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Class Information
Number: 379/32.04
Name: Telephonic communications > Diagnostic testing, malfunction indication, or electrical condition measurement > Monitoring > Subscriber line
Description: Subject matter includes monitoring of a telephone line connecting the local telephone central office to the subscribers telephone instrument or system.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7620162 |
Methods, systems and computer program products for monitoring service usage |
Nov. 17, 2009 |
| 7593511 |
Method for training line drivers in a communication system |
Sep. 22, 2009 |
| 7502447 |
Call failure recording |
Mar. 10, 2009 |
| 7440558 |
Telephony security system |
Oct. 21, 2008 |
| 7440562 |
Phone line supervisory controls |
Oct. 21, 2008 |
| 7437454 |
Low-impact method and apparatus for maintaining network access servers |
Oct. 14, 2008 |
| 7388947 |
Controllable telecommunications switch reporting compatible with voice grade lines |
Jun. 17, 2008 |
| 7289617 |
Phone line supervisory controls |
Oct. 30, 2007 |
| 7277528 |
Call-content determinative selection of interception access points in a soft switch controlled network |
Oct. 2, 2007 |
| 7257199 |
Telephony based remote location monitoring |
Aug. 14, 2007 |
| 7245702 |
Method and apparatus for determining and reporting the operational status of an integrated services hub |
Jul. 17, 2007 |
| 7224672 |
XDSL modem |
May. 29, 2007 |
| 7212496 |
Remote test unit |
May. 1, 2007 |
| RE39432 |
Impedance blocking filter circuit |
Dec. 19, 2006 |
| 7130609 |
Wireless backup telephone device and associated support system |
Oct. 31, 2006 |
| 7092493 |
Methods and systems for providing lawful intercept of a media stream in a media gateway |
Aug. 15, 2006 |
| 6980821 |
Call center access in a push to talk based call system |
Dec. 27, 2005 |
| 6970554 |
System and method for observing calls to a call center |
Nov. 29, 2005 |
| 6931103 |
Failover mechanisms for remote networked phones |
Aug. 16, 2005 |
| 6868445 |
Low-impact method and apparatus for maintaining network access servers |
Mar. 15, 2005 |
| 6807253 |
Switching apparatus having function for processing malicious call and operating method of the same |
Oct. 19, 2004 |
| 6801618 |
System and method for implementing recording plans using a session manager |
Oct. 5, 2004 |
| 6754311 |
Enhanced subscriber line call monitoring |
Jun. 22, 2004 |
| 6754312 |
Method for monitoring a subscriber of an intelligent network |
Jun. 22, 2004 |
| 6744855 |
Service control platform |
Jun. 1, 2004 |
| 6741676 |
Determining the physical structure of subscriber lines |
May. 25, 2004 |
| 6735457 |
Automatic number capture |
May. 11, 2004 |
| 6728338 |
Utilization of communication channels between a central office switch and a law enforcement agency |
Apr. 27, 2004 |
| 6628754 |
Method for rapid noise reduction from an asymmetric digital subscriber line modem |
Sep. 30, 2003 |
| 6625256 |
Failover mechanisms for remote networked phones |
Sep. 23, 2003 |
| 6584148 |
System and method for testing digital subscriber lines |
Jun. 24, 2003 |
| 6574280 |
Method and apparatus for detecting and determining characteristics of a digital channel in a data communication system |
Jun. 3, 2003 |
| 6542581 |
Method for controlling the transmission power in a digital subscriber line |
Apr. 1, 2003 |
| 6498843 |
Method and system for intercepting and monitoring signals in a network |
Dec. 24, 2002 |
| 6470074 |
System and method for providing data and voice services on a shared line |
Oct. 22, 2002 |
| 6424700 |
Network based distributed PBX with connection loss survival features |
Jul. 23, 2002 |
| 6418196 |
Method and system in telecommunications system |
Jul. 9, 2002 |
| 6411802 |
Wireless backup telephone device |
Jun. 25, 2002 |
| 6400802 |
Method and apparatus for performing transmission line testing |
Jun. 4, 2002 |
| 6377671 |
Digital key telephone system and extension terminal device thereof |
Apr. 23, 2002 |
| 6356622 |
System and apparatus for enhancing a network link |
Mar. 12, 2002 |
| 6320940 |
Network termination device with automatic detection and correction of circuit polarity |
Nov. 20, 2001 |
| 6307925 |
Use of wizards/experts in a PBX environment |
Oct. 23, 2001 |
| 6266395 |
Single-ended subscriber loop qualification for xDSL service |
Jul. 24, 2001 |
| 6240177 |
Communication device comprising an off-hook detection circuit |
May. 29, 2001 |
| 6222922 |
Loop current monitor circuitry and method for a communication system |
Apr. 24, 2001 |
| 6181777 |
Impedance blocking filter circuit |
Jan. 30, 2001 |
| 6061429 |
Test telephone |
May. 9, 2000 |
| 6026146 |
Automated voice terminal protocol identification system |
Feb. 15, 2000 |
| 6014426 |
Telephone line integrity monitoring system |
Jan. 11, 2000 |
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