Line-based public safety answering point
First Claim
1. A system for delivering emergency information from a telephone to an operator station in a public safety answering point (PSAP) through a public telephone network in response to an emergency number entered at said telephone, said telephone having an automatic number identification (ANI) defining a billing number of said telephone and a calling party number (CPN) defining a directory number of said telephone, said system comprising:
- a switch in said public telephone network which terminates a connection to said operator station, said switch including a plurality of termination ports;
a line directly connecting said operator station to one of said plurality of termination ports of said switch, said line providing a voice path and a separate data path between said operator station and said switch, which line is exclusively used by said operator station;
means at said switch for transmitting on said separate data path said CPN of said telephone to said operator station;
means connected to said telephone network for storing location information of said telephone in accordance with its CPN; and
means at said operator station for obtaining and displaying said location information of said telephone.
4 Assignments
0 Petitions
Accused Products
Abstract
A line-based 911 system and method that completes an emergency call from a telephone to a PSAP comprising a multiplicity of operator stations connected by individual lines to a telephone switching system. An emergency call is routed to the termination ports of the switching system associated with a PSAP. Each of the termination ports is connected to one of the multiplicity of operator stations via its associated line, thereby establishing a path from the telephone to the operator station, the CPN of the calling telephone is delivered to the selected operator station and the operator station obtains location information of the telephone in accordance with the CPN, which is then displayed.
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Citations
17 Claims
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1. A system for delivering emergency information from a telephone to an operator station in a public safety answering point (PSAP) through a public telephone network in response to an emergency number entered at said telephone, said telephone having an automatic number identification (ANI) defining a billing number of said telephone and a calling party number (CPN) defining a directory number of said telephone, said system comprising:
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a switch in said public telephone network which terminates a connection to said operator station, said switch including a plurality of termination ports; a line directly connecting said operator station to one of said plurality of termination ports of said switch, said line providing a voice path and a separate data path between said operator station and said switch, which line is exclusively used by said operator station; means at said switch for transmitting on said separate data path said CPN of said telephone to said operator station; means connected to said telephone network for storing location information of said telephone in accordance with its CPN; and means at said operator station for obtaining and displaying said location information of said telephone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of providing emergency telephone service in a public telephone network, said telephone network comprising telephone switching systems, each having a plurality of telephones connected thereto, each of said telephones having an automatic number identification (ANI) defining a billing number and a calling party number (CPN) defining a directory number, and at least one public safety answering point (PSAP) connected to a selected one of said switching systems, said PSAP having a multiplicity of operator stations connected to said selected one of said switching systems by a corresponding multiplicity of lines, each of said lines providing a voice path and a separate data path between its operator station and said selected one of said switching systems said method comprising:
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one of said switching systems receiving an emergency call from one of said plurality of telephones connected thereto; said one of said switching systems routing said emergency call to said selected one of said switching systems connected to said PSAP; transmitting said CPN of said one of said plurality of telephones to said selected one of said switching systems delivering said CPN of said one of said plurality of telephones to one of said multiplicity of operator stations over said data path of one of said lines between said one of said multiplicity of operator stations and said selected one of said switching systems said one of said multiplicity of operator stations retrieving location information associated with said one of said plurality of telephones based on said delivered CPN; and displaying said location information at said one of said multiplicity of operator stations. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification