Method and apparatus for sharing of common in-house wiring to permit multiple telephone carriers to serve the same customer

• US 5,341,415 A
• Filed: 09/22/1992
• Issued: 08/23/1994
• Est. Priority Date: 09/22/1992
• Status: Expired due to Term

• Current Assignee: ARRIS Enterprises LLC (CommScope Holding Company, Inc.)
• Original Assignee: Com21, Inc.
• Inventors: Baran, Paul
• Primary Examiner(s): Dwyer, James L.
• Assistant Examiner(s): MATAR, AHMAD
• Application Number:
  US07/949,424
• Time in Patent Office: 700 Days
• Field of Search: 379/201, 379/64, 379/65, 379/66, 379/108, 379/109, 379/114, 379/120, 379/128, 379/140, 379/156
• US Class Current: 379/221.02
• CPC Class Codes: H04M 1/715 using two or more extensions per line cordless telephones H04M1/725
• CPC Class Codes: H04Q 3/625 Arrangements in the private branch exchange

Abstract

A system to allow two or more telephone carriers to automatically connect to existing in-house telephone wiring wherein the choice of carrier is made by the calling party. Service is provided on a default basis by a primary carrier, however, the user can select and cause an alternative carrier to be connected to the in-house wiring permitting the use of standard telephone equipment with different carriers at the option of the calling party. In this system the switching arrangement is such that only one carrier is connected to the in-house wiring at any one time. Additionally, there is provision to detect incoming calls from carriers other than the default primary carrier and to switch to that carrier in response to the incoming call. Further, this system permits the packetization of outgoing information and the receipt of packetized incoming information on the secondary carrier with standard telephone equipment that is connected to the in-house wiring.

Claims

1. A competitive access on premises telephone connection system to allow a telephone user to selectively connect a single in-house telephone wiring circuit, to a primary carrier and to a secondary carrier, said primary and said secondary carriers having separate and independent physical paths, connected to said single in-house wiring circuit are said telephone user'"'"'s telephone sets and telecommunications equipment, said system comprising:

a first remotely controlled switching unit having a first switch connected between said single in-house telephone wiring circuit and said primary carrier with said first switch being normally closed, said first switch disposed to selectively disconnect and interconnect said single in-house telephone wiring circuit to and from said primary carrier on the premises of said telephone user;

a second remotely controlled switching unit having a second switch connected between said single in-house telephone wiring circuit and said secondary carrier with said second switch being normally open, said second switch disposed to selectively interconnect and disconnect said single in-house telephone wiring circuit from and to said secondary carrier on the premises of said telephone user;

an actuation controller coupled to said first switching unit and said second switching unit to individually control the activation of said first switching unit and said second switching unit, and thus the corresponding said first and second switches, to connect or disconnect said single in-house telephone wiring circuit to either said primary carrier or said secondary carrier in response to a selection of carrier made by said telephone user; and

a pair of interlocks, each coupled to a different one of said first and second switching units, with each of said pair of interlocks coupled to and under the control of said actuation controller to prevent closure of an open one of said first and second switches before the opening of a closed one of said first and second switches to prevent the interconnection of said primary carrier and secondary carrier one to the other through said single in-house telephone wiring circuit.

2. A system as in claim 1 further includes a decoder coupled to said single in-house telephone wiring circuit and said actuation controller, said decoder, in response to a preselected one of a set of electronically transmitted codes that correspond to signals that said telephone user initiates via one of said telephone sets and other telecommunications equipment connected to said single in-house telephone wiring circuit with one code to designate said primary carrier and another code to designate said secondary carrier, to signal said actuation controller to actuate the corresponding one of said first and second switching units to connect the telephone user optionally selected primary carrier or secondary carrier to said single in-house wiring circuit through the corresponding one of said first and second switches.

3. A system as in claim 1:

wherein said second switching unit further includes a third switch that is normally open; and

wherein said system further includes a power supply subsystem to generate ringing signals and telephone operating voltages when said second switch is closed thus connecting said single in-house telephone wiring circuit to said secondary carrier;

wherein said third switch of said second switching unit is connected between said single in-house telephone wiring circuit and said power supply subsystem.

4. A system as in claim 1 further includes:

an off-hook detector connected to said single in-house telephone wiring circuit and said actuation controller to generate an off-hook signal when one of said telephone sets or other telecommunications equipment connected to said single in-house telephone wiring circuit is off-hook;

wherein said actuation controller, after receiving off-hook signal and a telephone user entered code preselected to select said secondary carrier, activates said first and second remotely controlled switching units to disconnect said primary carrier from, and to connect said secondary carrier to said single in-house telephone wiring circuit.

5. A system as in claim 1 further includes:

a telephone connection jack disposed to interconnect with said single in-house telephone wiring circuit; and

a standard telephone cable running between said telephone connection jack and said second switch of said second remotely controlled switching unit in an interior wall within a structure of said telephone user.

6. A system as in claim 4 wherein said actuation controller includes a dual tone multifrequency signal detector connected to said single in-house telephone wiring circuit to detect a dual tone multifrequency signal generated by one of said telephone sets and other telecommunications equipment when said telephone user causes said telephone sets and other telecommunications equipment to generate a preselected code signal to select said secondary carrier to be connected to said single in-house telephone wiring circuit.

7. A system as in claim 1 further including a packetizer connected between said second switch of said second remotely controlled switching unit and said secondary carrier to convert signals generated by said telephone sets and other communications equipment connected to said single in-house telephone wiring circuit in response to telephone user actions to enter telephone numbers and other signals caused to be generated by said telephone user via said telephone sets and other communications equipment connected to said single in-house telephone wiring circuit to packetize said signals for transmission to said secondary carrier when said secondary carrier is connected to said single in-house telephone wiring circuit.

8. A system as claim 1 wherein:

said primary carrier is conveyed over a physical local loop telephone line that provides voltage levels and ringing signals; and

said secondary carrier is conveyed over a bi-directional TV cable system.