| Patents for H04M 19 - Current supply arrangements for telephone systems (7,475) |
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| 06/13/2002 | US20020071548 Electroacoustic apparatus having ringing signal generation means capable of producing a subjective bass perception |
| 06/13/2002 | US20020071537 Computer-based method and apparatus for controlling, monitoring, recording and reporting telephone access |
| 06/13/2002 | US20020071058 Communication terminal apparatus |
| 06/12/2002 | EP1213907A2 switched mode current feed methods for telephony subcriber loops |
| 06/12/2002 | CN1086266C Ringing-tone control device for telephone set |
| 06/06/2002 | WO2002045388A2 Communication terminal with user-configurable memory |
| 06/06/2002 | WO2002009393A3 Phone silence system |
| 06/05/2002 | EP1211879A1 Apparatus for connecting a subscriber line to a high frequency link and a low frequency link |
| 06/05/2002 | CN1352851A Caller ID preview for mobile telephones |
| 06/04/2002 | US6400958 Communication network terminal supporting a plurality of applications |
| 06/04/2002 | US6400803 Voice over digital subscriber line call redirection for lifeline service |
| 05/29/2002 | EP1208695A2 Method for managing the power which can be transmitted from a communications network to a network termination device via a line |
| 05/29/2002 | DE10058637A1 Mobile telephone has separate current supply for emergency case in form of battery or capacitor; emergency call is triggered for police and fire services |
| 05/29/2002 | CN1351460A Method for editing ring tone in wireless mobile terminal |
| 05/28/2002 | US6396922 Telecommunications terminal card |
| 05/23/2002 | US20020061772 System and method for sounding a music accompanied by light or vibration |
| 05/23/2002 | DE10054943A1 Kommunikationseinrichtung Communication device |
| 05/22/2002 | EP1206872A1 Reduced power line driver |
| 05/22/2002 | EP1206871A2 Telephone terminal apparatus and communication method |
| 05/21/2002 | US6393105 Method and apparatus for monitoring local telephony service power on a hybrid fiber-coax network |
| 05/21/2002 | US6393104 Enhanced life-line service for cable telephone customers |
| 05/21/2002 | CA2242007C Distinctive ringing and distinctive call-waiting tones in an isdn |
| 05/16/2002 | US20020058500 Response message transmitter and response message transmitting method in cellular mobile telephone apparatus and recording medium recording program for executing the method |
| 05/16/2002 | US20020058443 Jack assembly |
| 05/15/2002 | CN1349705A Miniature piezo-ceramic vibrators for wireless communicaltion devices and cellular telephones |
| 05/14/2002 | US6389302 Methods and apparatus for causing wireless communication devices to vibrate via piezo-ceramic vibrators |
| 05/14/2002 | US6389288 Mobile communication terminal capable of executing location-related services |
| 05/14/2002 | US6389135 Method and apparatus for deriving power from a clock signal coupled through capacitors |
| 05/14/2002 | US6389134 Call progress monitor circuitry and method for a communication system |
| 05/10/2002 | WO2002037824A1 Voltage regulator and method of regulating |
| 05/10/2002 | WO2002037807A1 Method for informing reception of call |
| 05/10/2002 | WO2002037804A2 Communication device with data interface in the charging base station |
| 05/10/2002 | WO2002037369A2 Downloadable multimedia content and method for accounting |
| 05/08/2002 | EP1010311B1 Unbalanced ringing using a balanced ringing generator of a subscriber line interface circuit |
| 05/08/2002 | EP0947090B1 Method and device for remote feeding several consumers of the same type from one energy source |
| 05/08/2002 | DE10052932A1 Auswahl eines Rufsignals Selecting a ringing signal |
| 05/07/2002 | US6385466 Portable terminal device |
| 05/07/2002 | US6385235 Direct digital access arrangement circuitry and method for connecting to phone lines |
| 05/07/2002 | CA2253105C Pc server telecommunications power system |
| 05/07/2002 | CA2164218C Dial in-bound meter interface unit which derives its power from a telephone line |
| 05/02/2002 | WO2002035821A1 Call-detection device in telecommunication terminals with analogue exchange interfaces |
| 05/02/2002 | WO2002035717A2 Electronic device to be worn on the body and construction system for such devices |
| 05/02/2002 | US20020052225 Feature timer functionality for a wireless communication unit |
| 05/02/2002 | US20020052224 Method for editing terminating ring tone in a mobile wireless terminal |
| 05/02/2002 | EP1202547A2 Selection of a ringing signal |
| 05/02/2002 | EP0909499A4 Telephone identification calling apparatus and procedures |
| 05/02/2002 | DE10052453A1 Am Körper tragbares elektronisches Gerät und System zum Auf-bau solcher Geräte The body portable electronic device and system for on-bau such devices |
| 05/01/2002 | CN1347261A Control of simultaneous displaying music information and different information on mobile communication terminal |
| 04/25/2002 | US20020048362 Apparatus and method for regulating an SLIC supply voltage |
| 04/24/2002 | EP1198943A1 Telephone answering device with timer control |
| 04/24/2002 | CN1346225A Foldable communication terminal and indication control method |
| 04/24/2002 | CN1083675C Audible tone signal processing apparatus |
| 04/23/2002 | US6377823 Cellular mobile telephone apparatus and an alarm device therefor |
| 04/23/2002 | US6377795 Cellular phone with special standby feature |
| 04/23/2002 | US6377681 Signal line driving circuit with self-controlled power dissipation |
| 04/23/2002 | US6375073 Method for crediting or recrediting a data card with a given amount |
| 04/18/2002 | WO2002032105A1 Method and circuit arrangement for detecting ring trip in a wireline telephone network |
| 04/18/2002 | WO2002032087A2 Mobile phone with music reproduction function, music data reproduction method by mobile phone with music reproduction function, and the program thereof |
| 04/18/2002 | US20020045440 Control of synchronous display of melody information and different information on mobile communication terminal |
| 04/18/2002 | US20020045438 Mobile phone with music reproduction function, music data reproduction method by mobile phone with music reproduction function, and the program thereof |
| 04/18/2002 | US20020044643 Ring relay control unit for foreign exchange station |
| 04/17/2002 | EP0791245B1 Driving stage |
| 04/17/2002 | CN1345506A Portable telecommunication apparatus for multiple audio accessories |
| 04/17/2002 | CN1083228C Radio communication apparatus with adjustable alert tone |
| 04/17/2002 | CN1083224C Selective incoming call receiving method in telephone system |
| 04/17/2002 | CN1083205C Method and apparatus for generating ringing signal |
| 04/17/2002 | CN1083204C Supply voltage switching apparatus |
| 04/16/2002 | US6373958 Electrical/mechanical/sound converter and apparatus of electrical/mechanical/sound conversion |
| 04/16/2002 | US6373941 Tone generator for electronic exchange |
| 04/16/2002 | CA2262417C Multimedia data communication system |
| 04/16/2002 | CA2183206C Ringer circuit for generating sine wave |
| 04/11/2002 | WO2000030219A9 Jack assembly |
| 04/11/2002 | US20020042229 Terminal adapted to be powered locally and to receive a remote power feed via a link connecting it to a local area network |
| 04/11/2002 | US20020041677 Low voltage DC powered telecommunications customer service terminal having telephone wire interconnection and a hot-swappable low voltage battery module |
| 04/11/2002 | US20020041676 POTS splitter |
| 04/10/2002 | EP1195980A1 Terminal suitable for being powered locally and remotely through a local network |
| 04/10/2002 | EP1195979A2 Control of synchronous display of melody information and different information on mobile communication terminal |
| 04/10/2002 | CN1082749C Incoming calling system |
| 04/10/2002 | CN1082666C Method for detecting a.c signal of preset frequency, and its detecting circuit |
| 04/09/2002 | US6370389 Communication network terminal supporting a plurality of applications |
| 04/04/2002 | WO2002028111A2 Improved technique for remote power feeding of telephone subscribers |
| 04/04/2002 | WO2002028036A1 System for using a local wireless network to control a device within range of the network |
| 04/04/2002 | WO2001013621A3 Method for managing the power which can be transmitted from a communications network to a network termination device via a line |
| 04/04/2002 | US20020039914 Folding communicaion terminal and display control method therefor |
| 04/04/2002 | US20020039416 System and method for protecting devices connected to a telephone line |
| 04/04/2002 | DE10045488A1 Acoustic call signalisation method for mobile telephone has call signal tone volume reduced after preselected time interval |
| 04/03/2002 | EP1192786A1 Adaptable line driver interface for digital telephone systems |
| 04/03/2002 | EP0866979B1 Method for displaying a "low battery" state in electrical equipment with electrical energy stores and electrical equipment with electrical energy stores with means for displaying a "low battery" state |
| 04/02/2002 | US6366791 System and method for providing a musical ringing tone on mobile stations |
| 03/29/2002 | CA2321509A1 Feed arrangement for a subscriber loop with multi-level current regulation capability |
| 03/28/2002 | WO2001069892B1 Line current protection circuit and method for linear and nonlinear hold circuit |
| 03/28/2002 | WO2001013620A3 Method for managing the power which can be transmitted from a communications network to a network termination device via a line |
| 03/28/2002 | DE10045015A1 Subscriber line interface circuit supply voltage regulation method involves supplying calculated supply voltage to telephone lines so that preset current for analog telephone may flow through lines |
| 03/26/2002 | US6363265 Volume control for an alert generator |
| 03/26/2002 | US6362943 Active current limiter |
| 03/26/2002 | US6362740 Apparatus for providing thermal alert signal and control method thereof in skin-contact type terminal |
| 03/26/2002 | CA2227460C Method and apparatus for providing an alternate telecommunications network |
| 03/21/2002 | US20020034970 Cellular mobile telephone apparatus and an alarm device therefor |
| 03/21/2002 | US20020033690 Low voltage DC powered telecommunications customer service terminal having optical hot-swappable low voltage battery module |
| 03/21/2002 | US20020033416 Network server platform for providing integrated billing for catv, internet, telephony and enhanced bandwidth services |