BE514276A - - Google Patents
Info
- Publication number
- BE514276A BE514276A BE514276DA BE514276A BE 514276 A BE514276 A BE 514276A BE 514276D A BE514276D A BE 514276DA BE 514276 A BE514276 A BE 514276A
- Authority
- BE
- Belgium
Links
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/738—Interface circuits for coupling substations to external telephone lines
- H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/30—Devices which can set up and transmit only one digit at a time
- H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES25033A DE880152C (de) | 1951-10-03 | 1951-10-03 | Schaltungsanordnung fuer Fernsprechstationen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE514276A true BE514276A (pt) |
Family
ID=7478147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE514276D BE514276A (pt) | 1951-10-03 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE514276A (pt) |
| DE (1) | DE880152C (pt) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1042668B (de) * | 1955-02-17 | 1958-11-06 | Ericsson Telefon Ab L M | Schaltungsanordnung fuer mit Nummernstromstossgebern versehene Fernsprechapparate |
| CH345922A (de) * | 1957-01-03 | 1960-04-30 | Siemens Ag Albis | Telephonteilnehmerstation mit Rückhördämpfung für automatischen Betrieb |
-
0
- BE BE514276D patent/BE514276A/xx unknown
-
1951
- 1951-10-03 DE DES25033A patent/DE880152C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE880152C (de) | 1953-06-18 |