Intra channel bank communication protocols between channels and

Details Intra channel bank communication protocols between channels and Intra channel bank communication protocols between channels and

1990-08-23

1993-03-23

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

3701101, H04J 312

Patent

active

051970686

ABSTRACT:
A method of providimg two-way communication between a plurality of channel units in a channel bank and a line interface circuit of a telephone system utilizing a receive direction protocol and a separate transmit direction protocol. The receive direction protocol identifies the channel unit to which provisioning data is to be delivered, increases the bandwidth of the voice data region in the time slot corresponding to the identified channel unit, superposes the provisioning data in the time slot with the voice data, and delivers the superposed data to the channel unit wherein the provisioning data is separated from the voice data. The transmit direction protocol utilizes the A and B signaling bits corresponding to the eighth bit of an identified time slot in the sixth and twelfth transmit frames wherein two bits of an eight bit status message is delivered on every other superframe. The two-way communication protocols occur without affecting or interfering with the PCM voice data.

REFERENCES:
patent: 4245340 (1981-01-01), Landry
patent: 4627047 (1986-12-01), Pitroda et al.
patent: 4636584 (1987-01-01), Binkerd et al.
patent: 4730312 (1988-03-01), Johnson et al.
patent: 4740963 (1988-04-01), Eckley
patent: 4823342 (1989-04-01), Morita et al.
patent: 4849972 (1989-07-01), Hackett et al.
Bell System Technical Journal entitled "The D4 Digital Channel Bank Family" Nov., 1982, vol. 61, No. 9, Part 3.

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