BE660747A - - Google Patents
Info
- Publication number
- BE660747A BE660747A BE660747DA BE660747A BE 660747 A BE660747 A BE 660747A BE 660747D A BE660747D A BE 660747DA BE 660747 A BE660747 A BE 660747A
- 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)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST21796A DE1211286B (de) | 1964-03-06 | 1964-03-06 | Mehrfrequenz-Code-Zwangslaufsignalverfahren mit Durchsignalisierung fuer Fernmelde-, insbesondere Fernsprechanlagen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE660747A true BE660747A (en:Method) | 1965-09-08 |
Family
ID=7459132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE660747D BE660747A (en:Method) | 1964-03-06 | 1965-03-08 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3441676A (en:Method) |
| BE (1) | BE660747A (en:Method) |
| CH (1) | CH430807A (en:Method) |
| DE (1) | DE1211286B (en:Method) |
| FR (1) | FR87485E (en:Method) |
| GB (1) | GB1030188A (en:Method) |
| NL (1) | NL6502951A (en:Method) |
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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE482466A (en:Method) * | 1947-04-29 | |||
| BE624321A (en:Method) * | 1961-11-01 |
-
1964
- 1964-03-06 DE DEST21796A patent/DE1211286B/de active Pending
-
1965
- 1965-02-24 US US434906A patent/US3441676A/en not_active Expired - Lifetime
- 1965-03-03 CH CH294165A patent/CH430807A/de unknown
- 1965-03-05 FR FR8136A patent/FR87485E/fr not_active Expired
- 1965-03-05 GB GB9446/65A patent/GB1030188A/en not_active Expired
- 1965-03-08 NL NL6502951A patent/NL6502951A/xx unknown
- 1965-03-08 BE BE660747D patent/BE660747A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR87485E (fr) | 1966-05-06 |
| CH430807A (de) | 1967-02-28 |
| GB1030188A (en) | 1966-05-18 |
| NL6502951A (en:Method) | 1965-09-07 |
| US3441676A (en) | 1969-04-29 |
| DE1211286B (de) | 1966-02-24 |