Alarm of a telecommunications terminal connected to a LAN

Analog subscriber circuit

Apparatus and method for real-time power distribution...

Apparatus and method for regulating an SLIC supply voltage

Apparatus for providing power to line drivers in a...

Automatic remote termination sensing and line powering scheme

Battery switching subscriber loop interface circuit

Biasing arrangement for optimizing DC feed characteristics...

Call related information reception using sigma/delta modulation

Communications system employing single-pair identity circuit...

Communications systems and methods using wireline adapters

Computer telephony power supply method and apparatus

Constant current line circuit with class features

Continuity of voice carried over DSL during power failure

Copper based interface system and regulated power source

Current amplifier, particularly for a telephone line

Current sense circuit in a line powered network element

Detection of low tip/ring currents in a line powered DAA

Device and method for detecting presence of service on...

Device for connecting a subscriber line to a high frequency...