BE743320A - - Google Patents
Info
- Publication number
- BE743320A BE743320A BE743320DA BE743320A BE 743320 A BE743320 A BE 743320A BE 743320D A BE743320D A BE 743320DA BE 743320 A BE743320 A BE 743320A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Electronic Switches (AREA)
- Interface Circuits In Exchanges (AREA)
- Dc Digital Transmission (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Communication Control (AREA)
- Selective Calling Equipment (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR183136 | 1968-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE743320A true BE743320A (en:Method) | 1970-06-18 |
Family
ID=8659954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE743320D BE743320A (en:Method) | 1968-12-31 | 1969-12-18 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3668314A (en:Method) |
| JP (1) | JPS537761B1 (en:Method) |
| BE (1) | BE743320A (en:Method) |
| CH (1) | CH506922A (en:Method) |
| DE (1) | DE1965656C3 (en:Method) |
| FR (1) | FR1605049A (en:Method) |
| GB (1) | GB1279329A (en:Method) |
| NL (1) | NL160455C (en:Method) |
| SE (1) | SE363452B (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2134747A5 (en:Method) * | 1971-04-19 | 1972-12-08 | Cit Alcatel | |
| BE793396A (fr) * | 1972-01-24 | 1973-06-28 | Siemens Ag | Montage de surveillance de liaison |
| JPH0258687U (en:Method) * | 1988-10-20 | 1990-04-26 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3317668A (en) * | 1963-08-15 | 1967-05-02 | Teletype Corp | Open line and busy line detection circuit |
-
1968
- 1968-12-31 FR FR183136A patent/FR1605049A/fr not_active Expired
-
1969
- 1969-12-18 BE BE743320D patent/BE743320A/xx unknown
- 1969-12-19 GB GB62107/69A patent/GB1279329A/en not_active Expired
- 1969-12-19 SE SE17606/69A patent/SE363452B/xx unknown
- 1969-12-22 CH CH1908469A patent/CH506922A/fr not_active IP Right Cessation
- 1969-12-30 NL NL6919540.A patent/NL160455C/xx not_active IP Right Cessation
- 1969-12-31 DE DE1965656A patent/DE1965656C3/de not_active Expired
- 1969-12-31 US US889359A patent/US3668314A/en not_active Expired - Lifetime
-
1970
- 1970-01-05 JP JP195870A patent/JPS537761B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NL160455C (nl) | 1979-10-15 |
| JPS537761B1 (en:Method) | 1978-03-22 |
| DE1965656C3 (de) | 1979-04-12 |
| CH506922A (fr) | 1971-04-30 |
| GB1279329A (en) | 1972-06-28 |
| SE363452B (en:Method) | 1974-01-14 |
| FR1605049A (en:Method) | 1972-08-28 |
| DE1965656B2 (de) | 1978-08-10 |
| NL6919540A (en:Method) | 1970-07-02 |
| DE1965656A1 (de) | 1970-07-23 |
| US3668314A (en) | 1972-06-06 |
| NL160455B (nl) | 1979-05-15 |