversion step is derived from a dedicated channel, a tone, or a call in progress. A regenerator function may be combined with the repeater. <IMAGE></p> |
