Priority based methods and apparatus for transmitting accurate emergency location idenitfication numbers (ELINs) from behind a multi-line telephone system (MLTS)
AssigneeSiemens Information and Communication Networks, Inc.
InventorsPeggy M. Stumer, Nissim Ozery, David A. Vander Meiden, Richard Frank, Dennis Kucmerowski
Life of this patent
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Abstract
Methods for accurate transmission of ELIN/callback number from an emergency caller calling from behind a PBX/MLTS include prioritizing the emergency call, 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.
Claims14
A method for processing an emergency call made from behind a PBX/MLTS, said method comprising the steps of:
- a) within the PBX/MLTS determining whether dialed digits represent an emergency number;
- and
- b) assigning priority within the PBX/MLTS to a call determined to be an emergency call.
An apparatus for processing an emergency call made from behind a PBX/MLTS, said apparatus comprising:
- a) means within the PBX/MLTS for determining whether dialed digits represent an emergency number;
- and
- b) means for assigning priority within the PBX/MLTS to a call determined to be an emergency call.
Dependencies are inferred from the claim text.