| 摘要 |
In a channel-addressing multiple-access telecommunication system, a channel-allocation system is disclosed in which all stations scan the available channels. An available channel is seized by transmitting on that channel one of two channel-supervisory indications and the address of the called station. Receipt of said one channel-supervisory indication causes all stations to arrest scanning on the seized channel. The called station, upon reception and recognition of its own address transmits the other of said two channel-supervisory indications and its own address as an acknowledgement. Upon receipt of the acknowledgement, the calling station switches from transmission of said one to transmission of the other of said two channel-supervisory indications. A repeater embodiment is also disclosed.
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