WIRELESS COMMUNICATION SYSTEM

摘要

A system for the wireless connection of a conventional telephone instrument, such as a telephone set (150), modem (130), or facsimile machine (140), to a standard telephone line (101). The system has two units. A base unit (110) connects to the standard telephone line and communicates with one or more extension units. Extension units (120) transform the communications between themselves and the base unit into standard telephone line signals. The extension unit not only handles duplexed audio, but also senses the on-hook/off-hook status of the telephone instrument and commands the base unit to go off-hook when appropriate. The base unit detects a ringing voltage on the standard telephone line and commands the extension unit to couple a similar ringing voltage to the conventional instrument.