SE317718B - - Google Patents
Info
- Publication number
- SE317718B SE317718B SE7177/65A SE717765A SE317718B SE 317718 B SE317718 B SE 317718B SE 7177/65 A SE7177/65 A SE 7177/65A SE 717765 A SE717765 A SE 717765A SE 317718 B SE317718 B SE 317718B
- Authority
- SE
- Sweden
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/08—Indicating faults in circuits or apparatus
- H04M3/12—Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits ; Using redundant circuits; Response of a circuit, apparatus or system to an error
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/08—Indicating faults in circuits or apparatus
- H04M3/14—Signalling existence of persistent "off-hook" condition
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Measurement Of Unknown Time Intervals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST22284A DE1218541B (de) | 1964-06-20 | 1964-06-20 | Verfahren und Schaltungsanordnung zur zentralen UEberwachung von Zeitmesskreisen mehrerer Funktionseinheiten in Fernmelde-, insbesondere Fernsprechvermittlungsanlagen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE317718B true SE317718B (da) | 1969-11-24 |
Family
ID=7459302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7177/65A SE317718B (da) | 1964-06-20 | 1965-06-02 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3400228A (da) |
| AT (1) | AT262387B (da) |
| CH (1) | CH423900A (da) |
| DE (1) | DE1218541B (da) |
| DK (1) | DK115191B (da) |
| GB (1) | GB1068002A (da) |
| NL (1) | NL6507826A (da) |
| SE (1) | SE317718B (da) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3793490A (en) * | 1972-12-18 | 1974-02-19 | E Karras | Dial tone delay monitor and recorder |
| US3851311A (en) * | 1973-09-17 | 1974-11-26 | Gte Automatic Electric Lab Inc | Arrangement and method for protecting a common highway from false signals |
| IT1032527B (it) * | 1974-08-29 | 1979-06-20 | Cselt Centro Studi Lab Telecom | Riconoscitore di organi associati in un collegamento attraverso centrali di commutazione ad esempio telefoniche |
| DE2445197C2 (de) * | 1974-09-21 | 1985-02-21 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Laufzeitketten-Impulsmodulator, insbesondere für Radarsender |
| US4041253A (en) * | 1975-10-23 | 1977-08-09 | Stromberg-Carlson Corporation | Bus monitor circuit for detecting malfunction of telephone circuits connected in groups to a common bus |
| US4451702A (en) * | 1977-12-27 | 1984-05-29 | Stromberg-Carlson Corporation | Arrangement of interactive telephone switching processors for performing timing analyses of port events |
| US4278849A (en) * | 1979-11-19 | 1981-07-14 | Bell Telephone Laboratories, Incorporated | Test arrangement for automatic number identification systems |
-
1964
- 1964-06-20 DE DEST22284A patent/DE1218541B/de active Pending
-
1965
- 1965-03-09 AT AT206565A patent/AT262387B/de active
- 1965-06-02 SE SE7177/65A patent/SE317718B/xx unknown
- 1965-06-07 US US461813A patent/US3400228A/en not_active Expired - Lifetime
- 1965-06-12 DK DK296165AA patent/DK115191B/da unknown
- 1965-06-16 CH CH840965A patent/CH423900A/de unknown
- 1965-06-18 GB GB25865/65A patent/GB1068002A/en not_active Expired
- 1965-06-18 NL NL6507826A patent/NL6507826A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1218541B (de) | 1966-06-08 |
| AT262387B (de) | 1968-06-10 |
| DK115191B (da) | 1969-09-15 |
| NL6507826A (da) | 1965-12-21 |
| GB1068002A (en) | 1967-05-10 |
| US3400228A (en) | 1968-09-03 |
| CH423900A (de) | 1966-11-15 |