Data communication system using a reserve request and four...

Telecommunications – Radiotelephone system – Zoned or cellular telephone system

Reexamination Certificate

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C455S066100, C455S510000, C370S347000

Reexamination Certificate

active

08086240

ABSTRACT:
A data communication system wherein four independent frequencies provide for transmissions between a communication controller and at least one node including a first node. The four independent frequencies include: an aligning signal sent on a first frequency, a request signal in a slot allocated to a first node for transmitting reserved request sent on a second frequency, a authorization signal sent on a third frequency and data packets sent over a fourth frequency. In addition, data packets sent over the data communication system can include information related to a count value and termination indication information for determining whether the message has been completely received.

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Bertseka

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