BE635147A - - Google Patents
Info
- Publication number
- BE635147A BE635147A BE635147DA BE635147A BE 635147 A BE635147 A BE 635147A BE 635147D A BE635147D A BE 635147DA BE 635147 A BE635147 A BE 635147A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Function (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST19507A DE1171018B (de) | 1962-07-21 | 1962-07-21 | Schaltungsanordnung fuer Handfernsprecher mit umschaltbarem Transistorverstaerker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE635147A true BE635147A (es) |
Family
ID=7458227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE635147D BE635147A (es) | 1962-07-21 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE635147A (es) |
| DE (1) | DE1171018B (es) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2548159C2 (de) * | 1975-10-28 | 1983-05-11 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Schaltungsanordnung für den akustischen Ruf in einer Chef- und Sekretärfernsprechanlage |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1108274B (de) * | 1959-11-06 | 1961-06-08 | Standard Elektrik Lorenz Ag | Schaltungsanordnung fuer Handfernsprecher mit eingebautem Transistorverstaerker |
| DE1129542B (de) * | 1961-03-15 | 1962-05-17 | Standard Elektrik Lorenz Ag | Schaltungsanordnung fuer Handfernsprecher mit elektronischer Rufeinrichtung und mit Sprech- und Ruftaste |
-
0
- BE BE635147D patent/BE635147A/xx unknown
-
1962
- 1962-07-21 DE DEST19507A patent/DE1171018B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1171018B (de) | 1964-05-27 |