BE460564A - - Google Patents
Info
- Publication number
- BE460564A BE460564A BE460564DA BE460564A BE 460564 A BE460564 A BE 460564A BE 460564D A BE460564D A BE 460564DA BE 460564 A BE460564 A BE 460564A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/14—Arrangements providing for calling or supervisory signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/16—Arrangements for interconnection between switching centres in systems employing carrier frequencies
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- 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
- H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
- H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Transmitters (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR895971T | 1943-03-08 | ||
| FR54361T | 1943-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE460564A true BE460564A (nl) |
Family
ID=32963915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE460564D BE460564A (nl) | 1943-03-08 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE460564A (nl) |
| CH (1) | CH276933A (nl) |
| FR (1) | FR54361E (nl) |
| GB (1) | GB635481A (nl) |
-
0
- BE BE460564D patent/BE460564A/xx unknown
-
1943
- 1943-12-04 FR FR54361D patent/FR54361E/fr not_active Expired
-
1945
- 1945-09-24 CH CH276933D patent/CH276933A/fr unknown
-
1946
- 1946-04-04 GB GB1047846A patent/GB635481A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB635481A (en) | 1950-04-12 |
| CH276933A (fr) | 1951-07-31 |
| FR54361E (fr) | 1950-03-10 |