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A communication system able to provide multiple path communication between a plurality of stations operating on a single channel. The stations are synchronized and a cyclically repeating series of time slots is defined. One time slot in each cycle is reserved for the transmission of synchronization

A communication system able to provide multiple path communication between a plurality of stations operating on a single channel. The stations are synchronized and a cyclically repeating series of time slots is defined. One time slot in each cycle is reserved for the transmission of synchronization information by a station designated the master station for reception by the other stations, designated slave stations, and maintaining synchronization therein. Another time slot is reserved for any slave station to transmit a message that it requires to communicate to another station, such indication preferably being by transmitting its own pre-assigned address code. The remaining time slots are used for transmitting address information and data. The slave stations operate in a low power condition except during one of the other time slots when they may receive their own address, or except when they need to transmit data.

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A communication system operating on a single channel including a device at each of a plurality of nodes between which it is desired to establish communication, one device including means for transmitting synchronization information to each other device simultaneously and each other device having mea

A communication system operating on a single channel including a device at each of a plurality of nodes between which it is desired to establish communication, one device including means for transmitting synchronization information to each other device simultaneously and each other device having means for providing a synchronization signal in synchrony with said synchronization information, said one device being capable of transmitting to each other device simultaneously an address of another device in one of a cyclically repeating series of consecutive time slots, said one time slot being preassigned for transmission of said address and said other device being arranged to communicate upon receipt and recognition of its address, and at least one other of said time slots in each cycle being reserved so that no such said address may be transmitted therein, whereby any of said other devices may transmit in such a reserved time slot to request communication on said channel, the remaining time slots of said series being usable for the transmission of address information and data.