|
CA1200036A
(en)
*
|
1978-03-13 |
1986-01-28 |
Guido Panizzon |
Partyline subscriber interface circuit
|
|
US4232199A
(en)
*
|
1978-10-18 |
1980-11-04 |
Summa Four, Inc. |
Special services add-on for dial pulse activated telephone switching office
|
|
US4445211A
(en)
*
|
1981-10-29 |
1984-04-24 |
Gte Automatic Electric Labs Inc. |
Arrangement for multiple custom calling
|
|
US4445212A
(en)
*
|
1981-10-29 |
1984-04-24 |
Gte Automatic Electric Labs Inc. |
Arrangement for multiple custom calling
|
|
US4446554A
(en)
*
|
1981-10-29 |
1984-05-01 |
Gte Automatic Electric Labs Inc. |
Arrangement for multiple custom calling
|
|
US4446553A
(en)
*
|
1981-10-29 |
1984-05-01 |
Gte Automatic Electric Labs Inc. |
Arrangement for multiple custom calling
|
|
US4633042A
(en)
*
|
1984-07-26 |
1986-12-30 |
Electrotel, Inc. |
Electronic micro-controller conversion module for step by step switching apparatus
|
|
US5752191A
(en)
|
1984-09-14 |
1998-05-12 |
Accessline Technologies, Inc. |
Telephone control system which connects a caller with a subscriber AT A telephone address
|
|
US6545589B1
(en)
|
1984-09-14 |
2003-04-08 |
Aspect Communications Corporation |
Method and apparatus for managing telecommunications
|
|
US5375161A
(en)
*
|
1984-09-14 |
1994-12-20 |
Accessline Technologies, Inc. |
Telephone control system with branch routing
|
|
US6201950B1
(en)
|
1984-09-14 |
2001-03-13 |
Aspect Telecommunications Corporation |
Computer-controlled paging and telephone communication system and method
|
|
US5588037A
(en)
*
|
1984-09-14 |
1996-12-24 |
Accessline Technologies, Inc. |
Remote access telephone control system
|
|
US4706280A
(en)
*
|
1985-10-31 |
1987-11-10 |
Electrotel, Inc. |
Electronic step-by-step telephone switching system
|
|
US4791663A
(en)
*
|
1986-02-12 |
1988-12-13 |
Telident, Inc. |
Telephone status recognition and bypass system
|
|
GB2211359B
(en)
*
|
1987-10-20 |
1991-05-01 |
Plessey Co Plc |
Apparatus by which auxiliary slide-in units are connected to slide-in units
|
|
US5263084A
(en)
*
|
1991-07-22 |
1993-11-16 |
Northern Telecom Limited |
Spontaneous caller identification with call-waiting
|
|
US5353339A
(en)
*
|
1992-05-20 |
1994-10-04 |
At&T Bell Laboratories |
Simplified uniform network provisioning and restoration
|
|
US5479493A
(en)
*
|
1992-05-21 |
1995-12-26 |
At&T Corp. |
Calling line identification adjunct for use with a communication system
|
|
US5319702A
(en)
*
|
1992-07-29 |
1994-06-07 |
Tele-Matic Corporation |
Method and apparatus for detecting and responding to hook flash events occurring on a remote telephone
|
|
US6026156A
(en)
*
|
1994-03-18 |
2000-02-15 |
Aspect Telecommunications Corporation |
Enhanced call waiting
|
|
SV1994000033A
(es)
*
|
1994-04-21 |
1995-10-30 |
Blen Georgina Borbon |
Publitel internacional.
|
|
US5619561A
(en)
*
|
1995-06-22 |
1997-04-08 |
Reese; Morris |
Call-waiting and caller identification with three-way conversations arrangements
|
|
US6411682B1
(en)
|
1995-09-21 |
2002-06-25 |
Aspect Telecommunications Corporation |
Computer controlled paging and telephone communication system and method
|
|
US5796811A
(en)
*
|
1995-11-15 |
1998-08-18 |
Gateway Technologies, Inc. |
Three way call detection
|
|
US5805685A
(en)
*
|
1995-11-15 |
1998-09-08 |
Gateway Technologies, Inc. |
Three way call detection by counting signal characteristics
|
|
US6157640A
(en)
*
|
1996-06-25 |
2000-12-05 |
Ericsson Inc |
Providing feature logic control in parallel with voice over a single subscriber access
|
|
US6587867B1
(en)
|
1997-05-22 |
2003-07-01 |
Mci Communications Corporation |
Internet-based subscriber profile management of a communications system
|
|
US6418209B1
(en)
|
1997-08-21 |
2002-07-09 |
Uniden Corporation |
Telecommunications device equipped with in-call incoming call notification function and method for detecting in-call incoming signal notification
|
|
US6389117B1
(en)
|
1997-09-08 |
2002-05-14 |
Mci Worldcom, Inc. |
Single telephone number access to multiple communications services
|
|
US6330079B1
(en)
|
1997-09-08 |
2001-12-11 |
Mci Communications Corporation |
Integrated voicemail and faxmail platform for a communications system
|
|
US6018575A
(en)
*
|
1997-09-08 |
2000-01-25 |
Mci Worldcom |
Direct distance dialing (DDD) access to a communications services platform
|
|
US6931116B1
(en)
*
|
1997-09-08 |
2005-08-16 |
Mci Communications Corporation |
Multiple routing options in a telecommunications service platform
|
|
US7088801B1
(en)
|
1997-09-08 |
2006-08-08 |
Mci, Inc. |
Single telephone number access to multiple communications services
|
|
US6650632B1
(en)
|
1998-06-30 |
2003-11-18 |
Cisco Technology, Inc. |
Feature transparency in a telecommunications network
|
|
GB2369745B
(en)
*
|
2000-11-30 |
2004-03-17 |
Mitel Corp |
Loop voltage detection circuit
|
|
US7899167B1
(en)
|
2003-08-15 |
2011-03-01 |
Securus Technologies, Inc. |
Centralized call processing
|
|
US8000269B1
(en)
|
2001-07-13 |
2011-08-16 |
Securus Technologies, Inc. |
Call processing with voice over internet protocol transmission
|
|
US7505406B1
(en)
|
2001-07-13 |
2009-03-17 |
Evercom Systems, Inc. |
Public telephone control with voice over internet protocol transmission
|
|
US9020114B2
(en)
|
2002-04-29 |
2015-04-28 |
Securus Technologies, Inc. |
Systems and methods for detecting a call anomaly using biometric identification
|
|
US9026468B2
(en)
|
2002-04-29 |
2015-05-05 |
Securus Technologies, Inc. |
System and method for proactively establishing a third-party payment account for services rendered to a resident of a controlled-environment facility
|
|
US7860222B1
(en)
|
2003-11-24 |
2010-12-28 |
Securus Technologies, Inc. |
Systems and methods for acquiring, accessing, and analyzing investigative information
|
|
US7916845B2
(en)
|
2006-04-13 |
2011-03-29 |
Securus Technologies, Inc. |
Unauthorized call activity detection and prevention systems and methods for a Voice over Internet Protocol environment
|
|
US7529357B1
(en)
|
2003-08-15 |
2009-05-05 |
Evercom Systems, Inc. |
Inmate management and call processing systems and methods
|
|
US8208410B1
(en)
|
2005-02-28 |
2012-06-26 |
Radvision Ltd. |
Systems and methods for implementing call waiting in multimedia devices
|
|
US10796392B1
(en)
|
2007-05-22 |
2020-10-06 |
Securus Technologies, Llc |
Systems and methods for facilitating booking, bonding and release
|
