Method and apparatus for converting time-division data signals received on an incoming trunk to time-division data signals of different format for transmission over an outgoing trunk

摘要

Methods and apparatus for converting time-division data signals received over an incoming trunk having ve channels into time-division data signals for transmission over an outgoing trunk having vs channels (where vs>ve). The device includes means for storing the data bits contained in each incoming frame; means for reading at an intermediate frequency fi, during read enable periods, the stored data bits corresponding to ve busy outgoing channels and for evenly distributing vs-ve free outgoing channels amongst the ve busy outgoing channels, during read inhibit periods; and means for transmitting at a frequency fs the data bits read at the intermediate frequency fi. This device may advantageously be used in PCM telephone exchanges.