A time division digital switching network comprises first multiplexing means in which first-order digital data channels transmitting words consisting of a given number of bits and having first rates which are different from, but multiple of, one another undergo a first multiplexing converting them into...http://www.google.fr/patents/US3987251?utm_source=gb-gplus-shareBrevet US3987251 - Time division switching network for switching multirate multiplexed data
Time division switching network for switching multirate multiplexed data
