DEVICE AND METHOD FOR DETECTING PRESENCE OF SERVICE ON TELEPHONE LINE
A device and a method for detecting presence of service on a telephone line prior to and during activation of alternative service on the line. The method comprises performing a first voltage detection on a subscriber line (S 20 ), activating a subscriber line interface circuit (SLIC) if no pre-exist...
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Main Authors | , |
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Format | Patent |
Language | English French German |
Published |
31.08.2011
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Subjects | |
Online Access | Get full text |
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Summary: | A device and a method for detecting presence of service on a telephone line prior to and during activation of alternative service on the line. The method comprises performing a first voltage detection on a subscriber line (S 20 ), activating a subscriber line interface circuit (SLIC) if no pre-existing service is detected (S 30 ), the SLIC providing an interface between the subscriber line and a service provider, and performing a second voltage detection on the subscriber line after a usage-dependent time has elapsed (S 60 ), the time being determined by heuristics which consider several factors, including usage history of the line and time of day. |
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Bibliography: | Application Number: EP20030800309 |