NL7005535A - - Google Patents
Info
- Publication number
- NL7005535A NL7005535A NL7005535A NL7005535A NL7005535A NL 7005535 A NL7005535 A NL 7005535A NL 7005535 A NL7005535 A NL 7005535A NL 7005535 A NL7005535 A NL 7005535A NL 7005535 A NL7005535 A NL 7005535A
- Authority
- NL
- Netherlands
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
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1919585A DE1919585C3 (de) | 1969-04-17 | 1969-04-17 | Schaltungsanordnung zum Anruf von mit Tonrufempfängern ausgerüsteten Teilnehmerstellen in Fernmelde-, insbesondere Fernsprechvermittlungsanlagen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7005535A true NL7005535A (xx) | 1970-10-20 |
Family
ID=5731506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7005535A NL7005535A (xx) | 1969-04-17 | 1970-04-17 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3651271A (xx) |
| BE (1) | BE749081A (xx) |
| CH (1) | CH514260A (xx) |
| DE (1) | DE1919585C3 (xx) |
| ES (1) | ES378694A1 (xx) |
| FR (1) | FR2043380A5 (xx) |
| GB (1) | GB1254258A (xx) |
| NL (1) | NL7005535A (xx) |
| SE (1) | SE341019B (xx) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3723662A (en) * | 1971-12-09 | 1973-03-27 | Gte Automatic Electric Lab Inc | D.c. compensated subscriber interface transformer circuit for telephone system |
| DE2540973C2 (de) * | 1975-09-13 | 1981-09-17 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Schaltungsanordnung zur Erkennung von Betriebszuständen einer Teilnehmerleitung und zur Rufanschaltung in Fernsprechvermittlungsanlagen |
| DE2547880C2 (de) * | 1975-10-25 | 1981-09-24 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Schaltungsanordnung zur Erkennung von Betriebszuständen einer Teilnehmerleitung und zur Rufanschaltung sowie Rufabschaltung in Fernsprechvermittlungsanlagen |
| US4025727A (en) * | 1976-07-06 | 1977-05-24 | Gte Automatic Electric (Canada) Limited | Balanced tone application system |
| FR2501442B1 (fr) * | 1980-12-29 | 1987-07-17 | Thomson Csf | Procede et dispositif de detection du decrochage d'un combine telephonique |
| US4473719A (en) * | 1982-05-17 | 1984-09-25 | At&T Bell Laboratories | Switchhook status detector |
| AR243308A1 (es) * | 1989-01-27 | 1993-07-30 | Siemens Ag | Disposicion de procesamiento de informaciones. |
| US20060293089A1 (en) * | 2005-06-22 | 2006-12-28 | Magix Ag | System and method for automatic creation of digitally enhanced ringtones for cellphones |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3492437A (en) * | 1966-10-12 | 1970-01-27 | Bell Telephone Labor Inc | Time-shared telephone ringing arrangement |
-
1969
- 1969-04-17 DE DE1919585A patent/DE1919585C3/de not_active Expired
-
1970
- 1970-04-09 US US26940A patent/US3651271A/en not_active Expired - Lifetime
- 1970-04-15 FR FR7013586A patent/FR2043380A5/fr not_active Expired
- 1970-04-15 CH CH557370A patent/CH514260A/de not_active IP Right Cessation
- 1970-04-16 ES ES378694A patent/ES378694A1/es not_active Expired
- 1970-04-17 NL NL7005535A patent/NL7005535A/xx unknown
- 1970-04-17 SE SE05362/70A patent/SE341019B/xx unknown
- 1970-04-17 BE BE749081A patent/BE749081A/nl unknown
- 1970-05-21 GB GB24660/70A patent/GB1254258A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| SE341019B (xx) | 1971-12-13 |
| US3651271A (en) | 1972-03-21 |
| FR2043380A5 (xx) | 1971-02-12 |
| DE1919585C3 (de) | 1974-06-06 |
| GB1254258A (en) | 1971-11-17 |
| DE1919585B2 (de) | 1973-11-15 |
| BE749081A (nl) | 1970-10-19 |
| CH514260A (de) | 1971-10-15 |
| ES378694A1 (es) | 1972-07-16 |
| DE1919585A1 (de) | 1970-11-05 |