BE830399A - Circuit de commande de sonnerie d'appel - Google Patents
Circuit de commande de sonnerie d'appelInfo
- Publication number
- BE830399A BE830399A BE2054411A BE2054411A BE830399A BE 830399 A BE830399 A BE 830399A BE 2054411 A BE2054411 A BE 2054411A BE 2054411 A BE2054411 A BE 2054411A BE 830399 A BE830399 A BE 830399A
- Authority
- BE
- Belgium
- Prior art keywords
- control circuit
- call bell
- bell control
- call
- circuit
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US481507A US3919488A (en) | 1974-06-21 | 1974-06-21 | Ring control circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
BE830399A true BE830399A (fr) | 1975-12-19 |
Family
ID=23912195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE2054411A BE830399A (fr) | 1974-06-21 | 1975-06-19 | Circuit de commande de sonnerie d'appel |
Country Status (2)
Country | Link |
---|---|
US (1) | US3919488A (fr) |
BE (1) | BE830399A (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4031332A (en) * | 1976-02-02 | 1977-06-21 | Cook Electric Company | Telephone ringer insolator |
US5694465A (en) * | 1995-03-16 | 1997-12-02 | Advanced Micro Devices, Inc. | Integrated ringer for short telephone lines |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3045150A (en) * | 1958-10-13 | 1962-07-17 | Leach Corp | Time delay circuit |
US3131318A (en) * | 1962-10-03 | 1964-04-28 | Paul O Snyder | Time controlled power circuit |
US3445603A (en) * | 1966-05-11 | 1969-05-20 | Bell Telephone Labor Inc | Arrangement for tripping ringing in intercept circuit |
US3551754A (en) * | 1968-11-04 | 1970-12-29 | Stromberg Carlson Corp | Sensitive pick-up relay |
-
1974
- 1974-06-21 US US481507A patent/US3919488A/en not_active Expired - Lifetime
-
1975
- 1975-06-19 BE BE2054411A patent/BE830399A/fr unknown
Also Published As
Publication number | Publication date |
---|---|
US3919488A (en) | 1975-11-11 |
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