Methods and apparatus for transmitting accurate emergency location identification numbers (ELINs) from behind a multi-line telephone system (MLTS) after an emergency caller disconnects
First Claim
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1. A method for processing an emergency call made from behind a PBX/MLTS using an analog or digital telephonic device, said method comprising the steps of:
- (a) retrieving attributes of the telephonic device from which said emergency call was made from a database of attributes associated with each of said telephonic devices, said attributes comprising at least one ELIN and callback number for each telephonic device;
(b) storing one or more of said attributes in an emergency call information buffer at the PBX/MLTS;
(c) upon detecting an on-hook event, at the telephonic device from which the emergency call was made, autonomously transmitting one or more of said attributes from the buffer to an emergency call handling center prior to disconnecting the call at the PBX/MLTS.
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Abstract
The invention is directed to methods for accurate transmission of ELIN/callback number from an emergency caller calling from behind a PBX/MLTS include assigning a port equipment number to each device/trunk of the PBX/MLTS and associating ports/devices with ELINs and callback numbers. The apparatus of the invention detects an emergency number, assigns the call priority, and uses the port/device number to determine the ELIN/callback number and properly transmit the ELIN/callback number optionally first over a private network and to the public network PSAP.
63 Citations
20 Claims
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1. A method for processing an emergency call made from behind a PBX/MLTS using an analog or digital telephonic device, said method comprising the steps of:
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(a) retrieving attributes of the telephonic device from which said emergency call was made from a database of attributes associated with each of said telephonic devices, said attributes comprising at least one ELIN and callback number for each telephonic device;
(b) storing one or more of said attributes in an emergency call information buffer at the PBX/MLTS;
(c) upon detecting an on-hook event, at the telephonic device from which the emergency call was made, autonomously transmitting one or more of said attributes from the buffer to an emergency call handling center prior to disconnecting the call at the PBX/MLTS. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 19)
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10. An apparatus for processing an emergency call made from behind a PBX/MLTS using an analog or digital telephonic device, said apparatus comprising:
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(a) a database of attributes associated with each of the telephonic devices from which said emergency call was made, said attributes comprising at least one ELIN and callback number associated with each of the devices/trunks coupled to the PBX/MLTS;
(b) retrieval means coupled to said database for retrieving one or more of said attributes from said database;
(c) buffer means coupled to said retrieval means for temporarily storing one or more of retrieved attributes at the PBX/MLTS;
(d) transmitting means coupled to said buffer means for autonomously transmitting one or more of said retrieved attributes to an emergency call handling center upon detecting an on-hook event at the telephonic device and prior to disconnecting the call at the PBX/MLTS. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 20)
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Specification