| Patents for H04M 19 - Current supply arrangements for telephone systems (7,475) |
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| 12/19/2001 | CN1076551C A home and small business phone system for operation on a single internal twisted pair line |
| 12/18/2001 | US6332075 Use of distinctive ringing in a wireless communication system to inform a called party of an increased billing rate |
| 12/13/2001 | WO2001050727A3 Digital subscriber loop repeaters and associated methods |
| 12/13/2001 | WO2001041457A3 Method and apparatus for providing context-based call transfer operation |
| 12/13/2001 | US20010051536 Communication device to inform a user of a call differently according to the caller |
| 12/13/2001 | US20010050986 Wire bound telecommunications device and a power supply circuit |
| 12/12/2001 | EP1162854A1 Controlling the routing and/or ringing behaviour of a telephone system in accordance with the geographical position of a portable phone |
| 12/12/2001 | EP1162853A1 Portable phone that changes behaviour according to its geographical position |
| 12/12/2001 | EP1162818A1 Current adapter device for modem |
| 12/12/2001 | CN1326303A Portable communication terminal device with music mixing |
| 12/11/2001 | US6330330 External resistor and method to minimize power dissipation in DC holding circuitry for a communication system |
| 12/11/2001 | US6330328 Modular digital telephone system and method including an universal telephony shelf |
| 12/06/2001 | US20010047717 Portable communication terminal apparatus with music composition capability |
| 12/05/2001 | EP1161076A1 Portable radiotelephone with improved ringing |
| 12/05/2001 | EP1161075A2 Portable communication terminal apparatus with music composition capability |
| 12/05/2001 | EP1161074A1 Method for securing a telephone connection |
| 12/05/2001 | EP1161073A1 Circuit arrangement for a broad band transformer |
| 12/05/2001 | EP0659325B1 Cordless telephone system with different ringing patterns |
| 12/05/2001 | CN1325223A Method of generating ringing sound using tune rhyme and communication terminal equipment |
| 12/05/2001 | CN1075912C Power control apparatus suitable for use in radio communication device |
| 11/29/2001 | US20010045862 Current control circuit |
| 11/29/2001 | US20010045155 Method of compressing a midi file |
| 11/28/2001 | EP1157528A1 Caller id preview for mobile telephones |
| 11/28/2001 | CN1324200A Portable wireless telephone having improved ringing device |
| 11/28/2001 | CN1324199A Telephone and contact mode mobile terminal operation |
| 11/27/2001 | US6324412 Telephone and module having a pin for providing temperature information and generating a silent alarm |
| 11/27/2001 | US6324384 Call processing method, subscriber unit, and access control apparatus operated in wireless local loop system |
| 11/27/2001 | US6323796 Digital isolation system with ADC offset calibration |
| 11/27/2001 | US6323758 Vibration generating unit |
| 11/27/2001 | US6322400 Battery termination panel |
| 11/27/2001 | CA2211771C Electronic backplane device for a fiber distribution shelf in an optical fiber administration system |
| 11/22/2001 | US20010044328 Mobile terminal operating in telephonic and tactile modes |
| 11/22/2001 | US20010043672 Long-distance transmission system and device |
| 11/22/2001 | DE10023474A1 Indicating call reaching communications terminal involves terminal outputting identification characters as acoustic tone in response to received identification signal |
| 11/21/2001 | EP0813787B1 A telephone set having calling party dependent ringing |
| 11/20/2001 | US6320945 Line-powered pay telephone |
| 11/20/2001 | US6320879 Communication system and method for interleaving or transmission of telephone rings and data |
| 11/15/2001 | WO2001086999A1 Network termination unit for a user terminal and method for power-dissipation optimised generation of a call voltage in a user terminal |
| 11/15/2001 | WO2001086934A2 Method for indicating a call reaching a communication terminal |
| 11/15/2001 | US20010041600 Method for handling phone numbers in mobile station and mobile station |
| 11/14/2001 | EP1154670A1 Network termination device for a user terminal of a telecommunications network and a procedure for the supply of a ringing open circuit voltage for a user terminal of a Telecommunication network |
| 11/14/2001 | EP0676862B1 Direct-current impressing circuit |
| 11/14/2001 | CN1321929A Method for compressing digital interface file of musical instrument instruction |
| 11/13/2001 | US6317593 Intelligent cellular telephone function |
| 11/13/2001 | US6317032 Apparatus for informing a user of predetermined condition by vibration |
| 11/08/2001 | WO2001084820A2 Power management for line-powered telecommunication equipments |
| 11/08/2001 | US20010038692 Telephone |
| 11/08/2001 | DE10020745A1 Cordless call indicator for telephone, emits ringing sound or light in response to call reception indication signal received from telephone |
| 11/07/2001 | EP1152394A1 Method for compressing a MIDI file |
| 11/07/2001 | EP1151595A1 Telecommunication terminal |
| 11/06/2001 | US6314306 Text message originator selected ringer |
| 11/01/2001 | WO2001082584A2 System and method for providing power over a home phone line network |
| 11/01/2001 | US20010036821 Computer-based method and apparatus for controlling, monitoring, recording and reporting wireless communications |
| 11/01/2001 | US20010036819 Two-way radio with silent annunciation |
| 11/01/2001 | US20010036262 Subscriber line interface circuit |
| 10/30/2001 | US6310954 Ringer circuit |
| 10/25/2001 | US20010034252 Portable cordless telephone having an improved ringing device |
| 10/25/2001 | US20010033649 Speakerphone accessory for a telephone instrument |
| 10/25/2001 | US20010033647 System for internet telephony devices to announce incoming calls |
| 10/25/2001 | US20010033567 Device for providing services and for transmission of data in the home |
| 10/25/2001 | US20010033565 Scheduled internet protocol telephone instrument system |
| 10/25/2001 | DE10018306A1 Telephone with ear-piece output circuit |
| 10/24/2001 | EP1148756A1 Method for data delivery in a telecommunication system and exchange therefore |
| 10/24/2001 | EP1147646A1 A portable telecommunication apparatus for multiple audio accessories |
| 10/23/2001 | US6308086 Portable cellular phone with custom melody ring setting capability |
| 10/23/2001 | US6307891 Method and apparatus for freezing a communication link during a disruptive event |
| 10/18/2001 | US20010031633 Method and apparatus for providing context-based call transfer operation |
| 10/18/2001 | US20010031048 Method and system for data communication |
| 10/18/2001 | US20010031047 Constant current line circuit with class features |
| 10/17/2001 | EP1145570A2 Device for providing services and transmitting data in the home |
| 10/17/2001 | EP1145385A2 Jack assembly |
| 10/17/2001 | EP0904619B1 Circuitry for voltage pole reversal |
| 10/16/2001 | US6304765 Foldable communication device and method |
| 10/16/2001 | US6304656 Power supplying to CPU of telephone |
| 10/16/2001 | US6304170 Alerting apparatus |
| 10/10/2001 | EP1142364A2 Method for implementing a sound message send/receive service in a telecommunication network |
| 10/10/2001 | EP1142295A1 System and method of power limiting call processing in telecommunications equipment |
| 10/10/2001 | EP1142294A1 Circuit and method for remote feeding |
| 10/10/2001 | EP1142280A1 Voltage and current protection arrangement for a telephone subscriber line interface circuit |
| 10/09/2001 | US6301358 Dual-slope current battery-feed circuit |
| 10/04/2001 | US20010027096 Method for interrupting an idle state of a communication unit in a communication system, especially in a radio communication system |
| 10/02/2001 | US6298133 Telephone line interface architecture using ringer inputs for caller ID data |
| 10/02/2001 | US6298132 Ringing-tone control device for telephone set, using audio signal sent by caller |
| 09/27/2001 | WO2000030219A3 Jack assembly |
| 09/27/2001 | US20010024967 Energy-saving circuit based on control of a display device of a terminal for mobile communication in dependence on the operating state |
| 09/27/2001 | US20010024965 Mobile communication terminal and ringing method thereof |
| 09/27/2001 | US20010024490 Portable telephone set and method for inputting said incoming call reporting melody |
| 09/27/2001 | EP1145385A3 Jack assembly |
| 09/26/2001 | CN1071975C Power coupler for coupling power from a transmission line to a node thereon |
| 09/20/2001 | WO2001069893A1 Mobile terminal, and method and system for controlling mobile terminal |
| 09/20/2001 | WO2001069892A2 Line current protection circuit and method for linear and nonlinear hold circuit |
| 09/20/2001 | WO2001069697A2 Continuity testing in communication networks |
| 09/20/2001 | US20010023197 Radio communication device capable of generating ringer melody |
| 09/20/2001 | US20010023196 Foldable portable telephone set |
| 09/20/2001 | US20010023195 Cellular mobile telephone apparatus and an alarm device therefor |
| 09/20/2001 | US20010023182 Cellular phone with special standby feature |
| 09/20/2001 | DE10012442A1 Telecommunications terminal has of reproduction arrangement whose operation is determined by predefined parameters varied depending on signals acquired by sensor arrangement |
| 09/19/2001 | CN1313715A Foldable portable telephone |
| 09/18/2001 | US6292668 Communication network terminal supporting a plurality of applications |
| 09/13/2001 | WO2000001131A3 Piezoelectric vibrational and acoustic personal communication device |