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Methods and apparatus for processing emergency calling from behind pbx/mlts

A technology for emergency calls and equipment, applied in automatic switching offices, subscriber special services, electrical components, etc., can solve problems such as ringing

Inactive Publication Date: 2012-10-03
SIEMENS INFORMATION & COMM NEWTWORKS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In situations where the call is from a multi-line device, the phone number used for the emergency call may not be the caller's original number, and a call back to that number may ring a different device than the caller's device
Also, the number used by the emergency caller may be associated with an ELIN that is not the caller's

Method used

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  • Methods and apparatus for processing emergency calling from behind pbx/mlts
  • Methods and apparatus for processing emergency calling from behind pbx/mlts
  • Methods and apparatus for processing emergency calling from behind pbx/mlts

Examples

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Embodiment Construction

[0029] figure 1 An overview of an emergency call placed on a Customer Premise Equipment (CPE) 12 within a private network (via MLTS 10) is provided by way of example.

[0030] In accordance with the invention described in the aforementioned example, calls may be routed directly to the public network 14 or first via the private network (via one or more other MLTS 16) to the remotely initiated public network 14. Private network routes may include ISDN (eg, QSIG / PSSI) or analog connection trunks.

[0031]Furthermore, according to the present invention, the ELIN / call-back number is sent to the public gateway MLTS 16 via the private network along with the emergency call. The encoding of DTMF tones on analog connections and facility IE APDUs is a proprietary extension associated with implementation procedures on private networks. The MLTS 10 or 16 can route emergency calls and ELIN / Callback numbers to the public network 14 via ISDN or analog CAMA (Centralized Automatic Message Ac...

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PUM

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Abstract

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 over a private network for far-end hop-off to the public network PSAP.

Description

[0001] This application is a divisional application of the following international invention patent application filed on February 20, 2002: International Application Number: PCT / US02 / 05025, National Application Number: 02807042.9, Invention Title: "Using the port equipment number via a dedicated network Method and apparatus for transmitting an accurate emergency location identification number (ELIN) from behind a multi-line telephone system (MLTS)" [0002] This application is related to the following co-pending applications: Ser. No. 09 / 816,843 entitled "Method and Apparatus for Transmitting an Accurate Emergency Location Identification Number (ELIN) from Behind a Multi-Line Telephone System (MLTS)"; Ser. No. 09 / 816,627 Entitled "Method and Apparatus for Transmitting an Accurate Emergency Location Identification Number (ELIN) from Behind a Multi-Line Telephone System (MLTS) Based on Priority"; Serial No. 09 / 816,823 entitled "Using the Method and Apparatus for Transmitting an Ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M3/42
CPCH04M2242/22H04M3/42042H04M3/42314H04M3/42H04M2242/04
Inventor P·M·斯图默
Owner SIEMENS INFORMATION & COMM NEWTWORKS INC