System and method for accessing embedded channels
First Claim
1. A maintenance system for a signal having a plurality of embedded communication channels, the system comprising:
- a receiver for receiving the signal;
an access circuit for simultaneously accessing at least a portion of the channels, wherein each channel is asynchronous to the signal;
a circuit selectively overwriting one or more bits in at least one of the accessed channels at the signal rate, wherein the bit order of the signal is maintained; and
a performance monitor for continuously monitoring the signal and the accessed channels.
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Accused Products
Abstract
A DS3 level access, monitor and test system for a telephone network. The system provides selective, and hitless, bit overwrite in any of the embedded DS1, DS0 and substrate channels in a DS3 signal. Multiple DS0 and subrate channels can be tested via the asynchronous time slot interchange in conjunction with the recombiner of the present invention. The present invention further includes a lookahead reframer for framing to the DS3 signal. The present invention also includes a facilities data link (FDL) handler for capturing the FDL channel data in every DS1 channel in a DS3 signal. A high speed bit-for-bit compare is interfaced to a protect path to provide 1:1 fault protection in the system of the present invention. Full time performance monitoring on DS1 and DS3 signals is performed by a shared resource. The system of the present invention provides an integrated approach to synchronization measurement and relative synchronization.
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Citations
45 Claims
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1. A maintenance system for a signal having a plurality of embedded communication channels, the system comprising:
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a receiver for receiving the signal; an access circuit for simultaneously accessing at least a portion of the channels, wherein each channel is asynchronous to the signal; a circuit selectively overwriting one or more bits in at least one of the accessed channels at the signal rate, wherein the bit order of the signal is maintained; and a performance monitor for continuously monitoring the signal and the accessed channels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A performance monitoring system for a signal having embedded channels, the system comprising:
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a shared resource providing access to at least a portion of the embedded channels; means for continuously monitoring the accessed channels in the signal, wherein each channel is asynchronous to the signal; a circuit selectively overwriting one or more bits in at least one of the accessed channels at the signal rate, wherein the bit order of the signal is maintained; and means for continuously monitoring the accessed channels simultaneously with the signal. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. In a maintenance system for a signal having a plurality of embedded communication channels, a method of performance monitoring an accessed channel, the method comprising the steps of:
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receiving the signal; simultaneously accessing the channels, wherein each channel is asynchronous to the signal; selectively overwriting one or more bits in at least one of the accessed channels at the signal rate, wherein the bit order of the signal is maintained; and continuously monitoring the signal and the accessed channels. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 36, 37, 38)
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33. A performance monitoring and testing system for a signal having embedded channels, the system comprising:
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a shared resource providing access to at least a portion of the embedded channels; means for continuously monitoring the accessed channels in the signal, wherein each channel is asynchronous to the signal; a circuit selectively overwriting one or more bits in at least one of the accessed channels at the signal rate, wherein the bit order of the signal is maintained; and means for testing at least one accessed channel, wherein the testing and monitoring occur simultaneously. - View Dependent Claims (34, 35)
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39. In a maintenance system for a signal having a plurality of embedded communication channels, a method of performance monitoring and testing an accessed channel, the method comprising the steps of:
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receiving the signal; simultaneously accessing the channels, wherein each channel is asynchronous to the signal; continuously monitoring the signal and the accessed channels; selectively overwriting one or more bits in at least one of the accessed channels at the signal rate, wherein the bit order of the signal is maintained; and testing at least one of the accessed channels, wherein the testing step and monitoring step are performed simultaneously. - View Dependent Claims (40, 41, 42, 43, 44, 45)
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Specification