×

Methods and apparatus for transmitting accurate emergency location identification numbers (ELINs) after an emergency caller disconnects

  • US 7,103,153 B2
  • Filed: 03/23/2001
  • Issued: 09/05/2006
  • Est. Priority Date: 03/23/2001
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for transmitting an emergency location identification number (ELIN) and/or callback number for an analog or digital telephonic device from which an emergency call was made, from customer premises equipment (CPE) to a public safety answering point (PSAP) after an emergency call goes on-hook, said method comprising the steps of:

  • a) upon initiation of an emergency call, storing ELIN and/or callback number in a buffer at the CPE;

    b) upon detecting an on-book event at the telephonic device from which the emergency call was made, autonomously transmitting the ELIN and/or callback number from the buffer to the PSAP prior to disconnecting the call at the PBX/MLTS.

View all claims
  • 7 Assignments
Timeline View
Assignment View
    ×
    ×