Priority based methods and apparatus for transmitting accurate emergency location identification numbers (ELINs) from behind a multi-line telephone system (MLTS)
AssigneeSiemens Communications, Inc.
InventorsPeggy M. Stumer, Nissim Ozery, David A. Vander Meiden, Richard Frank, Dennis Kucmerowski
Life of this patent
Estimating the term…
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.
Claims11
A method for processing an emergency call made from behind a PBX/MLTS coupled to a private network, said method comprising the steps of:
- a) within the PBX/MLTS determining whether dialed digits represent an emergency number;
- b) assigning priority within the PBX/MLTS to a call determined to be an emergency call, such that said call takes priority over other calls in traversing said private network before reaching a public network trunk;
- c) storing a port equipment number for each device/trunk in the PBX/MLTS;
- and
- d) associating a callback number with each port equipment number.
A method for processing an emergency call made from behind a PBX/IMLTS coupled to a private network, said method comprising the steps of:
- a) within the PBX/MLTS determining whether dialed digits represent an emergency number;
- b) assigning priority within the PBX/MLTS to a call determined to be an emergency call, such that said call takes priority over other calls in traversing said private network before reaching a public network trunk;
- c) storing a port equipment number for each device/trunk in the PBX/IMLTS;
- and d) associating an emergency location identification number (ELIN) and a callback number with each port equipment number.
An apparatus for processing an emergency call made from behind a PBX/MLTS coupled to a private network, said apparatus comprising:
- a) means within the PBX/MLTS for determining whether dialed digits represent an emergency number;
- b) means for assigning priority within the PBX/MLTS to a call determined to be an emergency call, such that said call takes priority over other calls in traversing said private network before reaching a public network trunk;
- c) means for storing a port equipment number for each device/trunk in the PBX/MLTS;
- and
- d) means for associating a callback number with each port equipment number.
An apparatus for Processing an emergency call made from behind a PBX/MLTS coupled to a private network, said apparatus comprising:
- a) means within the PBX/MLTS for determining whether dialed digits represent an emergency number;
- b) means for assigning priority within the PBX/MLTS to a call determined to be an emergency call, such that said call takes priority over other calls in traversing said private network before reaching a public network trunk;
- c) means for storing a port equipment number for each device/port in the PBX/MLTS;
- and
- d) means for associating an emergency location identification number (ELIN) and a callback number with each port equipment number.
Dependencies are inferred from the claim text.