US 5,347,568 AGranted

Emergency call station identification system

AssigneeTelident, Incorporated

InventorsMartin Moody, Donald Madson, Gordan Osgood

Life of this patent

Estimating the term…

Loading patent…

Abstract

A device for identifying a specific station, among a plurality of geographically-dispersed stations represented by a common phone number and serviced by a common PBX, which has initiated an emergency "9-1-1" telephone call. The specific station having initiated the call is identified to the appropriate public safety answering point (PSAP) which is connected in an enhanced "9-1-1" emergency call network. Typically, the PSAP and PBX have different protocols. The device functions to convert the protocol of the PBX to the protocol of the emergency call network. Further, it assigns an arbitrary designation representing the specific station identified as having initiated the emergency call. Further, the invention transmits the arbitrary designation to the appropriate PSAP for responding to the call.

Claims5

Dependent claims

Apparatus for identifying, to an appropriate public safety answering point (PSAP) connected in a "9-1-1" emergency call network having a designated protocol, a specific station, of a plurality of geographically-dispersed stations represented by a common phone number identifiable by the "9-1-1" emergency call network and serviced by a private branch exchange (PBX) having a different protocol, initiating a "9-1-1" emergency call, comprising:

(a) means for assigning an arbitrary designation representing a specific station identified as having initiated a "9-1-1" emergency call, and for transmitting said arbitrary designation to the appropriate PSAP;
and
(b) means, integral in a common module with said assigning means, for harmonizing, prior to entry of the emergency call into the "9-1-1" emergency call network, the PBX protocol with the protocol of the "9-1-1" emergency call network;
(c) wherein the PSAP identifies the specific station having initiated the "9-1-1" emergency call based upon said arbitrary designation;
and
(d) wherein the PSAP identifies the specific station having initiated the "9-1-1" emergency call without the need of any companion equipment to said module.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/089,846Filed 9 Jul 1993 · continuation
Priority: 17 Apr 1991
Granted: 13 Sep 1994
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04Q 3/72
Selecting arrangements: finding out and indicating number of calling subscriber
H04M 3/42314
Systems providing special services or facilities to subscribers: in private branch exchanges
H04M 3/42042
Calling party identification service: notifying the called party of information on the calling party
H04M 2242/04
Special services or facilities: for emergency applications