BE646659A - - Google Patents
Info
- Publication number
- BE646659A BE646659A BE646659DA BE646659A BE 646659 A BE646659 A BE 646659A BE 646659D A BE646659D A BE 646659DA BE 646659 A BE646659 A BE 646659A
- 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
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST19715A DE1171475B (de) | 1962-09-14 | 1962-09-14 | Zwangslauf-Signalverfahren mit Mehrfrequenz-Codezeichen fuer Fernmelde-, insbesondere Fernsprechanlagen |
| NL6403559A NL6403559A (en:Method) | 1962-09-14 | 1964-04-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE646659A true BE646659A (en:Method) | 1964-10-19 |
Family
ID=25994121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE646659D BE646659A (en:Method) | 1962-09-14 | 1964-04-17 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE646659A (en:Method) |
| NL (1) | NL6403559A (en:Method) |
-
1964
- 1964-04-03 NL NL6403559A patent/NL6403559A/xx unknown
- 1964-04-17 BE BE646659D patent/BE646659A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL6403559A (en:Method) | 1965-10-04 |