FR2171594A5 - - Google Patents
Info
- Publication number
- FR2171594A5 FR2171594A5 FR7204108A FR7204108A FR2171594A5 FR 2171594 A5 FR2171594 A5 FR 2171594A5 FR 7204108 A FR7204108 A FR 7204108A FR 7204108 A FR7204108 A FR 7204108A FR 2171594 A5 FR2171594 A5 FR 2171594A5
- Authority
- FR
- France
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/026—Arrangements for interrupting the ringing current
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7204108A FR2171594A5 (en) | 1972-02-08 | 1972-02-08 | |
GB507973A GB1386193A (en) | 1972-02-08 | 1973-02-01 | Ringing trip circuit |
DE19732305594 DE2305594B2 (en) | 1972-02-08 | 1973-02-05 | CIRCUIT ARRANGEMENT FOR CALL DISABLING IN TELEPHONE SWITCHING SYSTEMS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7204108A FR2171594A5 (en) | 1972-02-08 | 1972-02-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2171594A5 true FR2171594A5 (en) | 1973-09-21 |
Family
ID=9093144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7204108A Expired FR2171594A5 (en) | 1972-02-08 | 1972-02-08 |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE2305594B2 (en) |
FR (1) | FR2171594A5 (en) |
GB (1) | GB1386193A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE7512060L (en) * | 1974-11-07 | 1976-05-10 | Western Electric Co | DEVICE FOR PATRICATING AND DETECTING RING SIGNALS OVER A CALLED LINE IN A TELECOMMUNICATION SYSTEM |
DE3001497C2 (en) * | 1980-01-17 | 1981-11-26 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Circuit arrangement for recognizing the subscriber message in telephone switching systems |
US4447675A (en) * | 1982-10-29 | 1984-05-08 | Bell Telephone Laboratories, Incorporated | Ring-trip detector |
-
1972
- 1972-02-08 FR FR7204108A patent/FR2171594A5/fr not_active Expired
-
1973
- 1973-02-01 GB GB507973A patent/GB1386193A/en not_active Expired
- 1973-02-05 DE DE19732305594 patent/DE2305594B2/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE2305594B2 (en) | 1976-10-21 |
GB1386193A (en) | 1975-03-05 |
DE2305594A1 (en) | 1973-08-16 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |