Wireless Emergency Services Protocols Translator Between ANSI-41 and VoIP Emergency Services Protocols

Abstract

A protocol converter or translator between ANSI-41 ORREQs and VoIP V2 messaging. The protocol converter may alternatively (or also) provide conversion between GMS MAP and VoIP V2 messaging. Interaction of VSPs with a Mobile Positioning Center (MPC) or a Gateway Mobile Location Center (GMLC) is permitted, as is interaction of wireless carriers with a Voice Positioning Center (VPC). In this way existing GMLCs or MPCs may be used to service VoIP 9-1-1 calls. Moreover, operators of Voice Positioning Centers (VPCs) who implement wireless offerings can re-use their existing VPCs to service wireless 9-1-1 calls.

1 - 21 . (canceled) 
     
     
         22 . Apparatus to translate emergency services protocol call setup information from VoIP to ANSI-41 ORREQ, comprising:
 a receiver to receive, from a Voice Service Provider (VSP), VoIP signaling;   a CBN inserter to insert a call back number (CBN) into at least one of a mobile directory number (MDN) field and an emergency service routing digits (ESRD) field of an ANSI-41 ORREQ; and   an ESRK inserter to insert an emergency service routing key (ESRK) into a VoIP message;   whereby said VoIP message permits, using said ESRK, setup of an emergency services call with Session Initiation Protocol (SIP).   
     
     
         23 . The apparatus to translate emergency services protocol call setup information from VoIP to ANSI-41 ORREQ according to  claim 22 , wherein:
 said call back number (CBN) is treated as emergency services routing digits (ESRD), permitting said ESRD to determine an ESRK based on a provisioned address of an initiating mobile device.   
     
     
         24 . The apparatus to translate emergency services protocol call setup information from VoIP to ANSI-41 ORREQ according to  claim 22 , wherein:
 said call back number (CBN) is treated as emergency services routing digits (ESRD), and permits said ESRD to determine digits to select a proper selective router based on said provisioned address of said initiating mobile device.   
     
     
         25 . The apparatus to translate emergency services protocol call setup information from VoIP to ANSI-41 ORREQ according to  claim 22 , wherein:
 said call back number (CBN) is treated as emergency services routing digits (ESRD), and permits said ESRD to determine digits to select a proper trunk group based on said provisioned address of said initiating mobile device.   
     
     
         26 . A method to translate emergency services protocol call setup information from VoIP to ANSI-41 ORREQ, comprising:
 receiving, from a Voice Service Provider (VSP), VoIP signaling;   inserting a call back number (CBN) into a mobile directory number (MDN) field of an ANSI-41 ORREQ; and   inserting an emergency service routing key (ESRK) into a VoIP message;   whereby said VoIP message permits, using said ESRK, setup of an emergency services call over Session Initiation Protocol (SIP).   
     
     
         27 . The method to translate emergency services protocol call setup information from VoIP to ANSI-41 ORREQ according to  claim 26 , further comprising:
 determining an ESRK from said MDN based on a provisioned address of an initiating mobile device.   
     
     
         28 . The method to translate emergency services protocol call setup information from VoIP to ANSI-41 ORREQ according to  claim 26 , further comprising:
 determining digits, from said MDN, to select a proper selective router based on said provisioned address of said initiating mobile device.   
     
     
         29 . The method to translate emergency services protocol call setup information from VoIP to ANSI-41 ORREQ according to  claim 26 , further comprising:
 determining digits, from said MDN, to select a proper trunk group based on said provisioned address of said initiating mobile device.   
     
     
         30 . A method to translate emergency services protocol call setup information from VoIP to ANSI-41 ORREQ, comprising:
 receiving, from a Voice Service Provider (VSP), VoIP signaling;   inserting a call back number (CBN) into an emergency service routing digits (ESRD) field of an ANSI-41 ORREQ; and   inserting an emergency service routing key (ESRK) into a VoIP message;   whereby said VoIP message permits, using said ESRK, setup of an emergency services call over Session Initiation Protocol (SIP).   
     
     
         31 . The method to translate emergency services protocol call setup information from VoIP to ANSI-41 ORREQ according to  claim 30 , further comprising:
 determining an ESRK from said ESRD based on a provisioned address of an initiating mobile device.   
     
     
         32 . The method to translate emergency services protocol call setup information from VoIP to ANSI-41 ORREQ according to  claim 30 , further comprising:
 determining digits, from said ESRD, to select a proper selective router based on said provisioned address of said initiating mobile device.   
     
     
         33 . The method to translate emergency services protocol call setup information from VoIP to ANSI-41 ORREQ according to  claim 30 , further comprising:
 determining digits, from said ESRD, to select a proper trunk group based on said provisioned address of said initiating mobile device.