228044 ⎘
Current supply arrangements for telephone systems Current supply source at the exchanger providing current to substations
Sub-classes:SYSTEM AND METHOD FOR CHARGING ELECTRONIC DEVICES IN A CONTROLLED ENVIRONMENT
#2Test of a Communication Interface Connected to an Analog Telephone Line
#3FAST CHARGING DEVICE WITH MULTIPLE INTELLIGENT TERMINALS AND CHARGING METHOD THEREOF
#4System and method for charging electronic devices in a controlled environment
#5Cable Pair Stabilizer Unit and Method and System for Generating Sealing Current
#6System and method for charging electronic devices in a controlled environment
#7System and method for charging electronic devices in a controlled environment
#8Cable pair stabilizer unit and method and system for generating sealing current
#9Network-enabled door station extender
#10Method and apparatus for providing electrical power to a broadband digital subscriber line access
#11Low power modem and controller
#12Access node and method
#13Access node and method
#14Access node and method
#15Access node and method
#16Access node and method
#17System and method for charging electronic devices in a controlled environment
#18Apparatus for reverse power feeding in accordance with communication line environments and a method thereof
#19Method and apparatus for providing electrical power to a broadband digital subscriber line access
#20Access node and method
#21Method and apparatus for allocating power levels to a transmission in a digital subscriber line network
#22Message sending device and method thereof
#23Direct-current to alternating-current power conversion
#24Method and apparatus for providing electrical power to a broadband digital subscriber line access
#25Method, device and system for isolating services, DPU and network adapter
#26Adaptive inductive power supply with communication
#27Cable pair stabilizer unit and method and system for generating sealing current
#28Method for dealing with anomalous conditions in a reverse power network, and power injector for use in such a method
#29Systems and methods for providing back power to a service unit
#30PORTABLE WIRELESS COMMUNICATIONS SYSTEMS
#31Voltage regulator with charge pump for generating second voltage source
#32Power distribution for telecommunications system
#33Delivery of electrical power
#34Adaptive inductive power supply with communication
#35Method and apparatus for providing electrical power to a broadband digital subscriber line access
#36System and method for providing and locating public or private mobile device charging stations
#37Apparatus for holding portable electronic device
#38Telephone switchboard and electronic device for providing power to load having different resistance values at different operation modes
#39Systems and methods for powering network access devices from customer premises equipment
#40Adaptive inductive power supply with communication
#41Adaptive inductive power supply with communication
#42Adaptive inductive power supply with communication
#43Adaptive inductive power supply with communication
#44Adaptive inductive power supply with communication
#45Adaptive inductive power supply with communication
#46Continuous power transfer scheme for two-wire serial link
#47Adaptive inductive power supply with communication
#48Adaptive inductive power supply with communication
#49Adaptive inductive power supply with communication
#50Power saving technique for telephony access networks
#51Signal-powered integrated circuit with ESD protection
#52Method and apparatus for providing electrical power to a broadband digital subscriber line access
#53Method and Apparatus for Supplying DC Feed to a Subscriber Line
#54Method and Apparatus for Supplying DC Feed to a Subscriber Line
#55Adaptive inductive power supply with communication
#56Function for controlling line powered network element
#57Power supply with digital control loop
#58System and method for inductive power supply control using remote device power requirements
#59Protection Circuit and Method
#60Encoding status signals in DC voltage levels
#61System for line powering in communications
#62Output stacking architecture for an amplifier
#63Methods and apparatus for performing subscriber line interface functions
#64Method and devices for providing wetting current
#65Internet telephony call box device implemented with a single SLIC module
#66Autonomous metallic supervision with sealing current
#67Sealing current terminator for inhibiting oxidation and methods therefor
#68Method for configuring power loops between a central office and a service access interface
#69Single-transformer digital isolation barrier
#70Continuous power transfer scheme for two-wire serial link
#71Switched mode current feed methods for telephony subscriber loops
#72Direct digital access arrangement circuitry and method for connecting to phone lines
#73Subscriber loop interface circuitry with tracking battery supply
#74Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with programmable current limiting
#75Telephone terminal equipment interface circuit
#76Signal amplitude and clock signal frequency selection
#77Power supply signal from system side circuit to line side circuit in telecommunication device
#78Ground-fault protection for direct current circuits
#79Automated determination of power transmission resistance