BE663295A - - Google Patents
Info
- Publication number
- BE663295A BE663295A BE663295DA BE663295A BE 663295 A BE663295 A BE 663295A BE 663295D A BE663295D A BE 663295DA BE 663295 A BE663295 A BE 663295A
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES90866A DE1194458B (de) | 1964-04-30 | 1964-04-30 | Schaltungsanordnung zur UEbermittlung von Kennzeichen ueber Zweidrahtleitungen in Fernmelde-, insbesondere Fernsprechanlagen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE663295A true BE663295A (en, 2012) | 1965-11-03 |
Family
ID=7516130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE663295D BE663295A (en, 2012) | 1964-04-30 | 1965-04-30 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE663295A (en, 2012) |
| DE (1) | DE1194458B (en, 2012) |
| NL (1) | NL6503915A (en, 2012) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2714417C2 (de) * | 1977-03-31 | 1986-01-30 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung zur Übertragung von Signalen in beiden Richtungen über Signalleitungen in Fernmelde-, insbesondere Fernsprechanlagen |
-
1964
- 1964-04-30 DE DES90866A patent/DE1194458B/de active Pending
-
1965
- 1965-03-26 NL NL6503915A patent/NL6503915A/xx unknown
- 1965-04-30 BE BE663295D patent/BE663295A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1194458B (de) | 1965-06-10 |
| NL6503915A (en, 2012) | 1965-11-01 |