Communication terminal for telephone device, has turning on unit provided for connection with synchronous highway or ISDN-controller to develop alternatively connection with fixed network telephone connection

摘要

#CMT# #/CMT# The terminal has a turning on unit (10) converting telephone signals into digital signal packages and vice-versa, and coupling or uncoupling the packages into or from a digital computer data network. The unit is provided for the connection with a synchronous serial highway (9) of a base band controller or an ISDN-controller to develop alternatively a connection with a fixed network telephone connection. #CMT# : #/CMT# An independent claim is also included for an application of synchronous serial highways for full-duplex transmission. #CMT#USE : #/CMT# Used for a telephone device (claimed). #CMT#ADVANTAGE : #/CMT# The full-duplex connection over the highway over the entire transmission circuit separately for the transmitter and the receiver (4-wire-lead) avoids the need for the electrical joints, thus avoiding sources for signal reflections and echoes. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a block diagram of a communication terminal for a telephone device. 1 : Connection terminal(2) Base station 3 : Splitter 9 : Synchronous serial highway 10 : Turning on unit.