| 摘要 |
Line extender equipment for extending the range of an electrical telephone line is disclosed. A first interface (12) receives electrical telephone signals from a central office and pre-emphasises the signals such that they are in a form suitable for optical transmission. The pre-emphasised signals are then converted into optical signals and transmitted via optical fibre (13). A second interface (14) converts the optical signals into electrical signals and de-emphasises the electrical signals such that the signals are suitable for driving an electrical telephone line (56). The line extender equipment may allow the range of a telephone line to be extended for DSL services. |
