Data, path and flow integrity monitor
First Claim
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1. A method of in-service monitoring the integrity of the path and flow of digital PCM data from a source end to a receiving end, comprising:
- (a) generating a pseudo-random sequence of bits with an N-state pseudo-random sequence generator located at the source end where N is an integer greater than 1;
(b) transmitting said pseudo-random sequence of bits together with said PCM data, without modifying the data using said bits, through an in-service transmission path to a receiving end; and
(c) applying said pseudo-random sequence of bits to an N-stage pseudo-random bit sequence checker at the receiving end.
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Abstract
A method of monitoring the integrity of the path and flow of digital PCM data from a source end to a receiving end which includes generating a pseudo-random sequence of bits at the source end, transmitting the pseudo-random sequence of bits together with the PCM data through a transmission path to a receiving end, and applying the pseudo-random sequence of bits to a pseudo-random bit sequence checker at the receiving end.
23 Citations
19 Claims
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1. A method of in-service monitoring the integrity of the path and flow of digital PCM data from a source end to a receiving end, comprising:
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(a) generating a pseudo-random sequence of bits with an N-state pseudo-random sequence generator located at the source end where N is an integer greater than 1; (b) transmitting said pseudo-random sequence of bits together with said PCM data, without modifying the data using said bits, through an in-service transmission path to a receiving end; and (c) applying said pseudo-random sequence of bits to an N-stage pseudo-random bit sequence checker at the receiving end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of in-service monitoring of the integrity of the path and flow of digital PCM data through from a source end to a receiving end comprising:
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(a) generating a pseudo-random sequence of bits at the source end using an N-stage pseudo-random bit sequence generator where N is an integer greater than "1"; (b) transmitting said pseudo-random sequence of bits together with said PCM data, without modifying the data using said bits, through an in-service transmission path to a receiving end; and (c) applying said pseudo-random sequence of bits to an N-stage pseudo-random bit sequence checker at the receiving end; (d) applying an output of a parity generator and said pseudo-random sequence of bits at the source end to respective inputs of a logic circuit; (e) transmitting an output of said logic circuit to said receiving end; and (f) applying the output from said logic circuit at said receiving end to an N-stage pseudo-random bit sequence checker. - View Dependent Claims (10, 11)
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12. Apparatus for in-service monitoring of the integrity of the path and flow of digital PCM data from a source end to a receiving end, comprising:
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(a) an N-stage pseudo-random sequence generator at the source end for generating a sequence of pseudo-random bits where N is an integer greater than "1"; (b) means for transmitting said pseudo-random sequence of bits together with said PCM data along a an in-service transmission path to a receiving end without modifying said PCM data; and (c) an N-stage pseudo-random bit sequence checker at the receiving end having an input coupled to said means for transmitting so as to receive said sequence of pseudo-random bits after transmission through said transmission path. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification