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Class Information
Number: 379/399.01
Name: Telephonic communications > Subscriber line or transmission line interface
Description: Subject matter including a link for connecting at least one telephone communications line to a central switching office or subscriber station.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7602699 |
Protection method and system for equipment in a network element |
Oct. 13, 2009 |
| 7586840 |
Method and apparatus for detecting and fixing faults in an inline-power capable ethernet system |
Sep. 8, 2009 |
| 7583797 |
Single ended analog front end |
Sep. 1, 2009 |
| 7573839 |
Line driver for an adaptive hybrid circuit |
Aug. 11, 2009 |
| 7574001 |
Internet protocol telephone system |
Aug. 11, 2009 |
| 7570748 |
Control and monitoring telecommunication system and method of setting a modulation method |
Aug. 4, 2009 |
| 7555055 |
Digital subscriber line communicating system |
Jun. 30, 2009 |
| 7548616 |
Termination device for a telephone line |
Jun. 16, 2009 |
| 7540765 |
Integrated DSLAM to POTS splitter connector |
Jun. 2, 2009 |
| 7539299 |
Office-line trunk circuit operating on ground-start and loop-start modes, method of controlling same, and control program for same |
May. 26, 2009 |
| 7536005 |
Ring detection and snoop circuit |
May. 19, 2009 |
| 7525398 |
Acoustically communicating data signals across an electrical isolation barrier |
Apr. 28, 2009 |
| 7526034 |
Method and apparatus for communicating between devices having no common electrical ground |
Apr. 28, 2009 |
| 7522722 |
System and method for interfacing plain old telephone system (POTS) devices with cellular devices in communication with a cellular network |
Apr. 21, 2009 |
| 7515672 |
Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with programmable current limiting |
Apr. 7, 2009 |
| 7515692 |
System and method for qualifying telephone lines for very-high-bit-rate digital subscriber line service |
Apr. 7, 2009 |
| 7489776 |
Facsimile apparatus |
Feb. 10, 2009 |
| 7486723 |
Asymmetrical digital subscriber line system with improved data rate |
Feb. 3, 2009 |
| 7486787 |
Subscriber line interface circuitry with common base audio isolation stage |
Feb. 3, 2009 |
| 7483529 |
Installation for distributing digital signals |
Jan. 27, 2009 |
| 7466819 |
System for powering a switch over data communication cabling infrastructure |
Dec. 16, 2008 |
| 7463722 |
Splitter system with test access |
Dec. 9, 2008 |
| 7457405 |
Enhanced low pass filter |
Nov. 25, 2008 |
| 7453943 |
Hybrid circuit for broadband modems |
Nov. 18, 2008 |
| 7450715 |
Transceiver for bidirectional frequency division multiplexed transmission |
Nov. 11, 2008 |
| 7450712 |
Low voltage sensing and control of battery referenced transistors in subscriber loop applications |
Nov. 11, 2008 |
| 7450649 |
Current mode digital data transmitter |
Nov. 11, 2008 |
| 7447306 |
Signaling device and system |
Nov. 4, 2008 |
| 7443977 |
Method and apparatus for a high efficiency line driver |
Oct. 28, 2008 |
| 7412052 |
System and method of delivering DSL services |
Aug. 12, 2008 |
| 7408993 |
Digital communication extender system and method |
Aug. 5, 2008 |
| 7400719 |
Subscriber line interface circuitry transceiver |
Jul. 15, 2008 |
| 7400720 |
System and method for optimizing digital subscriber line based services |
Jul. 15, 2008 |
| 7386037 |
Digital subscriber line communicating system |
Jun. 10, 2008 |
| 7382797 |
Mechanism to select the physical media type connector in network devices |
Jun. 3, 2008 |
| 7362856 |
Subscriber line interface circuitry transceiver |
Apr. 22, 2008 |
| 7362857 |
Subscriber line interface circuitry transceiver |
Apr. 22, 2008 |
| 7362855 |
Subscriber line interface circuitry transceiver |
Apr. 22, 2008 |
| 7362841 |
Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with switchable DC termination impedance |
Apr. 22, 2008 |
| 7352857 |
Method and apparatus for spectral containment over telephone service lines |
Apr. 1, 2008 |
| 7349536 |
Techniques for providing uninterrupted digital communications to customers coupled to local loop generation equipment |
Mar. 25, 2008 |
| 7346158 |
Method and system for wiring a digital subscriber line circuit |
Mar. 18, 2008 |
| 7342937 |
Spectrally flexible band plans with reduced filtering requirements |
Mar. 11, 2008 |
| 7339924 |
Method and apparatus for providing ringing timeout disconnect supervision in remote telephone extensions using voice over packet-data-network systems (VOPS) |
Mar. 4, 2008 |
| 7330544 |
Digital isolation barrier as interface bus for modems |
Feb. 12, 2008 |
| 7330703 |
Transceiver for bidirectional frequency division multiplexed transmission |
Feb. 12, 2008 |
| 7302055 |
Discharging envelope detector |
Nov. 27, 2007 |
| 7298837 |
Cross-over voltage lock for differential output drivers |
Nov. 20, 2007 |
| 7266195 |
Surge clamp protection circuit |
Sep. 4, 2007 |
| 7260212 |
Method and apparatus for subscriber line control circuit |
Aug. 21, 2007 |
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