A communication system for coupling a plurality of data terminals (144, 146, 148, 10, 152) to a telephone network has a time division multiplexed telephone network access bus (124), providing a plurality of time division slots containing data, coupled to the telephone network (110), and a digital terminal access bus coupled to the plurality of communication devices (128, 130, 132, 134, 136, 138), each communication device being configurable to access any of the time division slots. A controller (122) configures each communication device to access a time division slot.
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