Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of repeater
Patent
1991-11-13
1995-06-06
Dwyer, James L.
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Of repeater
379338, 379344, 379347, 371 201, 371 202, 370 13, 370 855, H04B 346
Patent
active
054229294
ABSTRACT:
A telephone line repeater (28) includes a pattern decoder/recognizer (100) which recognizes, inter alia, an input interrogating signal transmitted on a telephone network (20). The interrogating signal includes an address field (302) having at least one subfield (304) therein. The pattern decoder (100) determines that its repeater (28) is to be tested, if a predetermined subfield (304) of the interrogating signal is configured according to a predetermined select convention. When the repeater (28) recognizes that it is being addressed, a controller (110) causes the addressed repeater to "loop back", returning, in alternating sequence, test-indicative no-operation signals and diagnostic information ("DSM") signals generated by the repeater. Methods for testing a repeater and methods for testing telephone networks are also disclosed.
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Westell, 030-100352 Rev. P8, "T1 Line Repeater With Addressable Loopback Plus,", Section 3150-00-100, Issue A, Apr. 1991.
Westell, 030-200119 Rev A., "T1 Office Repeater With Addressable Loopback", Apr. 1990.
Westell, 030-100309 Rev. A, "3130-01 T1 Office Repeater With Addressable Loopback", Section 3130-00-100, Issue A, Dec. 1990.
Westell, 030-100292 Rev. A, "3112-52 T1 Facility Loopback Unit", Section 3112-52-100, Issue A, April 1990.
Westell, 030-100311 Rev. A, "3117-XX Family of T1 Extension Repeaters", Section 3117-XX-100, Issue A, Apr. 1990.
Westell, 030-200108 Rev A, "Family of T1 Extension Repeaters", Feb. 1990.
Hurst George J.
Sturbois Joseph F.
Dwyer James L.
Shehata M.
TXPORT, Inc.
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