Method and apparatus for analyzing events in a telecommunications system
First Claim
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1. A system for determining the status of a telecommunications circuit, including:
- (a) a monitoring device located at a network interface between the telecommunications circuit and a customer installation, generating data derived from the content of signals received by the monitoring device from the circuit and transmitting the generated data; and
(b) a sectionalizer device, coupled by the circuit to the monitoring device, receiving said generated data from the monitoring device, detecting when an Event has occurred, and determining, based upon the generated data, in which portion of the circuit from among multiple circuit portions the Event originated;
wherein signals transmitted over the circuit include both a payload and overhead, and the signals received by the sectionalizer device from the monitoring device indicate both inability to detect a payload and degradation of the signal due to errors in either the payload or the overhead.
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Abstract
A method and apparatus for automated sectionalization of a DS1/DS3 data path based upon information received at a single location along the path. A test and monitor device is located at a point of demarcation between an LEC and an IEC. A Remote Module is located at a point of demarcation between the LEC and CPE. The test and monitor device is fully ANSI compatible. The information that is received is processed in a three step process in order to generate a “Sectionalizer Report”. In preparing the Sectionalizer Report, the information output from a filter is used to determine where particular Events originated.
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Citations
40 Claims
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1. A system for determining the status of a telecommunications circuit, including:
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(a) a monitoring device located at a network interface between the telecommunications circuit and a customer installation, generating data derived from the content of signals received by the monitoring device from the circuit and transmitting the generated data; and (b) a sectionalizer device, coupled by the circuit to the monitoring device, receiving said generated data from the monitoring device, detecting when an Event has occurred, and determining, based upon the generated data, in which portion of the circuit from among multiple circuit portions the Event originated; wherein signals transmitted over the circuit include both a payload and overhead, and the signals received by the sectionalizer device from the monitoring device indicate both inability to detect a payload and degradation of the signal due to errors in either the payload or the overhead. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for dividing a data path into a plurality of legs and determining in which of the plurality of legs an Event has originated, including:
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(a) a monitoring device capable of monitoring signals on the data path to detect either one or more Events or a signal indicative of an occurrence of one or more Events, the placement of the monitoring device defining a first end of a first, second, third and fourth leg, the second end of the first and second leg being defined by a terminating device; and (b) sectionalizer device coupled to the monitoring device over the third and fourth leg of the data path adapted to receive signals from the monitoring device indicating in which leg one of the Events originated based upon the received signals, the placement of the sectionalizer device defining the second end of the third and fourth leg; wherein signals transmitted over the circuit include both a payload and overhead, and the signals received by the sectionalizer device from the monitoring device indicate both inability to detect a payload and degradation of the signal due to errors in either the payload or the overhead. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A system for generating information regarding the origin of Events in a data path and determining the origin of the Events based upon the generated information, including:
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(a) at least one monitoring device capable of monitoring signals on the data path to detect either the Events or a signal indicative of an occurrence of one of the Events; and (b) a sectionalizer device coupled to the at least one monitoring device for receiving data indicating which of the at least one monitoring devices has detected either one of the Events or a signal indicative of an occurrence of one of the Events, and for determining the data path origin of the Event based upon the received signals; wherein the Events include detection of; a loss of signal; alarm condition; out of frame condition; cyclic redundancy check errors; framesynchronizationbit errors; presence of an alarm indication signal; presence of a remote alarm indication; line code violation; controlled slip; and excess zeros; wherein the monitoring device transmits a variant of a conventional alarm indication signal in response to detection of conditions which would otherwise lead to transmission of an alarm indication signal from the customer installation; and wherein the variant of the alarm indication signal is a pattern of unframed ones in which a portion of the pattern has been modified to include a predetermined number of zeros. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A system for generating information regarding the origin of Events in a data path and determining the origin of the Events based upon the generated information, including:
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(a) at least one monitoring device capable of monitoring signals on the data path to detect either the Events or a signal indicative of an occurrence of one of the Events; and (b) a sectionalizer device coupled to the at least one monitoring device for receiving data indicating which of the at least one monitoring devices has detected either one of the Events or a signal indicative of an occurrence of one of the Events, and for determining the data path origin of the Event based upon the received signals; and a test and monitoring device disposed within a local exchange carrier, wherein the sectionalizer device is disposed within the test and monitoring device; wherein the test and monitoring device is adapted to transfer signals received from a first of the at least one monitoring device to a second of the at least one remote monitoring device, monitor signals received from the first remote monitoring device, transfer signals received from the second remote monitoring device to the first remote monitoring device, and monitor the signals received from the second remote monitoring device. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A sectionalizer within a system for determining the status of a telecommunications circuit, having a monitoring device located between the telecommunications circuit and a customer installation for generating data derived from the content of signals received by the monitoring device over the circuit and transmitting the generated data, the sectionalizer including:
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(a) receiving means for receiving the generated data from the monitoring device; (b) detecting means, coupled to the receiving means for detecting that one or more Events have occurred; and (c) determining means, coupled to the detecting means and the receiving means, for determining, based upon the received data and in response to detection of one of the Events by the detecting means, in which portion of the circuit from among multiple circuit portions the Event originated; wherein signals transmitted over the circuit include both a payload and overhead, and the signals received by the sectionalizer device from the monitoring device indicate both inability to detect a payload and degradation of the signal due to errors in either the payload or the overhead. - View Dependent Claims (30, 31, 32, 33, 34, 35)
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36. A sectionalizer within a system for generating information regarding the origin of one or more Events in a data path and determining the origin of the respective Event based upon the generated information, having at least a first and second remote monitoring device each capable of monitoring signals on the data path to detect either the Event or a signal indicative of an occurrence of the Event, the sectionalizer including:
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(a) a sectionalizer device adapted to be coupled to the at least one monitoring device, and including; (1) a receiver which receives signals indicating which of the first and second remote monitoring devices has detected either the Event or a signal indicative of an occurrence of the Event; and (2) a processing device for determining the origin of the Event based upon the received signals; further including a test and monitoring device disposed within a local exchange carrier, wherein the sectionalizer device is disposed within the test and monitoring device; wherein the test and monitoring device transfers signals received from the first remote monitoring device to the second remote monitoring device, monitoring signals received from the first remote monitoring device, transferring signals received from the second remote monitoring device to the first remote monitoring device, and monitoring the signals received from the second remote monitoring device. - View Dependent Claims (37, 38, 39, 40)
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Specification