Telecommunications system for accessing subscriber premises equipment using ring suppression

• US 5,737,400 A
• Filed: 02/27/1996
• Issued: 04/07/1998
• Est. Priority Date: 02/27/1996
• Status: Expired due to Fees

• Current Assignee: U-TEC Corporation
• Original Assignee: U-TEC Corporation
• Inventors: Wilder, Richard, Bagchi, Debashis
• Primary Examiner(s): Kuntz, Curtis
• Assistant Examiner(s): LOOMIS, PAUL A
• Application Number:
  US08/607,602
• Time in Patent Office: 770 Days
• Field of Search: 379/93, 379/94, 379/95, 379/96, 379/106, 379/107, 379/102, 379/104, 379/105, 379/133, 379/140, 379/142, 379/156, 379/157, 379/177, 379/179, 379/180, 379/181, 379/188, 379/189, 379/196, 379/199, 379/198, 379/201, 379/372, 379/373, 379/375, 379/376
• US Class Current: 379/142.01
• CPC Class Codes: H04M 1/663 Preventing unauthorised calls to a telephone set
• CPC Class Codes: H04M 11/002 with telemetering systems telemetering in general G08C

Abstract

A no-ring access telecommunications system is connected to a subscriber'"'"'s telephone line at the demarcation point between the public switched telephone network and the telephone line or at the utility meter site on the subscriber'"'"'s premises, or at a central office. The telecommunications system comprises a processor, and a normally open switch which is selectively closed by the processor to connect the telephone line to another line servicing subscriber telecommunications equipment connected in parallel thereto. The telecommunications system is programmable to suppress the first power ring signal of an incoming call on the telephone line from a remote host system. The ring signal is analyzed for Caller ID, distinctive ringing or other special tone. If a valid Caller ID, distinctive ring signal or other special tone is provided, the switch is closed. The Caller ID is regenerated on the line servicing the subscriber telecommunications equipment. The subscriber telecommunications equipment is configured to monitor the line servicing it and to establish a connection with the host system or calling party when an incoming call is directed to it. The telecommunications system monitors the same line for an off-hook signal and can interrupt a data call to service a voice call. The telecommunications system is also programmable to remotely control an appliance via signals on a power line, or utility meters via a radio frequency transceiver, in response to a request by a host system via the telephone line.

Claims

1. A method of accessing one of a telephone and a data communication device from a remote data communication system via a telephone line extending to a subscriber'"'"'s premises from a telecommunications network, comprising the steps of:

operating a switching device connected to said telephone line to open circuit said telephone line between said telecommunications network and said telephone;

receiving a first ring signal and caller identification data from said network, said caller identification data corresponding to said remote data communication system and being generated after said first ring signal, said telephone being prevented from receiving said first ring signal by said switching device;

determining from said caller identification data to which one of said telephone and said data communication device said call is directed;

operating said switching device to complete a circuit in said telephone line between said telecommunications network and said telephone if said call is directed to said telephone;

receiving a second ring signal from said network, said second ring signal being provided to said telephone line via said switching device; and

regenerating said caller identification data to supply said caller identification data to said telephone line after said second ring signal if said call is directed to said telephone.

2. A method as claimed in claim 1, wherein said data communication device is connected to said telephone line and said operating step further comprises the step of operating said switching device to close circuit said telephone line between said telephone and said network if said call is directed to said data communication device.

3. A method as claimed in claim 2, further comprising the steps of:

receiving device identification data from said remote data communication system;

monitoring said telephone line using said data communication device, said data communication device being operable to determine whether said device identification data is valid for said data communication device; and

operating said data communication device to go off-hook if said device identification data is valid.

4. A method as claimed in claim 3, further comprising the steps of:

operating said data communication device to go off-hook when said caller identification data is valid for said data communication device; and

connecting said remote data communication system corresponding to said caller identification data to said data communication device.

5. A method as claimed in claim 4, further comprising the step of monitoring said telephone line to determine whether said telephone goes off-hook.

6. A method as claimed in claim 5, further comprising the steps of:

interrupting said connecting step; and

providing a dial tone from said network to said telephone when said telephone goes off-hook.

7. A method as claimed in claim 4, wherein said data communication device operates using a script language to allow said data telecommunications device to provide analog display services via said telephone line, and further comprising the steps of:

translating signals received from said calling party into said script language and providing said translated signals to said data telecommunications device; and

translating signals generated by said data telecommunications device in said script language into signals recognized by said calling party.

8. A method as claimed in claim 1, wherein said call is directed to said data communication device and said data communication device is controllable by a wireless communication link and further comprising the steps of:

maintaining said telephone line between said telephone and said network in an open circuit using said switching device;

receiving device identification data from said remote data communication system;

generating a wireless control signal for said data communication device in response to said first ring signal;

transmitting said wireless control signal to said data communication device, said control signal comprising said device identification data;

monitoring said wireless communication link using said data communication device, said data communication device being operable to determine whether said device identification data is valid for said data communication device; and

operating said data communication device to communicate with said remote data communication system via said wireless communication link if said device identification data is valid.

9. A method as claimed in claim 1, wherein said call is directed to said data communication device and said data communication device is connected to a second line and further comprising the steps of:

maintaining said telephone line between said telephone and said network in an open circuit using said switching device;

receiving device identification data from said remote data communication system;

generating a control signal directed to said data communication device on said second line in response to said first ring signal, said control signal comprising said device identification data;

monitoring said second line using said data communication device, said data communication device being operable to determine whether said device identification data is valid for said data communication device; and

operating said data communication device to communicate with said remote data communication system via said second line if said device identification data is valid.

10. A method as claimed in claim 9, wherein said second line is a power line.

11. A method as claimed in claim 1, wherein said regenerating step comprises the step of deferring supply of said caller identification data to said telephone line until after a ring signal is received from said network which is subsequent to said second ring signal.

12. A method of accessing one of a telephone and a data communication device from a remote data communication system via a telephone line extending to a subscriber'"'"'s premises from a telecommunications network, comprising the steps of:

operating a switching device connected to said telephone line to open circuit said telephone line between said network and said telephone;

receiving one of a first ring signal and a second ring signal from said network, said first ring signal characterized by a distinctive ringing pattern corresponding to said remote data communication system, said second ring signal being accompanied by a caller identification number corresponding to said remote data communication system, said telephone being prevented from receiving said first ring signal and said second ring signal by said switching device;

determining, if said first ring signal is received, whether said first ring signal corresponds to one of a plurality of distinctive ring patterns stored in a memory device and said call is directed to said data communication device;

determining, if said second ring signal is received, whether said caller identification number corresponds to one of a plurality of caller identification numbers stored in said memory device and said call is directed to said data communication device;

operating said switching device to close circuit said telephone line between said network and said telephone if said call is a voice call to be directed to said telephone; and

operating said switching device to close circuit said telephone line between said telephone and said network if said call is a data call to be directed to said data communication device, said data communication device being connected to said telephone line.

13. A method as claimed in claim 12, wherein said call is a voice call to be directed to said telephone and further comprising the steps of:

receiving a second ring signal from said network, said second ring signal being provided to said telephone line via said switching device; and

generating said caller identification number to supply said caller identification number to said telephone after said second ring signal.

14. A method as claimed in claim 12;

further comprising the steps of;

receiving a second ring signal and a number of subsequent ring signals from said network, said second ring signal and said number of subsequent ring signals being provided to said telephone line via said switching device; and

generating said caller identification number to supply said caller identification number to said telephone after one of said number of subsequent ring signals.

15. A method as claimed in claim 12, wherein said data communication device is connected to said telephone line and further comprising the steps of:

monitoring said telephone line to determine if said telephone has gone off-hook;

disconnecting said data communication device; and

providing a dial tone from said network to said telephone when said telephone goes off-hook; and

operating said switching device to open circuit said telephone line.

16. A method as claimed in claim 14, wherein said data communication device is controllable by a wireless communication link and said generating step comprises the steps of:

generating a wireless control signal comprising said device identification data; and

transmitting said wireless control signal to said data communications device via said wireless communication link.

17. A method as claimed in claim 16, further comprising the steps of:

monitoring said wireless communication link using said data communication device, said data communication device being operable to determine whether said device identification data is valid for said data communication device; and

operating said data communication device to communicate with said remote data communication system via said wireless communication link if said device identification data is valid.

18. A method as claimed in claim 14, wherein said data communication device is connected to a second line and said generating step comprises the step of transmitting said control signal to said data communications device via said second line.

19. A method as claimed in claim 18, further comprising the steps of:

monitoring said second line using said data communication device, said data communication device being operable to determine whether said device identification data is valid for said data communication device; and

operating said data communication device to communicate with said remote data communication system via said second line if said device identification data is valid.

20. Apparatus for allowing one of a plurality of remote data communication systems to access a telephone or a data communication device via a telephone line extending to a subscriber'"'"'s premises from a telecommunications network, the apparatus comprising:

a memory device for storing data relating to ring signals and caller identification numbers corresponding to said plurality of remote data communication systems;

an incoming signal detection circuit connected to said network and to said telephone line for detecting a call from said remote data communication system;

a processor connected to said incoming signal detection circuit and to said memory device for processing a first ring signal received from said network to determine whether said first ring signal corresponds to one of said ring signals stored in said memory device, and, if said first ring signal does not correspond to one of said ring signals stored in said memory device, to determine whether a caller identification number received from said network after said first ring signal corresponds to one of said call identification numbers stored in said memory device; and

a switching device connected to said telephone line and operable in response to said processor, said processor being programmable to operate said switching device to open circuit said telephone line between said network and said telephone at least until after said first ring signal.

21. An apparatus as claimed in claim 20, wherein said call is a voice call to be directed to said telephone and said processor is programmable to reproduce and provide said caller identification number received from said network to said telephone line after said switching device close circuits said telephone line between said network and said telephone following said first ring signal.

22. A method of accessing one of a telephone and a data communication device from a remote data communication system via a telephone line extending to a subscriber'"'"'s premises from a telecommunications network, comprising the steps of:

receiving a first ring signal and caller identification data from said network, said caller identification data corresponding to said remote data communication system and being generated after said first ring signal, said telephone being prevented from receiving said first ring signal;

determining from said caller identification data to which one of said telephone and said data communication device said call is directed;

receiving a second ring signal from said network; and

generating said caller identification data to supply said caller identification data to said telephone line after said second ring signal if said call is a voice call to be directed to said telephone.

23. Apparatus for allowing one of a plurality of remote data communication systems to access a telephone or a data communication device via a telephone line extending to a subscriber'"'"'s premises from a telecommunications network, the apparatus comprising:

a memory device for storing data relating to ring signals and caller identification numbers corresponding to said plurality of remote data communication systems;

an incoming signal detection circuit connected to said network and to said telephone line for detecting a call from said remote data communication system;

a processor connected to said incoming signal detection circuit and to said memory device for processing a first ring signal received from said network to determine whether said first ring signal corresponds to one of said ring signals stored in said memory device, and, if said first ring signal does not correspond to one of said ring signals stored in said memory device, to determine whether a caller identification number received from said network after said first ring signal corresponds to one of said call identification numbers stored in said memory device, said processor being programmable to prevent said telephone from receiving said first ring signal and to generate said caller identification number received from said network on said telephone line after a second signal received from said network when said call is a voice call to be directed to said telephone.

24. A method of accessing one of a telephone and a data communication device from a remote data communication system via a telephone line extending to a subscriber'"'"'s premises from a telecommunications network, comprising the steps of:

operating a switching device connected to said telephone line to open circuit said telephone line between said network and said telephone;

receiving one of a first ring signal and a second ring signal from said network, said first ring signal characterized by a distinctive ringing pattern corresponding to said remote data communication system, said second ring signal being accompanied by a caller identification number corresponding to said remote data communication system and generated after said first ring signal, said telephone being prevented from receiving said first ring signal and said second ring signal by said switching device;

determining, if said first ring signal is received, whether said first ring signal corresponds to one of a plurality of distinctive ring patterns stored in a memory device and said call is directed to said data communication device;

determining, if said second ring signal is received, whether said caller identification number corresponds to one of a plurality of caller identification numbers stored in said memory device and said call is directed to said data communication device;

operating said switching device to close circuit said telephone line between said telephone and said network if said call is directed to said data communication device, said data communication device being connected to said telephone line;

receiving device identification data from said remote data communication system;

generating a control signal for said data communication device, said control signal comprising said device identification data;

monitoring said telephone line using said data communication device, said data communication device being operable to determine whether said device identification data is valid for said data communication device; and

operating said data communication device to communicate with said remote data communication system via said telephone line if said device identification data is valid.

25. A method of accessing one of a telephone and a data communication device from a remote data communication system via a telephone line extending to a subscriber'"'"'s premises from a telecommunications network, comprising the steps of:

operating a switching device connected to said telephone line to open circuit said telephone line between said network and said telephone;

receiving one of a first ring signal and a second ring signal from said network, said first ring signal characterized by a distinctive ringing pattern corresponding to said remote data communication system, said second ring signal being accompanied by a caller identification number corresponding to said remote data communication system and generated after said first ring signal, said telephone being prevented from receiving said first ring signal and said second ring signal by said switching device;

determining, if said first ring signal is received, whether said first ring signal corresponds to one of a plurality of distinctive ring patterns stored in a memory device and said call is directed to said data communication device;

determining, if said second ring signal is received, whether said caller identification number corresponds to one of a plurality of caller identification numbers stored in said memory device and said call is directed to said data communication device;

maintaining said telephone line as an open circuit between said telephone and said network using said switching device when said first signal is received;

receiving device identification data from said remote data communication system; and

generating a control signal for said data communication device in response to said first ring signal, said control signal comprising said device identification data.