Wireless emergency services protocols translator between ansi-41 and VoIP emergency services protocols
AssigneeTeleCommunication Systems, Inc.
InventorsTodd Poremba, Gordon J. Hines, Victor Burton
Life of this patent
Estimating the term…
Abstract
A protocol converter or translator between ANSI-41 ORREQs and VoIP V2 messaging. The protocol converter may alternatively (or also) provide conversion between GSM 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 VoIP Positioning Center (VPC). In this way existing GMLCs or MPCs may be used to service VoIP 9-1-1 calls. Moreover, operators of VoIP Positioning Centers (VPCs) who implement wireless offerings can re-use their existing VPCs to service wireless 9-1-1 calls.
Claims21
Apparatus to translate emergency services protocol call setup information from VoIP V2 to ANSI-41 ORREQ, comprising:
- a receiver to receive VoIP V2 signaling from a Voice Service Provider (VSP);
- a CBN inserter to insert a call back number (CBN) into both 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) and, if needed, to insert digits to determine a selective router and/or trunk, into up to 20 digits of a VoIP V2 message;
- whereby use of said digits received in said VoIP V2 message permit setup of an emergency services call over Session Initiation Protocol (SIP) using a wireless ESRK.
Apparatus to translate emergency services protocol call setup information from VoIP V2 to GSM MAP SLR, comprising:
- a receiver to receive VoIP V2 signaling from a Voice Service Provider (VSP);
- a CBN inserter to insert a call back number (CBN) into both an International Mobile Subscriber Identity (IMSI) field and an na-ESRD field of a GSM MAP SLR;
- and
- an ESRK inserter to insert an emergency service routing key (ESRK) and, if needed, digits to determine a selective router and/or trunk, into up to 20 digits of a VoIP V2 message;
- whereby use of said digits received in said VoIP V2 message permit setup of an emergency services call over Session Initiation Protocol (SIP) using a wireless ESRK.
Apparatus to translate emergency services protocol call setup information from ANSI-41 ORREQ to VoIP V2, comprising:
- a receiver to receive an ANSI-41 ORREQ containing a call back number (CBN) and emergency service routing digits (ESRD) from a mobile switching (MSC);
- a converter to convert said CBN and ESRD to a VoIP V2 request;
- a transmitter to send said VoIP V2 request to a VoIP positioning center (VPC);
- and
- a VoIP receiver to receive back said VoIP V2 request including an emergency service query key (ESQK) and an emergency service routing number (ESRN) returned by a VoIP positioning center (VPC), said VoIP V2 request having said ESQK and said ESRN inserted therein in a plurality of designated fields;
- whereby use of said ORREQ permits setup of an emergency services call over ISDN User Part (ISUP) or Multi-Frequency (MF) signaling.
Apparatus to translate emergency services protocol call setup information from GSM MAP SLR to VoIP V2, comprising:
- a receiver to receive a GSM MAP SLR containing a call back number (CBN) and emergency service routing digits (ESRD) from a mobile switching (MSC);
- a converter to convert said CBN and ESRD to a VoIP V2 request;
- a transmitter to send said VoIP V2 request to a VoIP positioning center (VPC);
- a VoIP receiver to receive back said VoIP V2 request including an emergency service query key (ESQK) and an emergency service routing number (ESRN) returned by a VoIP positioning center (VPC) inserted therein;
- and
- converting said received back VoIP V2 request to an SLR with an na-ESRK with said ESQK and a last 7-digits of said ESRN;
- whereby use of said SLR permits setup of an emergency services call over ISDN User Part (ISUP) or Multi-Frequency (MF) signaling.
A method to translate emergency services protocol call setup information from VoIP V2 to ANSI-41 ORREQ, comprising:
- receiving VoIP V2 signaling from a Voice Service Provider (VSP);
- inserting a call back number (CBN) into both a mobile directory number (MDN) field and an emergency service routing digits (ESRD) field of an ANSI-41 ORREQ;
- and
- inserting an emergency service routing key (ESRK) and, if needed, digits to determine a selective router and/or trunk, into up to 20 digits of a VoIP V2 message;
- whereby use of said digits received in said VoIP V2 message permit setup of an emergency services call over Session Initiation Protocol (SIP) using a wireless ESRK.
A method to translate emergency services protocol call setup information from VoIP V2 to GSM MAP SLR, comprising:
- receiving VoIP V2 signaling from a Voice Service Provider (VSP);
- inserting a call back number (CBN) into both an International Mobile Subscriber Identity (IMSI) field and an na-ESRD field of a GSM MAP SLR;
- and
- inserting an emergency service routing key (ESRK) and, if needed, digits to determine a selective router and/or trunk, into up to 20 digits of a VoIP V2 message;
- whereby use of said digits received in said VoIP V2 message permit setup of an emergency services call over Session Initiation Protocol (SIP) using a wireless ESRK.
A method to translate emergency services protocol call setup information from ANSI-41 ORREQ to VoIP V2, comprising:
- receiving an ANSI-41 ORREQ containing a call back number (CBN) and emergency service routing digits (ESRD) from a mobile switching center (MSC);
- converting said CBN and ESRD to a VoIP V2 request;
- sending said VoIP V2 request to a VoIP positioning center (VPC);
- and
- receiving back said VoIP V2 request including an emergency service query key (ESQK) and an emergency service routing number (ESRN) returned by a VoIP positioning center (VPC), said VoIP V2 request having said ESQK and said ESRN inserted therein in a plurality of designated fields;
- whereby use of said ORREQ permits setup of an emergency services call over ISDN User Part (ISUP) or Multi-Frequency (MF) signaling.
A method to translate emergency services protocol call setup information from GSM MAP SLR to VoIP V2, comprising:
- receiving a GSM MAP SLR containing a call back number (CBN) and emergency service routing digits (ESRD) from a mobile switching center (MSC);
- converting said CBN and ESRD to a VoIP V2 request;
- sending said VoIP V2 request to a VoIP positioning center (VPC);
- receiving back said VoIP V2 request including an emergency service query key (ESQK) and an emergency service routing number (ESRN) returned by a VoIP positioning center (VPC) inserted therein;
- and
- converting said received back VoIP V2 request to an SLR with an na-ESRK with said ESQK and a last 7-digits of said ESRN;
- whereby use of said SLR permits setup of an emergency services call over ISDN User Part (ISUP) or Multi-Frequency (MF) signaling.
Dependencies are inferred from the claim text.