BE621095A - - Google Patents
Info
- Publication number
- BE621095A BE621095A BE621095DA BE621095A BE 621095 A BE621095 A BE 621095A BE 621095D A BE621095D A BE 621095DA BE 621095 A BE621095 A BE 621095A
- Authority
- BE
- Belgium
Links
Classifications
-
- 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
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES75183A DE1139552B (de) | 1961-08-04 | 1961-08-04 | Mehrkanaluebertragungssystem mit Einzelkanalueberwachung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE621095A true BE621095A (US06521211-20030218-C00004.png) |
Family
ID=7505194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE621095D BE621095A (US06521211-20030218-C00004.png) | 1961-08-04 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE621095A (US06521211-20030218-C00004.png) |
| DE (1) | DE1139552B (US06521211-20030218-C00004.png) |
| SE (1) | SE314711B (US06521211-20030218-C00004.png) |
-
0
- BE BE621095D patent/BE621095A/xx unknown
-
1961
- 1961-08-04 DE DES75183A patent/DE1139552B/de active Pending
-
1962
- 1962-08-01 SE SE847162A patent/SE314711B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1139552B (de) | 1962-11-15 |
| SE314711B (US06521211-20030218-C00004.png) | 1969-09-15 |
