Interoperability of Legacy Alarm System

• US 20110044318A1
• Filed: 08/18/2009
• Published: 02/24/2011
• Est. Priority Date: 08/18/2009
• Status: Active Grant

• Current Assignee: Cable Television Laboratories Incorporated
• Original Assignee: Cable Television Laboratories Incorporated
• Inventors: McKibben, Bernard, Channabasappa, Sumanth, Cardona, Eduardo, Hoggan, Stuart, Sharma, Sandeep
• Granted Patent: US 8,391,277 B2
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 12/2825 Reporting to a device located outside the home and the home network access arrangements H04L12/2856; for remote control or remote monitoring of applications H04L67/025; telephonic communication systems adapted for combination with telemetering systems H04M11/002
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 65/1106 Call signalling protocols; H.323 and related
• CPC Class Codes: H04M 7/0069 comprising a residential gateway, e.g. those which provide an adapter for POTS or ISDN terminals

Abstract

A base station and system configured to support interfacing digital and analog devices with a legacy alarm system in a manner that allows messages from the legacy alarm system to pre-empt other messaging, if needed, when the messaging takes place through the same gateway as that which is used by the legacy alarm system.

Claims

1. A base station for supporting communications over a VoIP network, including communications used to support cordless phone calls, analog phone calls, and transmission of an alarm message from a legacy alarm system, the base station comprising:

a housing having an output port for exchange signals with the VoIP network and at least one input port for exchanging signals with a cordless phone handset, an analog line, and the legacy alarm system;

a cordless phone transceiver within the housing, the cordless phone transceiver configured to exchange digital signaling with the cordless phone handset in order to support a cordless phone call;

an analog line adaptor within the housing, the analog line adaptor configured to convert analog signaling used to support an analog phone call over a plain old telephone system (POTS) phone line into digital signaling; and

a media terminal adaptor (MTA) within the housing, the MTA configured to interface the digital signaling and the alarm messaging from the cordless phone transceiver and the analog line adaptor with the VoIP network according to a prioritization scheme, the prioritization scheme requiring the MTA to interrupt a phone call supported by the cordless phone transceiver upon determining a need for the legacy alarm system to transmit the alarm message over the VoIP network.

2. The base station of claim 1 wherein the MTA determines the need for the legacy alarm system to transmit the alarm message upon receipt of an interrupt message sent from a disconnect detector included within the housing.

3. The base station of claim 2 wherein the disconnect detector sends the interrupt message upon detecting seizure of the POTS phone line by the legacy alarm system.

4. The base station of claim 1 wherein the MTA determines the need for the legacy alarm system to transmit the alarm message upon receipt of an interrupt message sent from a priority switch included within the housing to monitor activity from the legacy alarm system.

5. The base station of claim 1 further comprising a first port for the cordless phone transceiver, a second port for the POTS phone line, and a third port for the legacy alarm system, wherein the MTA determines the need for the legacy alarm system to transmit the alarm message upon receipt of any signal from the third port.

6. The base station of claim 1 wherein the MTA determines the need for the legacy alarm system to transmit the alarm message upon receipt of a message from an air interface adaptor configured to cordlessly communicate the alarm message with the cordless phone transceiver.

7. A base station for interfacing digital and analog telephone calls with a telephony network comprising:

an adaptor configured to interface digital and analog telephone signaling used to support digital and analog telephone calls with the telephony network; and

a priority controller in communication with the adaptor, the priority controller configured to pre-empt both digital and analog telephone calls in the event a legacy alarm system needs to transmit an alarm message with the use of analog telephone signaling, the legacy alarm system characterized by an inability to seize the digital telephone signaling.

8. The base station of claim 7 further comprising a cordless phone receiver configured to exchange digital telephone signaling used to support digital phone calls with a cordless phone handset.

9. The base station of claim 8 further a first analog line adaptor configured to exchange analog telephone signaling used to support analog telephone calls with a POTS telephone.

10. The base station of claim 9 further comprising an RJ-11 interface between the first analog line adaptor and the POTS telephone.

11. The base station of claim 9 where further comprising a disconnect detector configured to transmit an interrupt message to the adaptor upon detecting the legacy alarm system attempting seizure of an analog telephone line connected to the POTS telephone, the interrupt message instructing the adaptor as to the need of the legacy alarm system to transmit the alarm message.

12. The base station of claim 9 further comprising a priority switch configured to switch the adaptor into communication with one of but not both of the POTS telephone and the legacy alarm system based on upon activity detected from the legacy alarm system.

13. The base station of claim 12 wherein the priority switch is configured to transmit an interrupt message to the adaptor upon detecting activity from the legacy alarm system, the interrupt message instructing the adaptor as to the need of the legacy alarm system to transmit the alarm message.

14. The base station of claim 9 further comprising a second analog line adaptor configured to exchange analog telephone signaling with the legacy alarm system, wherein the adaptor is configured to automatically pre-empt any telephone calls associated with the first analog line adaptor and the cordless phone transceiver upon detecting activity from the second analog line adaptor.

15. The base station of claim 8 wherein the adaptor determines the need for the legacy alarm system to transmit the alarm message upon receipt of information specified with a DECT message received form the cordless phone transceiver.

16. The base station of claim 7 further comprising a detector configured to detect the need of the legacy alarm system to transmit the alarm message based upon sensing mechanical movement of a component used by the legacy alarm system to seize a POTS telephone line used to connect the legacy alarm system to the base station, wherein the detector senses mechanical movement when the component moves between first and second positions.

17. The base station of claim 16 wherein the component prevents signals from a POTS telephone serially connected to the legacy alarm system from reaching the adaptor.

18. A method of supporting interoperability of a legacy alarm system with a digital telephony network, the legacy alarm system being configured to communicate analog alarm messages upon successful seizure of a POTS telephone line, the POTS telephone line being included at a location protected by the legacy alarm system, the location including a base station configured to interface alarm messages and cordless phone calls with the digital telephony network, the method comprising:

automatically detecting an attempt of the legacy alarm system to seize the POTS telephone line as a function of a sensed operating change in the legacy alarm system, the attempt being determined without requiring the legacy alarm system to transmit a message or to otherwise indicate seizure of the POTS telephone line; and

in the event a cordless phone call is taking a place at the time the attempt of the legacy alarm system to seize the POTS telephone line is detected and the base station is unable to support both the cordless phone call and transmission of an alarm message, automatically interrupting the cordless phone call in order to permit transmission of the alarm message.

19. The method of claim 18 further comprising interrupting the cordless phone call according to a pre-defined priority schedule embedded within the base station.

20. The method of claim 19 further comprising preventing interruption of the cordless phone call if the priority schedule indicates the cordless phone call to have a higher priority than the alarm message.