SE380156B - - Google Patents
Info
- Publication number
- SE380156B SE380156B SE981771A SE981771A SE380156B SE 380156 B SE380156 B SE 380156B SE 981771 A SE981771 A SE 981771A SE 981771 A SE981771 A SE 981771A SE 380156 B SE380156 B SE 380156B
- Authority
- SE
- Sweden
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
- H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
- G01R19/155—Indicating the presence of voltage
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
- H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
- H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
- H04M3/302—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs
- H04M3/303—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs and using PCM multiplexers, e.g. pair gain systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/02—Selecting arrangements for multiplex systems for frequency-division multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/24—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702038218 DE2038218B2 (en) | 1970-07-31 | 1970-07-31 | DEVICE FOR SUBSCRIBER CONNECTION FUNCTION CONTROL TESTING AND MEASUREMENT IN A SUBSCRIBER CONNECTION MULTIPLEX ARRANGEMENT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE380156B true SE380156B (en) | 1975-10-27 |
Family
ID=5778575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE981771A SE380156B (en) | 1970-07-31 | 1971-07-30 |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5141488B1 (en) |
| BE (1) | BE770678A (en) |
| CH (1) | CH535519A (en) |
| DE (1) | DE2038218B2 (en) |
| GB (1) | GB1329955A (en) |
| NL (2) | NL150295B (en) |
| SE (1) | SE380156B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3215680A1 (en) * | 1982-04-27 | 1983-10-27 | Siemens AG, 1000 Berlin und 8000 München | Method for testing a subscriber connection circuit and its connected analog subscriber station and subscriber connection line, and circuit arrangement to carry out the method |
| DE3215670A1 (en) * | 1982-04-27 | 1983-10-27 | Siemens AG, 1000 Berlin und 8000 München | Subscriber connection circuit with test connections |
| DE3633057C2 (en) * | 1986-09-29 | 1994-01-20 | Kommunikations Elektronik | Circuit arrangement for the transmission of information technology signals |
-
1970
- 1970-07-31 DE DE19702038218 patent/DE2038218B2/en not_active Withdrawn
-
1971
- 1971-07-02 CH CH975671A patent/CH535519A/en not_active IP Right Cessation
- 1971-07-28 JP JP5669571A patent/JPS5141488B1/ja active Pending
- 1971-07-29 BE BE770678A patent/BE770678A/en unknown
- 1971-07-29 GB GB3570471A patent/GB1329955A/en not_active Expired
- 1971-07-30 SE SE981771A patent/SE380156B/xx unknown
- 1971-07-30 NL NL7110582A patent/NL150295B/en unknown
-
1976
- 1976-02-05 NL NL7601193A patent/NL7601193A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE770678A (en) | 1971-12-01 |
| DE2038218B2 (en) | 1972-03-09 |
| GB1329955A (en) | 1973-09-12 |
| NL150295B (en) | 1976-07-15 |
| CH535519A (en) | 1973-03-31 |
| DE2038218A1 (en) | 1972-03-09 |
| NL7601193A (en) | 1976-05-31 |
| NL7110582A (en) | 1972-02-02 |
| JPS5141488B1 (en) | 1976-11-10 |