BE701598A - - Google Patents
Info
- Publication number
- BE701598A BE701598A BE701598DA BE701598A BE 701598 A BE701598 A BE 701598A BE 701598D A BE701598D A BE 701598DA BE 701598 A BE701598 A BE 701598A
- 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)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST025673 | 1966-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE701598A true BE701598A (xx) | 1968-01-22 |
Family
ID=7460650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE701598D BE701598A (xx) | 1966-07-21 | 1967-07-20 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE701598A (xx) |
| DE (1) | DE1487986A1 (xx) |
| GB (1) | GB1138259A (xx) |
| NL (1) | NL6710050A (xx) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2087710A5 (xx) * | 1970-05-28 | 1971-12-31 | Cit Alcatel |
-
1966
- 1966-07-21 DE DE19661487986 patent/DE1487986A1/de active Pending
-
1967
- 1967-07-14 GB GB3246567A patent/GB1138259A/en not_active Expired
- 1967-07-20 NL NL6710050A patent/NL6710050A/xx unknown
- 1967-07-20 BE BE701598D patent/BE701598A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1138259A (en) | 1968-12-27 |
| DE1487986A1 (de) | 1969-02-20 |
| NL6710050A (xx) | 1968-01-22 |