E911 backup system for emergency 911 call answering systems

• US 6,327,342 B1
• Filed: 05/26/2000
• Issued: 12/04/2001
• Est. Priority Date: 05/28/1999
• Status: Expired due to Fees

• Current Assignee: Baker Integrated Technologies, LLC
• Original Assignee: Baker Integrated Technologies, LLC
• Inventors: Mobley, Matthew Stephen, Machell, Simon J. G.
• Primary Examiner(s): Woo, Stella
• Assistant Examiner(s): Ramakrishnaiah, Melur
• Application Number:
  US09/579,742
• Time in Patent Office: 557 Days
• Field of Search: 379/45, 379/46, 379/47, 379/48, 379/49, 379/37, 379/38, 379/39, 379/40, 379/41, 379/42, 379/43, 379/44, 379/265, 379/266
• US Class Current: 379/45
• CPC Class Codes: H04M 2242/04 for emergency applications
• CPC Class Codes: H04M 3/12 Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits ; Using redundant circuits; Response of a circuit, apparatus or system to an error
• CPC Class Codes: H04M 3/22 Arrangements for supervision, monitoring or testing
• CPC Class Codes: H04M 3/5116 for emergency applications

Claims