1
Jon Croy, John Gordon Hines: Voice Over Internet Protocol (VoIP) location based conferencing. TeleCommunication Systems, William H Bollman, December 1, 2009: US07626951 (94 worldwide citation)

A Voice Over Internet Protocol (VoIP) device uses its location to narrow down known and unknown potential VoIP third parties meeting the user's criteria, based on their physical proximity to the initial caller and other pre-determined characteristics, to join in a phone conference. A VoIP soft switc ...


2
Yinjun Zhu, John Gordon Hines: Mobile based area event handling when currently visited network does not cover area. TeleCommunication Systems, William H Bollman, July 27, 2010: US07764961 (62 worldwide citation)

An area event handler informs when a target mobile enters or leaves a network covering a pre-defined target area, and re-aims an original area event request. When the event occurs, the mobile sends a location report to an initiator of the request. A PLMN list with estimated geographic coverage areas ...


3
Jon Croy, John Gordon Hines, Darrin Johnson: Voice over internet protocol (VoIP) location based 911 conferencing. TeleCommunication Systems, William H Bollman, March 15, 2011: US07907551 (22 worldwide citation)

Voice Over Internet Protocol (VoIP) emergency calls to an Emergency Response Center (ERC) are handled through a VoIP conference bridge on a VoIP service provider's soft switch. The soft switch works with a VoIP positioning center (VPC) to obtain location information, which is compared against a PSAP ...


4
Richard Dickinson, John Gordon Hines, Jonathan Croy: Enhanced E911 network access for call centers. TeleCommunication Systems, William H Bollman, April 3, 2012: US08150363 (10 worldwide citation)

An emergency call (e.g., a 911 call, an alarm company call) forwarded by a telematics call center is routed over the switched PSTN to a Voice Over Internet Protocol (VoIP) call server, where the switched call is converted to a session initiating protocol (SIP) packetized IP call for presentation to ...


5
Richard Dickinson, John Gordon Hines, Jonathan Croy: Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging. Telecommunication Systems, William H Bollman, March 25, 2014: US08682286 (10 worldwide citation)

A switched emergency call (e.g., a 911 call, an alarm company call) forwarded by a telematics call center is converted into a session initiation protocol (SIP) packetized phone call at the call center, and routed over an IP network, for presentation to an emergency services gateway, which connects t ...


6
Richard Dickinson, John Gordon Hines, Jonathan Croy: Enhanced E911 network access for a call center using session initiation protocol (SIP) messaging. TeleCommunication Systems, William H Bollman, February 5, 2013: US08369825 (3 worldwide citation)

A switched emergency call (e.g., a 911 call, an alarm company call) forwarded by a telematics call center is converted into a session initiation protocol (SIP) packetized phone call at the call center, and routed over an IP network, for presentation to an emergency services gateway, which connects t ...


7
Richard Dickinson, John Gordon Hines, Jonathan Croy: Enhanced E911 network access for call centers. TeleCommunication Systems, William H Bollman, March 26, 2013: US08406728 (3 worldwide citation)

An emergency call (e.g., a 911 call, an alarm company call) forwarded by a telematics call center is routed over the switched PSTN to a Voice Over Internet Protocol (VoIP) call server, where the switched call is converted to a session initiating protocol (SIP) packetized IP call for presentation to ...


8
Gerhard Geldenbott, Yinjun Zhu, John Gordon Hines, Victor Burton: Extended efficient usage of emergency services keys. TeleCommunication Systems, William H Bollman, June 26, 2012: US08208605 (3 worldwide citation)

An emergency services key (e.g., ESQK or ESRK) is guaranteed to be available from a limited size ESQK pool. A plurality of ESQKs are grouped into a pool of emergency service keys “ESQK Pool ID”, each including anywhere from 1 to N number of ESQKs. Each ESQK preferably has a “Timestamp”, information ...


9
John Gordon Hines, Jonathan Croy, Roger Stuart Marshall: Automatic location identification (ALI) emergency services pseudo key (ESPK). TeleCommunication Systems, William H Bollman, November 15, 2011: US08059789 (3 worldwide citation)

ESQK and/or ESRK (ESxK) number pool exhaustion and reuse errors are eliminated by replacing the ESxK identifier with an emergency services pseudo key (ESPK) identifier. A positioning center (MPC/VPC) replaces an ESxK received with a query with a ESPK in a return message. The ESPK is either a unique ...


10
Jon Croy, John Gordon Hines, Darrin Johnson, Kathleen Lendvay: Voice over internet protocol (VoIP) multi-user conferencing. TeleCommunication Systems, William H Bollman, June 18, 2013: US08467320 (2 worldwide citation)

Voice Over Internet Protocol (VoIP) devices are invited to a conference bridge based on a pre-defined criteria for the conference bridge (e.g., passengers on a plane. The conference invite messages are transmitted using Internet Protocol, which they may or may not accept. The invited VoIP users may ...