Device which reduces central office battery current during...

Differential input stage for electronic equipment,...

Differential output stage for electronic equipment providing...

Digital gyrator

Digital isolation apparatus and method

Distribution of current draw in a line powered DAA

Dual-slope current battery-feed circuit

Element management system for managing line-powered network...

Enabling Cisco legacy power to support IEEE 802.3 AF...

Enhanced high voltage interface for partitioned subscriber...

Enhanced services network interface device

External resistor and method to minimize power dissipation...

External resistor and method to minimize power dissipation...

Feed arrangement for a subscriber loop with multi-level...

Feeder circuit

Function for controlling line powered network element

Hybrid DC-feed controller for a subscriber line interface...

IP telephone with power source circuit

Least mean power consumption in telecommunications systems

Line powered modem