Systems and methods for automatic public switched telephone network backup of Voice over Internet Protocol services
First Claim
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1. A method of providing a backup public switched telephone network (PSTN) line to a broadband network connection, comprising:
- detecting unavailability of the broadband network connection; and
automatically connecting local site wiring to the PSTN line responsive to detecting unavailability of the broadband network connection and disconnecting local site wiring from the PSTN line when unavailability is not detected.
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Accused Products
Abstract
A backup public switched telephone network (PSTN) line is provided to a broadband network connection by detecting unavailability of the broadband network connection and automatically connecting local site wiring to the PSTN line responsive to detecting unavailability of the broadband network connection and disconnecting local site wiring from the PSTN line if unavailability is not detected.
81 Citations
30 Claims
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1. A method of providing a backup public switched telephone network (PSTN) line to a broadband network connection, comprising:
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detecting unavailability of the broadband network connection; and
automatically connecting local site wiring to the PSTN line responsive to detecting unavailability of the broadband network connection and disconnecting local site wiring from the PSTN line when unavailability is not detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for providing public switched telephone network (PSTN) line backup to a voice over a packet protocol service, comprising:
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a local device configured to drive local site wiring when the voice over a packet protocol service is being used; and
a switch configured to disconnect the PSTN line from the local site wiring if the local site wiring is being driven by the local device and connect the PSTN line to the local site wiring if the local site wiring is not being driven by the local device. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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- 24. A device for providing PSTN line backup to local telephone service, comprising a relay between local site wiring and the PSTN line and configured to disconnect the PSTN line from the local site wiring if a current greater than a current supplied by the PSTN line is not supplied to the local site wiring.
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26. A system for providing a backup public switched telephone network (PSTN) line to a broadband network connection, comprising:
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means for detecting unavailability of the broadband network connection; and
means for automatically connecting local site wiring to the PSTN line responsive to detecting failure of the broadband network connection and disconnecting local site wiring from the PSTN line if a failure is not detected. - View Dependent Claims (27, 28)
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29. A network adapter for providing voice over a packet protocol service, comprising:
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a modem circuit configured to communicate over a broadband data line;
a terminal adapter circuit configured to receive signals from the local site wiring corresponding to communications to be sent over the broadband data line by the modem circuit;
a controller circuit configured to detect availability of a broadband connection using the broadband data line; and
a local wiring drive circuit configured to selectively provide power to the local site wiring responsive to the availability of the broadband connection using the broadband data line. - View Dependent Claims (30)
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Specification