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Power Supply



No:7130414
Active mode line voltage regulator for ringing subscriber line interface circuit
No:5172407
Circuit for generating metering pulses intended for presentation to a telecommunication subscriber
No:7113591
Current sense circuit in a line powered network element
No:5175764
Enhanced high voltage line interface circuit
No:5323460
Enhanced subscriber line interface circuit
No:6922470
Hybrid dc-feed controller for a subscriber line interface circuit
No:6804351
Method and apparatus for detecting a compatible phantom powered device using common mode signaling
No:7203851
Method and apparatus for detecting and supplying power by a first network device to a second network device
No:6381477
Method and apparatus for protecting a circuit module in a communication device
No:6005933
Method for communication with no power feed and exchange for realizing the method
No:5815569
Method for controlling power losses associated with line interface circuits in telecommunications networks
No:RE40492
Power line telephony exchange
No:6668058
Power line telephony exchange
No:7095848
Power up reset circuit for line powered circuit
No:7209554
Ringing controller
No:5818125
Secondary source of energy system for powering communications hardware and services and associated method
No:6560244
Subscriber network terminal of an access line network and method for operating a network connecting unit
No:7239697
Supply power transition control
No:7058174
System and method for providing lifeline power service to digital subscriber line customers
No:7039062
System and method for pulsed cable telephony
No:7376229
System identification module for a communications system
No:5661796
Telephone set
No:6144737
Trunk interface circuit having function of battery feed to central office

# 23 




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