CA1090425A - Systeme digital de relais radio - Google Patents

Systeme digital de relais radio

Info

Publication number
CA1090425A
CA1090425A CA271,085A CA271085A CA1090425A CA 1090425 A CA1090425 A CA 1090425A CA 271085 A CA271085 A CA 271085A CA 1090425 A CA1090425 A CA 1090425A
Authority
CA
Canada
Prior art keywords
channel
normal
standby
digital
channels
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
Application number
CA271,085A
Other languages
English (en)
Inventor
John A. Adderley
Dennis R. Bester
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Company PLC
Original Assignee
General Electric Company PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Company PLC filed Critical General Electric Company PLC
Application granted granted Critical
Publication of CA1090425A publication Critical patent/CA1090425A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)
CA271,085A 1976-02-06 1977-02-04 Systeme digital de relais radio Expired CA1090425A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4730/76 1976-02-06
GB473076A GB1520153A (en) 1976-02-06 1976-02-06 Digital relay systems

Publications (1)

Publication Number Publication Date
CA1090425A true CA1090425A (fr) 1980-11-25

Family

ID=9782714

Family Applications (1)

Application Number Title Priority Date Filing Date
CA271,085A Expired CA1090425A (fr) 1976-02-06 1977-02-04 Systeme digital de relais radio

Country Status (6)

Country Link
JP (1) JPS52103910A (fr)
CA (1) CA1090425A (fr)
CH (1) CH615546A5 (fr)
DE (1) DE2703625A1 (fr)
GB (1) GB1520153A (fr)
IT (1) IT1073255B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5443408A (en) * 1977-09-13 1979-04-06 Nippon Telegr & Teleph Corp <Ntt> Error control system
JPS55143850A (en) * 1979-04-26 1980-11-10 Nec Corp Pcm line switching system
FR2462065A1 (fr) * 1979-07-24 1981-02-06 Thomson Csf Dispositif de commutation automatique d'equipements de transmission de signaux numeriques et faisceaux hertziens comportant un tel dispositif
DE2939253A1 (de) * 1979-09-27 1981-04-30 Siemens AG, 1000 Berlin und 8000 München Verfahren zum betrieb von datenuebertragungssysteme
JPS5758419A (en) * 1980-09-25 1982-04-08 Fujitsu Ltd Uninterruptible transmission line switching system
JPS58177042A (ja) * 1982-04-09 1983-10-17 Nec Corp 伝送障害低減方式
JP3561787B2 (ja) * 1994-06-30 2004-09-02 和通 藤原 音響振動体感付与方法ならびにその装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2106835C3 (de) * 1971-02-13 1982-07-15 Philips Patentverwaltung Gmbh, 2000 Hamburg Modemkoppler

Also Published As

Publication number Publication date
IT1073255B (it) 1985-04-13
GB1520153A (en) 1978-08-02
CH615546A5 (en) 1980-01-31
JPS52103910A (en) 1977-08-31
DE2703625A1 (de) 1977-08-11

Similar Documents

Publication Publication Date Title
US4234956A (en) Digital relay systems
US4022988A (en) Fault locating apparatus for digital transmission system
KR910001744B1 (ko) 디지탈 전송 시스템용 멀티 플렉싱 장치
GB1478086A (en) High reliability diversity communications system
GB1457058A (en) Loop-structured communication system
CA1090425A (fr) Systeme digital de relais radio
US4908839A (en) Channel switching system
US5515380A (en) Reducing errors in digital communication
EP0243938B1 (fr) Système de surveillance d&#39;un canal de remplacement utilisant un signal de vérification comportant deux configurations de code à n bits différentes assemblées séquentiellement et aléatoirement
US4773081A (en) Channel switching system
US3962646A (en) Squelch circuit for a digital system
CA1066421A (fr) Appareil et methode de codage distinct de chacun des canaux dans un systeme de transmission numerique
US3663761A (en) Time division multiplex transmission system
JP2637796B2 (ja) 回線切替方式
US6456595B1 (en) Alarm indication signal detection in the presence of special line codes in DS1 (T1) telephone circuits
US4426711A (en) Process for the transmission of service signals for a digital radio beam, as well as transmitter and receiver for using such a process
Schneider et al. A N+ 2 protection switching system for synchronous STM-1 signals and plesiochronous 140 Mbit/s signals by using two carrier technique
JP2616695B2 (ja) 回線切替装置
SU1764177A1 (ru) Устройство дл автоматического переключени телеграфных каналов св зи
CA1263899A (fr) Circuits de synchronisation pour materiel de liaison numerique duplex
GB2168878A (en) Radiocommunication system
US2272412A (en) Multiplex drop channel repeater
JPH05244203A (ja) 接続装置
CA1172342A (fr) Systeme de commutation synchronisee avec dispositif de protection
GB1489178A (en) Digital data signalling systems and apparatus therefor

Legal Events

Date Code Title Description
MKEX Expiry