Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – With blocking of normal usage
Patent
1995-08-31
1998-10-20
Kuntz, Curtis A.
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
With blocking of normal usage
379 1, 379 27, 379 29, 379 32, 37910609, 37910611, H04M 124, H04M 308, H04M 322
Patent
active
058258493
ABSTRACT:
The test system of the invention uses suppressed ringing connections from a test unit to the customer premise equipment via the central office to establish connections for performing the loop-back test. The suppressed ringing connections are established over standard voice trunks between a switch in the central office and the test unit by a central office service unit (COSU) such that the number of lines that can be tested simultaneously is limited only by the number of trunks linking the COSU to a switch. Because these trunks are relatively inexpensive and simple to install and maintain, the test system of the invention can be readily installed and expanded in the existing network to provide virtually any level of monitoring capability.
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Schlumberger, Bulletin 15002, "MAPS.TM. Series, TO-1002 Telephone Outbound Meter Interface Unit," effective May 1995, 2 pp.
Garland Stuart Mandel
Smith David B.
Kuntz Curtis A.
Lucent Technologies - Inc.
Tieu Binh K.
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