ZA783790B - Line monitoring for communications systems - Google Patents

Line monitoring for communications systems

Info

Publication number: ZA783790B
Authority: ZA; South Africa
Prior art keywords: line monitoring; communications systems; communications; systems; monitoring
Prior art date: 1977-07-18

Application number

ZA00783790A

Other languages

English (en)

Inventor

A Fruth

J Harenberg

Original Assignee

Siemens Ag

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.)

1977-07-18

Filing date

1978-07-03

Publication date

1979-07-25

1978-07-03 Application filed by Siemens Ag filed Critical Siemens Ag

1979-07-25 Publication of ZA783790B publication Critical patent/ZA783790B/xx

Links

238000012544 monitoring process Methods 0.000 title 1

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Data Exchanges In Wide-Area Networks (AREA)

ZA00783790A 1977-07-18 1978-07-03 Line monitoring for communications systems ZA783790B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE2732392A DE2732392C3 (de)	1977-07-18	1977-07-18	Schaltungsanordnung zur zeitabhängigen Überwachung des Zustandes von Leitungen

Publications (1)

Publication Number	Publication Date
ZA783790B true ZA783790B (en)	1979-07-25

Family

ID=6014193

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ZA00783790A ZA783790B (en)	1977-07-18	1978-07-03	Line monitoring for communications systems

Country Status (11)

Country	Link
US (1)	US4176256A (it)
AT (1)	AT373752B (it)
AU (1)	AU516519B2 (it)
BE (1)	BE869072A (it)
BR (1)	BR7804603A (it)
CH (1)	CH631303A5 (it)
DE (1)	DE2732392C3 (it)
IT (1)	IT1097171B (it)
NL (1)	NL7807634A (it)
SE (1)	SE427406B (it)
ZA (1)	ZA783790B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4320505A (en) *	1979-07-23	1982-03-16	Bell Telephone Laboratories, Incorporated	Processing apparatus for data rate reduction
DE3214576C2 (de) *	1982-04-20	1986-09-11	Siemens AG, 1000 Berlin und 8000 München	Schaltungsanordnung zum Ermitteln von Dauerlagesignalen auf Anschlußleitungen einer Vermittlungsanlage
AU572593B2 (en) *	1983-12-22	1988-05-12	Alcatel N.V.	Signal recognition system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3800094A (en) *	1971-03-17	1974-03-26	Telefonbau & Normalzeit Gmbh	Centrally controlled telephone system having means for sensing and evaluating changes of the states of loops
DE2321124C2 (de) *	1973-04-26	1974-10-31	Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt	Einrichtung zum Erfassen und Bearbeiten von Daten, beispielsweise von Leitungsbelegungszeiten in Fernmeldevermittlungsanlagen
US3894191A (en) *	1974-08-21	1975-07-08	Bell Telephone Labor Inc	Scanner employing sequentially accessible memory
SE379473B (it) *	1974-10-17	1975-10-06	Ericsson Telefon Ab L M
DE2522089C2 (de) *	1975-05-17	1983-12-08	Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt	Schaltungsanordnung zum Erkennen und Auswerten von Schleifenzustandsänderungen von Teilnehmeranschlußleitungen in zentral gesteuerten Fernsprechanlagen

1977
- 1977-07-18 DE DE2732392A patent/DE2732392C3/de not_active Expired
1978
- 1978-06-28 CH CH702178A patent/CH631303A5/de not_active IP Right Cessation
- 1978-06-28 US US05/919,824 patent/US4176256A/en not_active Expired - Lifetime
- 1978-07-03 ZA ZA00783790A patent/ZA783790B/xx unknown
- 1978-07-04 AU AU37748/78A patent/AU516519B2/en not_active Expired
- 1978-07-04 SE SE7807534A patent/SE427406B/sv unknown
- 1978-07-17 NL NL7807634A patent/NL7807634A/xx not_active Application Discontinuation
- 1978-07-17 IT IT25753/78A patent/IT1097171B/it active
- 1978-07-17 BR BR7804603A patent/BR7804603A/pt unknown
- 1978-07-17 AT AT0517078A patent/AT373752B/de not_active IP Right Cessation
- 1978-07-18 BE BE189338A patent/BE869072A/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
DE2732392C3 (de)	1985-01-24
IT7825753A0 (it)	1978-07-17
IT1097171B (it)	1985-08-26
AU3774878A (en)	1980-01-10
AU516519B2 (en)	1981-06-04
US4176256A (en)	1979-11-27
SE7807534L (sv)	1979-01-19
BR7804603A (pt)	1979-04-17
DE2732392B2 (de)	1980-10-16
AT373752B (de)	1984-02-27
DE2732392A1 (de)	1979-02-01
NL7807634A (nl)	1979-01-22
ATA517078A (de)	1983-06-15
SE427406B (sv)	1983-03-28
CH631303A5 (de)	1982-07-30
BE869072A (fr)	1979-01-18

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