Method and system for transferring high level control messaging framing and payload data in a serial stream in a communications system

摘要

A method of transferring payload, control and messaging data in a communications system, in a serial data stream at a pre-set bit rate per second is disclosed. The method comprises, transferring a chosen integer number of frames of serial data per second. Each frame comprises a number of timeslots of data. Each timeslot comprises a predetermined number of first bits comprising payload related data or messaging bits and a calculated number of second bits comprising control bits. The calculated number is calculated so that the sum of the predetermined number and the calculated number multiplied by the number of timeslots and the chosen integer number equals the number of bits transferred in one second at the pre-set bit rate. Preferably, bits from the second bits at fixed intervals within the serial data stream comprise a out-of-band communications channel with the stream. Preferably, the pre-set bit rate is synchronized to the clock of a host communications system. A communications system employing the method is further disclosed.