GB8310668D0 - Intercommunication system - Google Patents

Intercommunication system

Info

Publication number
GB8310668D0
GB8310668D0 GB838310668A GB8310668A GB8310668D0 GB 8310668 D0 GB8310668 D0 GB 8310668D0 GB 838310668 A GB838310668 A GB 838310668A GB 8310668 A GB8310668 A GB 8310668A GB 8310668 D0 GB8310668 D0 GB 8310668D0
Authority
GB
United Kingdom
Prior art keywords
intercommunication system
intercommunication
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.)
Withdrawn
Application number
GB838310668A
Other versions
GB2120046A (en
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB8310668D0 publication Critical patent/GB8310668D0/en
Publication of GB2120046A publication Critical patent/GB2120046A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties
    • H04M9/022—Multiplex systems
    • H04M9/027—Frequency division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5437—Wired telephone
GB08310668A 1982-04-22 1983-04-20 Intercommunication system Withdrawn GB2120046A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37078582A 1982-04-22 1982-04-22

Publications (2)

Publication Number Publication Date
GB8310668D0 true GB8310668D0 (en) 1983-05-25
GB2120046A GB2120046A (en) 1983-11-23

Family

ID=23461168

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08310668A Withdrawn GB2120046A (en) 1982-04-22 1983-04-20 Intercommunication system

Country Status (3)

Country Link
EP (1) EP0106883A1 (en)
GB (1) GB2120046A (en)
WO (1) WO1983003939A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3515663A1 (en) * 1985-05-02 1986-11-06 Rafi Gmbh & Co Elektrotechnische Spezialfabrik, 7981 Berg METHOD FOR TRANSMITTING INFORMATION ABOUT ELECTRICAL ENERGY SUPPLY NETWORKS
GB8700458D0 (en) * 1987-01-09 1987-02-11 Unvala Ltd Communications systems
DE4241512A1 (en) * 1992-12-10 1994-06-16 Zumtobel Ag Dornbirn Method of transmitting information over a power line
CN1053544C (en) * 1996-08-13 2000-06-14 马绍庸 Coincidence quasi duplex centre-less frequency division multiple address and noise-resistance carrier communication system
US8155592B2 (en) 2008-04-11 2012-04-10 Robert Bosch Gmbh Method for transmitting low-frequency data in a wireless intercom system
DE102008039793A1 (en) * 2008-08-26 2010-03-04 Siemens Aktiengesellschaft Method for clock synchronization in a communication network and communication network

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB309999A (en) * 1928-04-19 1930-06-19 Karl Willy Wagner An improved method of duplex signalling by means of carrier waves
GB402316A (en) * 1932-04-05 1933-11-30 Lorenz C Ag Improvements in or relating to high frequency transmitting systems
US2264396A (en) * 1940-10-22 1941-12-02 Bell Telephone Labor Inc Power line carrier frequency telephone system
US2501820A (en) * 1948-04-29 1950-03-28 Rca Corp Intercommunication system
DE2364043C2 (en) * 1973-01-19 1984-01-05 Sharp K.K., Osaka Home transmission system
US4188582A (en) * 1978-04-10 1980-02-12 Motorola, Inc. Simulcast transmission system having phase-locked remote transmitters

Also Published As

Publication number Publication date
GB2120046A (en) 1983-11-23
WO1983003939A1 (en) 1983-11-10
EP0106883A1 (en) 1984-05-02

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)