ES2148148T3 - Metodo para insertar informacion en un procedimiento de establecimiento de enlace y modems que incorporan este procedimiento. - Google Patents
Metodo para insertar informacion en un procedimiento de establecimiento de enlace y modems que incorporan este procedimiento.Info
- Publication number
- ES2148148T3 ES2148148T3 ES91907379T ES91907379T ES2148148T3 ES 2148148 T3 ES2148148 T3 ES 2148148T3 ES 91907379 T ES91907379 T ES 91907379T ES 91907379 T ES91907379 T ES 91907379T ES 2148148 T3 ES2148148 T3 ES 2148148T3
- Authority
- ES
- Spain
- Prior art keywords
- auxiliary package
- modem
- signal
- sequence
- modems
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/12—Arrangements providing for calling or supervisory signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Communication Control (AREA)
- Telephonic Communication Services (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
SE PRESENTA UN METODO PARA EMBEBER INFORMACION ADICIONAL (POR EJEMPLO UNA FUNCION DE PALABRA CLAVE) EN LA GESTION DE MODEMS DE COMUNICACION. UN PAQUETE AUXILIAR (20B) QUE CONTIENE LA INFORMACION ADICIONAL SE COLOCAN EN LA SECUENCIA DE GESTION DE UN MODEM DE FORMA QUE NO PUEDA SER CONFUNDIDA CON EL MODEM RECEPTOR CON OTRAS SEÑALES QUE NECESITAN SER ENVIADAS POR EL MODEM COMUNICAR EN EL PROTOCOLO DE GESTION DEL MODEM. EL MODEM RECEPTOR BUSCA EL PAQUETE AUXILIAR (20B) Y SI EL PAQUETE AUXILIAR NO SE RECIBE, O SI LA INFORMACION EN EL PAQUETE AUXILIAR NO ES SUFICIENTE PARA ESTABLECER LA COMUNICACION, EL MODEM RECEPTOR CANCELA LA LLAMADA. EN LOS MODEMS TIPO V. 32, EL PAQUETE AUXILIAR (20B) ES COLOCADO POR EL MODEM COMUNICADOR EN CUALQUIER LUGAR EN LA SECUENCIA DE COLA (TRN) DESPUES DE LOS 1280 INTERVALOS DE SIMBOLO REQUERIDOS, Y ANTES DE LA SECUENCIA R2 Y EL PAQUETE AUXILIAR (20B) SE GENERA DE FORMA QUE NO PUEDA SER CONFUNDIDO CON LA SECUENCIA R2. PARA GARANTIZAR QUE EL PAQUETE AUXILIAR SEA DISCERNIBLE Y QUE NO EXISTA CONFUSION CON OTRAS SEÑALES, EL PAQUETE AUXILIAR (20B) COMPRENDE DOS SEÑALES MULTIPLEXADAS; UNA SEÑAL DE INFORMACION A UNA VELOCIDAD DE 2400 BITS / SEGUNDOS QUE INCLUYE UNA SEÑALIZACION DE BARRIDO (50B) Y UNA SEÑALIZACION DE COMIENZO FORMATEADA HDLC (52B), LA CLAVE DE ACCESO (70B), UNA SUMA DE COMPROBACION (75B) Y UNA SEÑAL DE PARO (78B); Y UNA SEGUNDA SEÑAL DE PREVENCION R2 DE 2400 BITS / SEGUNDO QUE ESTA CODIFICADA PARA QUE SEA COMPATIBLE CON LA SEÑALIZACION DE BARRIDO (50B) Y PARA GARANTIZAR QUE PRESCINDIENDO DE LA SEÑAL FORMATEADA HDLC, EL PAQUETE AUXILIAR COMPUESTO (20B) NO PUEDA CONSTITUIR UNA SECUENCIA R2.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/502,161 US5146472A (en) | 1990-03-28 | 1990-03-28 | Method for imbedding information in modem handshake procedure and modems incorporating the same |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2148148T3 true ES2148148T3 (es) | 2000-10-16 |
Family
ID=23996621
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES91907379T Expired - Lifetime ES2148148T3 (es) | 1990-03-28 | 1991-03-14 | Metodo para insertar informacion en un procedimiento de establecimiento de enlace y modems que incorporan este procedimiento. |
Country Status (7)
Country | Link |
---|---|
US (1) | US5146472A (es) |
EP (1) | EP0522047B1 (es) |
AU (1) | AU646206B2 (es) |
CA (1) | CA2078866C (es) |
DE (1) | DE69132208T2 (es) |
ES (1) | ES2148148T3 (es) |
WO (1) | WO1991015067A1 (es) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5493609A (en) * | 1990-09-27 | 1996-02-20 | Radish Communications Systems, Inc. | Telecommunication system for automatic switching between voice and data communications |
US5317594A (en) * | 1992-01-13 | 1994-05-31 | General Datacomm, Inc. | Systems for and method of identifying V.fast modem within existing automatic interworking procedure standards |
US5311596A (en) * | 1992-08-31 | 1994-05-10 | At&T Bell Laboratories | Continuous authentication using an in-band or out-of-band side channel |
US5617423A (en) * | 1993-01-08 | 1997-04-01 | Multi-Tech Systems, Inc. | Voice over data modem with selectable voice compression |
US5619725A (en) * | 1994-01-21 | 1997-04-08 | Alphanet Telecom Inc. | Method for auxiliary software providing instruction for facsimile modem to simulate a telephone communication while connecting to store and forward computer to receive communication |
US5917853A (en) * | 1994-06-30 | 1999-06-29 | Academy Of Applied Science | Method of and apparatus for training high speed digital telephonic modems to obviate imperfections in the telephone channel, while simultaneously allowing conversation |
US5978481A (en) * | 1994-08-16 | 1999-11-02 | Intel Corporation | Modem compatible method and apparatus for encrypting data that is transparent to software applications |
US5732104A (en) * | 1994-12-14 | 1998-03-24 | Motorola, Inc. | Signalling techniques and device for high speed data transmission over voiceband channels |
US6101608A (en) * | 1997-02-20 | 2000-08-08 | Compaq Computer Corporation | Method and apparatus for secure remote wake-up of a computer over a network |
JP3253916B2 (ja) | 1998-03-13 | 2002-02-04 | 松下電送システム株式会社 | 通信速度切換装置 |
US6286105B1 (en) * | 1998-04-01 | 2001-09-04 | 3Com Corporation | Method for implementing link-level security to enforce access privileges |
US6173405B1 (en) | 1998-05-29 | 2001-01-09 | 3Com Corporation | Secure communications card modem and method of using same |
US6647099B1 (en) | 1998-06-08 | 2003-11-11 | Hewlett-Packard Development Company, L.P. | Administrative control and security of modems |
US6625208B2 (en) * | 1998-09-25 | 2003-09-23 | Intel Corporation | Modem using batch processing of signal samples |
US6502138B2 (en) * | 1998-09-25 | 2002-12-31 | Intel Corporation | Modem with code execution adapted to symbol rate |
US6490628B2 (en) * | 1998-09-25 | 2002-12-03 | Intel Corporation | Modem using a digital signal processor and a signal based command set |
US6661848B1 (en) | 1998-09-25 | 2003-12-09 | Intel Corporation | Integrated audio and modem device |
US6625640B1 (en) * | 1999-09-01 | 2003-09-23 | Inventec Corporation | Modem having embedded network transmission protocols |
US6493355B1 (en) * | 1999-09-27 | 2002-12-10 | Conexant Systems, Inc. | Method and apparatus for the flexible use of speech coding in a data communication network |
US6731618B1 (en) * | 2000-10-20 | 2004-05-04 | Airvana, Inc. | Coding for multi-user communication |
US7676224B1 (en) * | 2001-07-06 | 2010-03-09 | At&T Mobility Ii Llc | Enhanced communication service for predicting and handling communication interruption |
US6973567B1 (en) | 2001-09-14 | 2005-12-06 | Cisco Technology, Inc. | Early authentication during modem training |
US6975714B1 (en) * | 2002-03-19 | 2005-12-13 | Enginuity Technologies Group, Inc. | Method and apparatus for defeating predictive telemarketing systems by simulating facsimile machines or modems upon answering incoming calls |
FR2843819B1 (fr) * | 2002-08-21 | 2006-11-10 | Thomson Licensing Sa | Appareil electrique securise contre le vol, systeme antivol comportant un tel appareil et procede d'appariement d'appareils electriques |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO852765L (no) * | 1984-07-24 | 1986-01-27 | Universal Data Systems Inc | Fremgangsmaate og apparat for automatisk identifisering av et svarende modem i et nettverk. |
US4812994A (en) * | 1985-08-06 | 1989-03-14 | Pitney Bowes Inc. | Postage meter locking system |
US4868864A (en) * | 1986-07-15 | 1989-09-19 | Hayes Microcomputer Products, Inc. | Autocorrelating 2400 bps handshake sequence detector |
US4782498A (en) * | 1986-08-28 | 1988-11-01 | Hayes Microcomputer Products, Inc. | Modem with improved handshaking capability |
US4811377A (en) * | 1987-07-31 | 1989-03-07 | Motorola, Inc. | Secure transfer of radio specific data |
US4964163A (en) * | 1988-04-04 | 1990-10-16 | Motorola, Inc. | Method and apparatus for controlling access to a communication system |
GB2222505B (en) * | 1988-09-02 | 1993-06-16 | Plessey Co Plc | A method of establishing a radio link in one of a plurality of channels between two radio units |
US4905282A (en) * | 1988-10-19 | 1990-02-27 | Hayes Microcomputer Products, Inc. | Feature negotiation protocol and dynamically adjustable retraining sequence for a high speed half duplex modem |
-
1990
- 1990-03-28 US US07/502,161 patent/US5146472A/en not_active Expired - Lifetime
-
1991
- 1991-03-14 EP EP91907379A patent/EP0522047B1/en not_active Expired - Lifetime
- 1991-03-14 CA CA002078866A patent/CA2078866C/en not_active Expired - Fee Related
- 1991-03-14 AU AU75534/91A patent/AU646206B2/en not_active Ceased
- 1991-03-14 ES ES91907379T patent/ES2148148T3/es not_active Expired - Lifetime
- 1991-03-14 DE DE69132208T patent/DE69132208T2/de not_active Expired - Fee Related
- 1991-03-14 WO PCT/US1991/001713 patent/WO1991015067A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
CA2078866A1 (en) | 1991-09-29 |
EP0522047B1 (en) | 2000-05-17 |
WO1991015067A1 (en) | 1991-10-03 |
CA2078866C (en) | 2000-12-12 |
EP0522047A1 (en) | 1993-01-13 |
DE69132208D1 (de) | 2000-06-21 |
EP0522047A4 (en) | 1995-04-19 |
DE69132208T2 (de) | 2001-02-01 |
AU7553491A (en) | 1991-10-21 |
US5146472A (en) | 1992-09-08 |
AU646206B2 (en) | 1994-02-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES2148148T3 (es) | Metodo para insertar informacion en un procedimiento de establecimiento de enlace y modems que incorporan este procedimiento. | |
BR9906596A (pt) | Processo para proteger conteúdo transmitido como uma corrente de dados, sistema de proteção contra cópia para proteger conteúdo, e, dispositivo fonte para proteger conteúdo, e dispositivo receptor para receber conteúdo | |
FI19992837A (fi) | Menetelmä tiedonsiirron tehostamiseksi ja tiedonsiirtoprotokolla | |
NO981654D0 (no) | Bore- eller foringsr÷r-beskyttelsesanordning | |
SE9400479L (sv) | Anordning vid djupmarkeringssystem | |
MX9405038A (es) | Un metodo para comunicaciones punto a punto dentro de sistemas decomunicacion seguros. | |
SE9602732L (sv) | Förfarande och anordning vid förstörelse av föremål | |
DK493489D0 (da) | Sikkerhedssystem omfattende en signalsender | |
KR880003493A (ko) | 디지탈 전송 장치 및 방법 | |
DK0451056T3 (da) | Elektronisk anordning til telefonsystem | |
ATE123216T1 (de) | Zahnpasta gegen zahnbelag. | |
FR2714956B1 (fr) | Dispositif lumineux de signalisation, notamment destiné à assurer un balisage de sécurité. | |
FR2698400B1 (fr) | "Dispositif parasismique" pour ouvrages de construction notamment pour ponts et plate-forme offshore. | |
FR2518285B1 (fr) | Dispositif d'identification d'une information, en particulier combinaison electronique serrure-clef | |
IT1216672B (it) | Telestampa presso un utente sistema e apparecchiatura di telefonico di informazione provenienti da enti di pubblica utilita', o simili, conpossibilita' di interazione e suoi metodi di realizzazione e di utilizzazione. | |
ES2188244T3 (es) | Sistema de acceso pasivo para vehiculos. | |
GB2323212A (en) | Secure semiconductor device | |
ES2109346T3 (es) | Deteccion de rafagas de error. | |
FR2641434B1 (fr) | Dispositif de transmission d'informations utilisant un codage statistique | |
FR2699305B1 (fr) | Dispositif d'utilisation de fonctions de pseudo point de communication déportées (pseudo sockets). | |
FR2598964B1 (fr) | Dispositif de mise en place d'embouts a travers un film perfore et film perfore equipe d'embouts | |
FR2686207B1 (fr) | Telecopieur videotex. | |
DK1131794T3 (da) | Fremgangsmåde og indretninger til trykning af et frankeringsmærke på et dokument | |
MA24634A1 (fr) | Enveloppe de protection d'un dispositif de raccordement a un reseau de distribution d'energie ou de fluide. | |
FI935343A0 (fi) | Dubbelfoerbindelser |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
Ref document number: 522047 Country of ref document: ES |