SE375215B - - Google Patents
Info
- Publication number
- SE375215B SE375215B SE7105508A SE550871A SE375215B SE 375215 B SE375215 B SE 375215B SE 7105508 A SE7105508 A SE 7105508A SE 550871 A SE550871 A SE 550871A SE 375215 B SE375215 B SE 375215B
- Authority
- SE
- Sweden
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
- H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
- H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
- H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line
- H04M9/007—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line wherein the key telephone sets are star-connected to a central unit by a limited number of lines
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Exchange Systems With Centralized Control (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Telephonic Communication Services (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3543570A | 1970-05-07 | 1970-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE375215B true SE375215B (de) | 1975-04-07 |
Family
ID=21882663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7105508A SE375215B (de) | 1970-05-07 | 1971-04-28 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3637939A (de) |
| JP (1) | JPS5733745B1 (de) |
| BE (1) | BE766697A (de) |
| CA (1) | CA953399A (de) |
| DE (1) | DE2122737C3 (de) |
| GB (1) | GB1342922A (de) |
| SE (1) | SE375215B (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3764752A (en) * | 1972-01-11 | 1973-10-09 | Teltronics Inc | Telephone line card system |
| US3787631A (en) * | 1972-12-11 | 1974-01-22 | Bell Telephone Labor Inc | Time slot number compensating arrangement |
| CA996691A (en) * | 1974-10-16 | 1976-09-07 | Northern Electric Company Limited | Tow wire, full duplex data transmission system |
| US3914559A (en) * | 1974-11-07 | 1975-10-21 | Bell Telephone Labor Inc | Universal PBX line circuit for key and non-key service |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1537906B2 (de) * | 1967-10-04 | 1970-05-06 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Schaltungsanordnung für die Verarbeitung vorübergehender Schaltmaßnahmen eines Teilnehmers in Fernmeldevermittlungsanlagen mit zeitmultiplexer Steuerung, bei welchen jeder Verbindung zwischen zwei Teilnehmern- jeweils eine Zeile eines zentralen Umlaufspeiehers zugeordnet wird |
| US3519757A (en) * | 1968-02-27 | 1970-07-07 | Bell Telephone Labor Inc | Electronic key telephone system |
-
1970
- 1970-05-07 US US35435A patent/US3637939A/en not_active Expired - Lifetime
-
1971
- 1971-01-21 CA CA103,291A patent/CA953399A/en not_active Expired
- 1971-04-28 SE SE7105508A patent/SE375215B/xx unknown
- 1971-05-04 BE BE766697A patent/BE766697A/xx not_active IP Right Cessation
- 1971-05-07 JP JP2989971A patent/JPS5733745B1/ja active Pending
- 1971-05-07 GB GB1375771*[A patent/GB1342922A/en not_active Expired
- 1971-05-07 DE DE2122737A patent/DE2122737C3/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3637939A (en) | 1972-01-25 |
| JPS5733745B1 (de) | 1982-07-19 |
| GB1342922A (en) | 1974-01-10 |
| BE766697A (fr) | 1971-10-01 |
| DE2122737C3 (de) | 1981-03-19 |
| DE2122737B2 (de) | 1980-06-12 |
| DE2122737A1 (de) | 1971-11-25 |
| CA953399A (en) | 1974-08-20 |