BE464665A - - Google Patents
Info
- Publication number
- BE464665A BE464665A BE464665DA BE464665A BE 464665 A BE464665 A BE 464665A BE 464665D A BE464665D A BE 464665DA BE 464665 A BE464665 A BE 464665A
- Authority
- BE
- Belgium
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
- H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE610790X | 1945-04-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE464665A true BE464665A (mo) |
Family
ID=20313046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE464665D BE464665A (mo) | 1945-04-19 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE464665A (mo) |
| GB (1) | GB610790A (mo) |
-
0
- BE BE464665D patent/BE464665A/xx unknown
-
1946
- 1946-04-16 GB GB11724/46A patent/GB610790A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB610790A (en) | 1948-10-20 |