GB1445800A - Data transmission network - Google Patents

Data transmission network

Info

Publication number: GB1445800A
Authority: GB; United Kingdom
Prior art keywords: line; exchange; tron; calling; relay
Prior art date: 1973-05-08
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

GB1833574A

Other languages

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.)

Alcatel CIT SA

Nokia Inc

Original Assignee

Compagnie Industrielle de Telecommunication CIT Alcatel SA

Nokia 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.)

1973-05-08

Filing date

1974-04-26

Publication date

1976-08-11

1974-04-26 Application filed by Compagnie Industrielle de Telecommunication CIT Alcatel SA, Nokia Inc filed Critical Compagnie Industrielle de Telecommunication CIT Alcatel SA

1976-08-11 Publication of GB1445800A publication Critical patent/GB1445800A/en

Status Expired legal-status Critical Current

Classifications

- 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
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Devices For Supply Of Signal Current (AREA)
Telephonic Communication Services (AREA)

GB1833574A 1973-05-08 1974-04-26 Data transmission network Expired GB1445800A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR7316586A FR2229178B1 (fr)	1973-05-08	1973-05-08

Publications (1)

Publication Number	Publication Date
GB1445800A true GB1445800A (en)	1976-08-11

Family

ID=9118979

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB1833574A Expired GB1445800A (en)	1973-05-08	1974-04-26	Data transmission network

Country Status (7)

Country	Link
BE (1)	BE814455A (fr)
CH (1)	CH581935A5 (fr)
DE (1)	DE2420992A1 (fr)
FR (1)	FR2229178B1 (fr)
GB (1)	GB1445800A (fr)
IT (1)	IT1012163B (fr)
NL (1)	NL7406015A (fr)

1973
- 1973-05-08 FR FR7316586A patent/FR2229178B1/fr not_active Expired
1974
- 1974-04-22 CH CH552574A patent/CH581935A5/xx not_active IP Right Cessation
- 1974-04-26 GB GB1833574A patent/GB1445800A/en not_active Expired
- 1974-04-30 DE DE19742420992 patent/DE2420992A1/de not_active Withdrawn
- 1974-05-02 BE BE1005924A patent/BE814455A/fr unknown
- 1974-05-03 NL NL7406015A patent/NL7406015A/xx active Search and Examination
- 1974-05-08 IT IT2244274A patent/IT1012163B/it active

Also Published As

Publication number	Publication date
FR2229178B1 (fr)	1978-12-29
IT1012163B (it)	1977-03-10
NL7406015A (fr)	1974-11-12
BE814455A (fr)	1974-11-04
CH581935A5 (fr)	1976-11-15
FR2229178A1 (fr)	1974-12-06
DE2420992A1 (de)	1974-11-28

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Legal Events

Date	Code	Title	Description
1976-12-22	PS	Patent sealed
1981-01-07	PCNP	Patent ceased through non-payment of renewal fee