SE425537B - Sett och anordning for att kompensera for skillnader i linjeslingimpedanser i ett for tidsfordelningsmultiplex anordnat telefonsystem - Google Patents
Sett och anordning for att kompensera for skillnader i linjeslingimpedanser i ett for tidsfordelningsmultiplex anordnat telefonsystemInfo
- Publication number
- SE425537B SE425537B SE7710346A SE7710346A SE425537B SE 425537 B SE425537 B SE 425537B SE 7710346 A SE7710346 A SE 7710346A SE 7710346 A SE7710346 A SE 7710346A SE 425537 B SE425537 B SE 425537B
- Authority
- SE
- Sweden
- Prior art keywords
- line
- organized
- compensate
- differences
- phone system
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/001—Current supply source at the exchanger providing current to substations
- H04M19/005—Feeding arrangements without the use of line transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB38555/76A GB1584778A (en) | 1976-09-17 | 1976-09-17 | Telecommunication exchanges |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7710346L SE7710346L (sv) | 1978-03-18 |
SE425537B true SE425537B (sv) | 1982-10-04 |
Family
ID=10404250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7710346A SE425537B (sv) | 1976-09-17 | 1977-09-15 | Sett och anordning for att kompensera for skillnader i linjeslingimpedanser i ett for tidsfordelningsmultiplex anordnat telefonsystem |
Country Status (8)
Country | Link |
---|---|
BE (1) | BE858816A (sv) |
CA (1) | CA1089131A (sv) |
DE (1) | DE2741667A1 (sv) |
FR (1) | FR2365252A1 (sv) |
GB (1) | GB1584778A (sv) |
NL (1) | NL7710118A (sv) |
SE (1) | SE425537B (sv) |
ZA (1) | ZA775490B (sv) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4254305A (en) * | 1979-02-07 | 1981-03-03 | International Telephone And Telegraph Corporation | Current limited subscriber line feed circuit |
US4272648A (en) * | 1979-11-28 | 1981-06-09 | International Telephone And Telegraph Corporation | Gain control apparatus for digital telephone line circuits |
DE3902439A1 (de) * | 1989-01-27 | 1990-08-02 | Basf Ag | Pflanzenschuetzende mittel auf basis von 1-aryl- bzw. 1-hetarylimidazolcarbonsaeureestern |
US5274703A (en) * | 1991-05-23 | 1993-12-28 | At&T Bell Laboratories | Automatic loss control circuit |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1299735B (de) * | 1965-08-04 | 1969-07-24 | Siemens Ag | Schaltungsanordnung fuer Fernsprechanlagen, insbesondere Nebenstellenanlagen mit Sprechstellen, die einen selbsttaetigen Daempfungsausgleich aufweisen |
US3781481A (en) * | 1971-09-30 | 1973-12-25 | Stromberg Carlson Corp | Amplifier select and control circuit |
DE2250651B2 (de) * | 1972-10-16 | 1975-06-19 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Schaltungsanordnung für den Dämpfungsausgleich in einer Nebenstellenanlage mit vierdrähtigen Verbindungswegen |
DE2347696C3 (de) * | 1973-09-21 | 1978-12-21 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Schaltungsanordnung zum Speisen von Teilnehmeranschlußleitungen in Fernsprechvermittlungsanlagen |
US3903378A (en) * | 1974-03-27 | 1975-09-02 | Gte Automatic Electric Lab Inc | Arrangement for controlling the gain of two-way amplifiers in accordance with loop lengths |
-
1976
- 1976-09-17 GB GB38555/76A patent/GB1584778A/en not_active Expired
-
1977
- 1977-09-13 ZA ZA00775490A patent/ZA775490B/xx unknown
- 1977-09-15 SE SE7710346A patent/SE425537B/sv not_active IP Right Cessation
- 1977-09-15 NL NL7710118A patent/NL7710118A/xx not_active Application Discontinuation
- 1977-09-16 DE DE19772741667 patent/DE2741667A1/de active Granted
- 1977-09-16 BE BE181006A patent/BE858816A/xx not_active IP Right Cessation
- 1977-09-16 CA CA286,926A patent/CA1089131A/en not_active Expired
- 1977-09-16 FR FR7728078A patent/FR2365252A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
DE2741667A1 (de) | 1978-03-23 |
SE7710346L (sv) | 1978-03-18 |
FR2365252B1 (sv) | 1982-03-26 |
BE858816A (fr) | 1978-01-16 |
GB1584778A (en) | 1981-02-18 |
ZA775490B (en) | 1978-07-26 |
FR2365252A1 (fr) | 1978-04-14 |
NL7710118A (nl) | 1978-03-21 |
CA1089131A (en) | 1980-11-04 |
DE2741667C2 (sv) | 1987-09-24 |
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