BE571163A - - Google Patents

Info

Publication number: BE571163A
Authority: BE; Belgium

Application number

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.)

1957-09-14

Publication of BE571163A publication Critical patent/BE571163A/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Interface Circuits In Exchanges (AREA)

BE571163D 1957-09-14 BE571163A (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL835534X		1957-09-14

Publications (1)

Publication Number	Publication Date
BE571163A true BE571163A (sv)

Family

ID=19843126

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE571163D BE571163A (sv)	1957-09-14

Country Status (5)

Country	Link
US (1)	US3042816A (sv)
BE (1)	BE571163A (sv)
DE (1)	DE1067873B (sv)
FR (1)	FR1203287A (sv)
GB (1)	GB835534A (sv)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE632293A (sv) *	1961-03-03
DE1157665B (de) *	1962-04-04	1963-11-21	Telefunken Patent	Schaltungsanordnung zur Pruefung des Belegungszustandes von Teilnehmerleitungen in Fernmelde-, insbesondere Fernsprechanlagen
DE1263865B (de) *	1966-03-24	1968-03-21	Telefunken Patent	Schaltungsanordnung zur Speisung von Fernmeldeleitungen, insbesondere von Fernsprechteilnehmerleitungen
US3851108A (en) *	1972-12-20	1974-11-26	Bell Lab Inc	Communication line supervisory circuit
US4099032A (en) *	1977-03-25	1978-07-04	Wescom, Inc.	Loop current detector
US4197431A (en) *	1978-10-02	1980-04-08	Digital Telephone Systems, Inc.	Subscriber loop feed apparatus
US4524246A (en) *	1982-07-07	1985-06-18	Harris Corporation	SLIC II--common-mode current rejection
US5333192A (en) *	1990-06-26	1994-07-26	Northern Telecom Limited	Line interface circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2676210A (en) *	1948-08-11	1954-04-20	Hartford Nat Bank & Trust Co	Potential comparing selector circuit
NL106485C (sv) *	1955-11-03

0
- BE BE571163D patent/BE571163A/xx unknown
1958
- 1958-09-11 GB GB29140/58A patent/GB835534A/en not_active Expired
- 1958-09-11 DE DEN15575A patent/DE1067873B/de active Pending
- 1958-09-12 FR FR1203287D patent/FR1203287A/fr not_active Expired
- 1958-09-15 US US761220A patent/US3042816A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
US3042816A (en)	1962-07-03
DE1067873B (de)	1959-10-29
FR1203287A (fr)	1960-01-18
GB835534A (en)	1960-05-25

Publication	Publication Date	Title
AT218824B (sv)	1961-12-27
AT215742B (sv)	1961-06-26
AT213752B (sv)	1961-02-27
BE565128A (sv)
BE562387A (sv)
BE560755A (sv)
BE560387A (sv)	1957-09-14
BE574000A (sv)
BE558042A (sv)
BE555512A (sv)
BE572338A (sv)
BE553769A (sv)
BE572020A (sv)
BE570394A (sv)	1958-09-15
BE570383A (sv)
BE569444A (sv)
BE567638A (sv)
BE567590A (sv)
BE561666A (sv)
BE562757A (sv)
BE562985A (sv)
BE563239A (sv)
BE563653A (sv)
BE563817A (sv)
BE564007A (sv)