公开(公告)号：EP0984657A2

公开(公告)日：2000-03-08

申请号：EP99117186.9

申请日：1999-09-01

申请人： Intersil Corporation

发明人： Ludeman, Christopher

IPC分类号： H04Q11/04

CPC分类号： H04Q11/04 ,  H04Q2213/13003 ,  H04Q2213/13082 ,  H04Q2213/1319 ,  H04Q2213/13305 ,  H04Q2213/1332 ,  H04Q2213/13381

摘要： A subscriber loop interface circuit (32) and method for externally programming the on-hook, off-hook, and transition states of the subscriber loop interface circuit (40). The circuit having an off-hook overhead sufficient for long loop applications and having a continuous loop current to loop voltage relationship. The circuit may have plural means for generating reference currents for comparison with loop currents.

摘要翻译： 一种用户环路接口电路（32）和用于外部编程用户环路接口电路（40）的挂机，摘机和转换状态的方法。 该电路具有足够长的环路应用的脱钩开关并具有连续的环路电流与环路的电压关系。 电路可以具有用于产生参考电流以便与环路电流进行比较的多个装置。

公开(公告)号：EP0930800A2

公开(公告)日：1999-07-21

申请号：EP98303476.0

申请日：1998-05-01

申请人： AT&T Corp.

发明人： Gerszberg, Irwin ,  Miller, Robert Raymond, II ,  Russel, Jesse Eugene ,  Wallace, Edward L.

IPC分类号： H04Q11/04 ,  H04N7/14 ,  H04M1/65

CPC分类号： H04L12/2881 ,  H04L12/14 ,  H04L12/2856 ,  H04M1/247 ,  H04M1/57 ,  H04M1/6505 ,  H04N7/141 ,  H04N7/148 ,  H04N21/4104 ,  H04N21/42676 ,  H04N21/43632 ,  H04Q11/04 ,  H04Q2213/13039 ,  H04Q2213/13076 ,  H04Q2213/13082 ,  H04Q2213/1309 ,  H04Q2213/13091 ,  H04Q2213/13093 ,  H04Q2213/13096 ,  H04Q2213/13103 ,  H04Q2213/13166 ,  H04Q2213/13176 ,  H04Q2213/1319 ,  H04Q2213/13202 ,  H04Q2213/13204 ,  H04Q2213/13209 ,  H04Q2213/13216 ,  H04Q2213/1329 ,  H04Q2213/13292 ,  H04Q2213/13332 ,  H04Q2213/13337 ,  H04Q2213/13367 ,  H04Q2213/13377 ,  H04Q2213/13389

摘要： A video enable answering machine having many new features including customized video announcement messages, caller ID based video announcement messages, and time based video announcement messages.

摘要翻译： 具有许多新特征的视频启用应答机，包括定制视频通告消息，基于呼叫者ID的视频通告消息和基于时间的视频通告消息。

公开(公告)号：EP0903927A1

公开(公告)日：1999-03-24

申请号：EP97830462.4

申请日：1997-09-23

申请人： STMicroelectronics S.r.l.

发明人： Lari, Ferdinando ,  Antonini, Carlo ,  Consiglio, Pietro

IPC分类号： H04M19/08 ,  H04Q11/04 ,  H04L12/00

CPC分类号： H04Q11/0435 ,  H04L12/00 ,  H04M19/08 ,  H04Q2213/13003 ,  H04Q2213/1308 ,  H04Q2213/13082 ,  H04Q2213/1309 ,  H04Q2213/13166 ,  H04Q2213/13202 ,  H04Q2213/13209 ,  H04Q2213/13305 ,  H04Q2213/1332 ,  H04Q2213/13322 ,  Y02D70/144

摘要： The invention relates to a MOS transistors substitutive circuit having a transformer/data interface function, in particular for ISDN networks, comprising first (11a) and second (11b) power supply/transmitter blocks, the first power supply/transmitter block (11a) being connected between a voltage reference (V) and a first data interface (RX), and the second power supply/transmitter block (11b) being connected between a ground potential reference (GND) and a second data interface (TX), both power supply/transmitter blocks being connected to a supply voltage reference (VDD). The MOS transistors substitutive circuit according to the invention comprises first (12) and second (12') MOS transistor pairs connected to the voltage reference (V), the MOS transistors being diode configured and held in their saturation range, so as to have a high A.C. impedance and virtually zero D.C. impedance, thereby minimizing power dissipation through the substitutive circuit.
The invention also concerns a control and driving switch configuration for a network termination of at least first (11) and second (11') MOS transistors substitutive circuits according to the invention, operating respectively in a first condition ("normal condition") of operation of the network termination characterized by the presence of the polarity reverse control signal (Scrp), and a second condition ("RM emergency condition") of operation of the network termination characterized by the absence of the polarity reverse control signal (Scrp). The control configuration selects the voltage reference being applied to the power supply/transmitter blocks.

摘要翻译： 本发明涉及一种具有变压器/数据接口功能的MOS晶体管替代电路，特别是对于ISDN网络，包括第一（11a）和第二（11b）电源/发射器模块，第一电源/发射器模块（11a） 连接在电压基准（V）和第一数据接口（RX）之间，并且第二电源/发射器模块（11b）连接在接地电位基准（GND）和第二数据接口（TX）之间，两个电源 /发射机模块连接到电源电压基准（VDD）。 根据本发明的MOS晶体管替代电路包括连接到电压基准（V）的第一（12）和第二（12'）MOS晶体管对，所述MOS晶体管被二极管配置并保持在其饱和范围内，以具有 高交流阻抗和几乎零直流阻抗，从而使通过替代电路的功率消耗最小化。 本发明还涉及根据本发明的至少第一（11）和第二（11'）MOS晶体管替代电路的网络终端的控制和驱动开关配置，分别在操作的第一条件（“正常状态”）中操作 的网络终端的特征在于极性反转控制信号（Scrp）的存在，以及以不存在极性反向控制信号（Scrp）为特征的网络终端的操作的第二条件（“RM紧急状况”）。 控制配置选择施加到电源/发射器模块的电压基准。

公开(公告)号：EP0712561B1

公开(公告)日：1998-07-08

申请号：EP94922823.3

申请日：1994-07-28

申请人： KRONE Aktiengesellschaft

发明人： Schiffel, Reinhard, Dr. ,  Jäckel, Klaus, Dr.-Ing. ,  Stadler, Bruno, Dipl.-Ing. ,  Vogel, Holger, Dipl.-Ing.

IPC分类号： H04Q7/24 ,  H04Q11/04 ,  H04Q7/30

CPC分类号： H04W88/08 ,  H04Q11/0457 ,  H04Q2213/098 ,  H04Q2213/099 ,  H04Q2213/1302 ,  H04Q2213/1304 ,  H04Q2213/13082 ,  H04Q2213/13094 ,  H04Q2213/13098 ,  H04Q2213/13106 ,  H04Q2213/13202 ,  H04Q2213/13204 ,  H04Q2213/13209 ,  H04Q2213/13213 ,  H04Q2213/13298 ,  H04Q2213/13299 ,  H04Q2213/13322 ,  H04Q2213/383 ,  H04W84/14

摘要： A local ISDN radio transmission system is organised as a local radio cell that consists of a central stationary radio station and of a plurality of decentralised subscriber radio sets. The radio transmission system is connected to the access connection elements (ISDN base access ports) of a local central office, subcentre or private branch exchange. The number of radio subscribers is larger than the number of used duplex radio channels. The invention ensures to the radio subscribers a connection with a SO-interface. The radio transmission in the subscriber area allows covering range limitations to be lifted, which otherwise result from attenuation and propagation time problems encountered in the case of wire transmission. According to the invention, the radio transmission arrangement is inserted into a ISDN two-wire access connection circuit with an intermediate repeater, in the section that extends between the intermediate repeater and the network termination. After an activation request, a radio channel is allocated within the carency and monitoring times for activating the ISDN two-wire access connection circuit. In order to ensure an efficient use of the available transmission bandwidth, an independent radio channel for control, organisation and monitoring purposes is dispensed with. The required instructions and information are transmitted in the free radio channels. The subscriber radio sets recognize free channels thanks to a special arrangement of the synchronisation word that differs from that of the ISDN transmission.

公开(公告)号：EP0712561A1

公开(公告)日：1996-05-22

申请号：EP94922823.0

申请日：1994-07-28

申请人： SCHIFFEL, Reinhard ,  JÄCKEL, Klaus ,  STADLER, Bruno ,  VOGEL, Holger

发明人： SCHIFFEL, Reinhard ,  JÄCKEL, Klaus ,  STADLER, Bruno ,  VOGEL, Holger

IPC分类号： H04Q11 ,  H04W88 ,  H04W84

CPC分类号： H04W88/08 ,  H04Q11/0457 ,  H04Q2213/098 ,  H04Q2213/099 ,  H04Q2213/1302 ,  H04Q2213/1304 ,  H04Q2213/13082 ,  H04Q2213/13094 ,  H04Q2213/13098 ,  H04Q2213/13106 ,  H04Q2213/13202 ,  H04Q2213/13204 ,  H04Q2213/13209 ,  H04Q2213/13213 ,  H04Q2213/13298 ,  H04Q2213/13299 ,  H04Q2213/13322 ,  H04Q2213/383 ,  H04W84/14

摘要： A local ISDN radio transmission system is organised as a local radio cell that consists of a central stationary radio station and of a plurality of decentralised subscriber radio sets. The radio transmission system is connected to the access connection elements (ISDN base access ports) of a local central office, subcentre or private branch exchange. The number of radio subscribers is larger than the number of used duplex radio channels. The invention ensures to the radio subscribers a connection with a SO-interface. The radio transmission in the subscriber area allows covering range limitations to be lifted, which otherwise result from attenuation and propagation time problems encountered in the case of wire transmission. According to the invention, the radio transmission arrangement is inserted into a ISDN two-wire access connection circuit with an intermediate repeater, in the section that extends between the intermediate repeater and the network termination. After an activation request, a radio channel is allocated within the carency and monitoring times for activating the ISDN two-wire access connection circuit. In order to ensure an efficient use of the available transmission bandwidth, an independent radio channel for control, organisation and monitoring purposes is dispensed with. The required instructions and information are transmitted in the free radio channels. The subscriber radio sets recognize free channels thanks to a special arrangement of the synchronisation word that differs from that of the ISDN transmission.

公开(公告)号：EP0639021A1

公开(公告)日：1995-02-15

申请号：EP94107415.5

申请日：1994-05-13

申请人： DeTeWe - Deutsche Telephonwerke Aktiengesellschaft & Co.

发明人： Neuhaus, Hans-Jürgen

IPC分类号： H04M19/00

CPC分类号： H04M19/005 ,  H04Q2213/13082 ,  H04Q2213/13305

摘要： Eine Schaltungsanordnung für eine übertragerlose physikalische Schnittstelle zur Speisung von Telekommunikations-Endgeräten dient der gleichzeitigen Übertragung von Signalen in beiden Richtungen auf einer zweiadrigen Kupferleitung. Die Signalein- und -auskopplung zu bzw. von einem Schnittstellenbaustein wird über Kondensatoren vorgenommen. Bei asymmetrischer Schaltungsanordnung ist eine elektronische Transistordrossel (D) in Emitter-Schaltung vorgesehen, bei symmetrischer Schaltungsanordnung sind zwei elektronische Transistordrosseln (D1, D2) komplementär zueinander ausgelegt. Kondensatoren (C1, C2) der elektronischen Transistordrosseln (D1, D2) dienen der Bildung eines hohen Wechselstromwiderstandes bzw der Ein- und Auskopplung der Signale.

摘要翻译： 用于向电信终端供电的无变压器物理接口的电路装置用于在双线铜线上同时在两个方向上传输信号。 这些信号经由电容器耦合到接口芯片中和从接口芯片耦合。 如果电路布置不平衡，则提供电子共极 - 发射极晶体管扼流圈（D），并且如果电路布置平衡，则两个电子晶体管扼流器（D1，D2）被配置在互补电路中。 电子晶体管扼流器（D1，D2）的电容器（C1，C2）用于形成相对于信号的耦合和输出的高阻抗。

公开(公告)号：EP0160411A2

公开(公告)日：1985-11-06

申请号：EP85302304.2

申请日：1985-04-02

申请人： NORTHERN TELECOM LIMITED

发明人： Hingston, Joseph William ,  Urbach, Stephen Thomas

IPC分类号： H04M19/08 ,  H04M19/00

CPC分类号： H04M19/08 ,  H04M19/001 ,  H04Q2213/1308 ,  H04Q2213/13082 ,  H04Q2213/13166 ,  H04Q2213/13302

摘要： 57 A line feed circuit for a digital signal loop includes an alternating current coupling circuit with tip and ring transformer windings (18, 15) being joined by a capcitor (19) for transmitting bipolar AMI time compression multiplex (TCM) signals between a telephone network and a telephone line (100). The line feed circuit also includes a direct current coupling circuit having a current limiting circuit (21, 22) being connected in series with one of the tip and ring windings and a power terminal (13)- In operation direct energizing current for supplying a remote terminal apparatus or station set with energizing current is available up to a predetermined limit with the advantage that power dissipation in the line feed circuit is minimized.

摘要翻译： 用于数字信号回路的换行电路包括交流电耦合电路，其中尖端和环形变压器绕组（16,15）由电容器（19）连接，用于在电话网络与电话网络之间传输双极性AMI时间压缩复用（TCM）信号 电话线（100）。 线路馈送电路还包括直流耦合电路，其具有与尖端和环绕组中的一个串联连接的限流电路（21,22）和电源端子（13） - 在操作中直接通电电流用于提供远程 具有通电电流的终端设备或站设置可达到预定极限，其优点是使馈线电路中的功率消耗最小化。