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Public Safety Patents

Comtech TCS' growing patent portfolio allows meaningful partnerships with other industry-leading companies to be built through direct licensing, cross licensing and joint venture agreements. For more information on Comtech TCS’ intellectual property program and Public Safety Patents, contact Bob Held, senior director of intellectual asset management, at 410-280-1273.

Patent Number Title Issue Date
USP 6,064,722 Data Request Router for use with Emergency Public Safety Answering Point Systems 5/16/00
USP 6,529,722 System and Method for Enhanced 9-1-1 Address Development, Maintenance and Call Routing Using Road Access Zones  3/4/03 
USP 6,922,565 Public Safety Access Point (PSAP) Selection for E911 Wireless Callers in a GSM Type System 7/26/05
USP 6,940,950 Enhanced E911 Location Information Using Voice Over Internet Protocol (VoIP) 9/06/05
USP 7,260,186 Solutions for Voice Over Internet Protocol (VoIP) 911 Location Services 08/21/07
USP 7,340,241 Public Safety Access Point (PSAP) Selection For E911 Wireless Callers in a GSM Type System 03/04/08
USP 7,548,158 First Responder Wireless Emergency Alerting with Automatic Callback and Location Triggering 06/16/09
USP 7,852,834 Temporary ENUM Gateway 12/14/10
USP 7,907,551 Voice Over Internet Protocol (VoIP) Location Based 911 Conferencing 3/15/11
USP 7,903,587 Wireless Emergency Services Protocols Translator Between ANSI-41 and VoIP Emergency Services Protocols 3/08/11
USP 7,903,791 Enhanced E911 Location Information Using Voice Over Internet Protocol (VoIP) 3/08/11
USP 7,912,446 Solutions for Voice Over Internet Protocol (VoIP) 911 Location Services 3/22/11
USP 7,933,385  Emergency Alert for Voice Over Internet Protocol (VoIP)  4/26/2011 
USP 7,945,026 Voice Over Internet Protocol (VoIP) E911 Metro Street Address Guide (MSAG) Validation 5/17/11
USP 8,027,697 Public Safety Access Point (PSAP) Selection For E911 Wireless Callers in a GSM Type System 9/27/11
USP 8,050,386 Mobile Automatic Location Identification (ALI) For First Responders 11/01/11
USP 8,059,789 Automatic Location Identification (ALI) Emergency Services Pseudo Key (ESPK) 11/15/11
USP 8,068,587  Nationwide Table Routing of Voice Over Internet Protocol (VoIP) Emergency Calls  11/29/11 
USP 8,090,341 Integrated Services User Port (ISUP)/Session Initiation Protocol (SIP) Gateway for Unlicensed Mobile Access (UMA) Emergency Services Call Flow 01/03/2012
USP 8,102,972 Emergency Services Selective Router Interface Translator
01/24/2012
USP 8,102,252 First Responder Wireless Emergency Alerting With Automatic Callback and Location Triggering 01/24/2012
USP 8,103,242 E911 Call Blocking for Non-Initialized Wireless Telephone
01/24/2012
USP 8,116,722 E911 Call Blocking For Non-Initialized Wireless Telephones  02/14/2012
USP 8,150,364 Enhanced E911 Network Access For a Call Center Using Session Initiation Protocol (SIP) Messaging
04/03/2012
USP 8,150,363 Enhanced E911 Network Access For Call Centers 04/03/2012
USP 8,149,997 Protocol Converting 9-1-1 Emergency Messaging Center
04/03/2012
USP 8,155,109 SS7 ISUP To SIP Based Call Signaling Conversion Gateway For Wireless VoIP E911 04/10/2012
USP 8,175,570 E911 Call Blocking For Non-Initiated Wireless Telephones
05/08/2012
USP 8,185,087  Emergency 911 Data Messaging 05/22/2012 
USP 8,208,461 SS7 MAP/Lg+ To SIP Based Call Signaling Conversion Gateway For Wireless VoIP E911
06/26/2012
USP 8,208,605 Extended Efficient Usage of Emergency Services Keys 06/26/2012 
USP 8,228,897 SS7 ANSI-41 To SIP Based Call Signaling Conversion Gateway For Wireless VoIP E911 07/24/2012 
USP 8,295,445 Automatic Emergency Call Notification to Pre-Designated Personal Emergency Contacts 10/23/2012 
USP 8,369,825 Enhanced E911 Network Access For a Call Center Using Session Initiation Protocol (SIP) Messaging 02/05/2013 
USP 8,369,316 Wireless Emergency Services Protocols Translator Between ANSI-41 and VoIP Emergency Services Protocols 02/05/2013 
USP 8,385,881 Solutions for Voice Over Internet Protocol (VoIP) 911 Location Services 02/26/2013 
USP 8,390,480 Method and System for Sharing and Retrieving Spatial Related Information 03/05/2013 
USP 8,406,728  Enhanced E911 Network Access for Call Centers  03/26/2013 
USP 8,428,619  Personal Location Code   04/23/2013 
USP 8,436,728  First Responder Wireless Emergency Alerting with Automatic Callback and Location Triggering  05/07/2013 
USP 8,453,240 System for Efficiently Handling Cryptographic Messages Containing Nonce Values in a Wireless Connectionless Environment Without Comprising Security  05/28/2013 
USP 8,489,064  Integrated Services User Part (ISUP)/Session Initiation Protocol (SIP) Gateway for Unlicensed Mobile Access (UMA) Emergency Services Call Flow  07/16/2013 
USP 8,520,805 Video E911 08/27/2013 
USP 8,532,266 Efficient Usage of Emergency Services Keys 09/10/2013 
USP 8,577,328 Associating Metro Street Address Guide (MSAG) Validated Addresses With Geographic Map Data  11/05/2013 
USP 8,644,302 Temporary Enum Gateway  02/04/2014 
USP 8,649,806 Aggregate Location Dynometer (ALD)  02/11/2014 
USP 8,681,946 Mobile Automatic Location Identification (ALI) For First Responders  03/25/2014 
USP 8,682,286 Enhanced E911 Network Access For a Call Center Using Session Initiation Protocol (SIP) Messaging  03/25/2014 
USP 8,774,171 SS7 ANSI-41 to SIP Based Call Signaling Conversion Gateway for Wireless VoIP E911  07/08/2014 
USP 8,787,872 Ingress/Egress Call Module  07/22/2014 
USP 8,798,572 Solutions for voice over internet protocol (VoIP) 911 location services  08/05/2014 
USP 8,831,556 Unique Global Identifier Header For Minimizing Prank Emergency 911 Calls  09/09/2014 
USP 8,867,485 Multiple Location Retrieval Function (LRF) network Having Location Continuity  10/21/2014 
USP 8,873,718 Enhanced E911 Location Information Using Voice Over Internet Protocol (VoIP)  10/28/2014 
USP 8,874,068  Emergency 911 Data Messaging  10/28/2014 
USP 8,885,796 Extended Efficient Usage of Emergency Services Keys  11/11/2014 

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