IN144483B - - Google Patents
Info
- Publication number
- IN144483B IN144483B IN1122/CAL/1976A IN1122CA1976A IN144483B IN 144483 B IN144483 B IN 144483B IN 1122CA1976 A IN1122CA1976 A IN 1122CA1976A IN 144483 B IN144483 B IN 144483B
- Authority
- IN
- India
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
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 |
|---|---|---|---|
| SE7508728A SE387812B (sv) | 1975-08-01 | 1975-08-01 | Automatiskt telefonsystem forsett med ett skydd mot avbrottsstorningar vid registersignalering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN144483B true IN144483B (https=) | 1978-05-06 |
Family
ID=20325236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN1122/CAL/1976A IN144483B (https=) | 1975-08-01 | 1976-06-23 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE844762A (https=) |
| IN (1) | IN144483B (https=) |
| SE (1) | SE387812B (https=) |
-
1975
- 1975-08-01 SE SE7508728A patent/SE387812B/xx unknown
-
1976
- 1976-06-23 IN IN1122/CAL/1976A patent/IN144483B/en unknown
- 1976-07-30 BE BE169454A patent/BE844762A/fr not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| BE844762A (fr) | 1976-11-16 |
| SE387812B (sv) | 1976-09-13 |