IT1134726B - Interfaccia per linea d'abbonato telefonico - Google Patents
Interfaccia per linea d'abbonato telefonicoInfo
- Publication number
- IT1134726B IT1134726B IT26650/80A IT2665080A IT1134726B IT 1134726 B IT1134726 B IT 1134726B IT 26650/80 A IT26650/80 A IT 26650/80A IT 2665080 A IT2665080 A IT 2665080A IT 1134726 B IT1134726 B IT 1134726B
- Authority
- IT
- Italy
- Prior art keywords
- interface
- telephone subscription
- subscription line
- line
- telephone
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7943074A GB2066023B (en) | 1979-12-13 | 1979-12-13 | Telephone line interface |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8026650A0 IT8026650A0 (it) | 1980-12-15 |
IT1134726B true IT1134726B (it) | 1986-08-13 |
Family
ID=10509838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT26650/80A IT1134726B (it) | 1979-12-13 | 1980-12-15 | Interfaccia per linea d'abbonato telefonico |
Country Status (15)
Country | Link |
---|---|
US (1) | US4345115A (it) |
JP (1) | JPS56111394A (it) |
AU (1) | AU541812B2 (it) |
BE (1) | BE890404R (it) |
CH (1) | CH651986A5 (it) |
DE (1) | DE3043906A1 (it) |
EG (1) | EG13942A (it) |
FR (1) | FR2472320A1 (it) |
GB (1) | GB2066023B (it) |
IE (1) | IE50882B1 (it) |
IT (1) | IT1134726B (it) |
NL (1) | NL8006665A (it) |
NZ (1) | NZ195660A (it) |
SE (1) | SE8008587L (it) |
ZA (1) | ZA807678B (it) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4410982A (en) * | 1981-05-07 | 1983-10-18 | Gte Automatic Electric Labs. Inc. | Arrangement for extending digital signaling to telephone subscribers' substations |
DE3221387A1 (de) * | 1982-06-05 | 1983-12-08 | Krone Gmbh, 1000 Berlin | Digitales fernsprechendgeraet mit anschluessen fuer analoge zusatzgeraete |
US4592046A (en) * | 1983-03-13 | 1986-05-27 | Iwasaki Tsushinki Kabushiki Kaisha | Subscriber's circuit for time division switching system |
JPS63283351A (ja) * | 1987-05-15 | 1988-11-21 | Canon Inc | Isdnタ−ミナルアダプタ |
US5241564A (en) * | 1989-08-30 | 1993-08-31 | Digital Equipment Corporation | Low noise, high performance data bus system and method |
AT406534B (de) * | 1996-07-03 | 2000-06-26 | Ericsson Austria Ag | Schaltungsanordnung zur detektion von analogen vermittlungs- und prüfsignalen |
US6169801B1 (en) | 1998-03-16 | 2001-01-02 | Midcom, Inc. | Digital isolation apparatus and method |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2377132A1 (fr) * | 1977-01-11 | 1978-08-04 | Labo Cent Telecommunicat | Dispositif de protection pour joncteur electronique |
NL7700719A (nl) * | 1977-01-25 | 1978-07-27 | Philips Nv | Storingsongevoelig lijnsupervisiecircuit. |
US4087646A (en) * | 1977-01-28 | 1978-05-02 | Bell Telephone Laboratories, Incorporated | Dual mode telephone subscriber loop current detector |
GB1583634A (en) * | 1977-03-02 | 1981-01-28 | Int Standard Electric Corp | Subscriber line/trunk circuit |
JPS5469906A (en) * | 1977-11-15 | 1979-06-05 | Nippon Telegr & Teleph Corp <Ntt> | Analog-to-digital converter circuit |
JPS54157407A (en) * | 1978-06-02 | 1979-12-12 | Hitachi Ltd | Level control unit for time-division exchange |
US4268723A (en) * | 1979-09-04 | 1981-05-19 | Western Electric Company | Circuits and methods for initializing the loop current of a telephone set |
GB2064915B (en) * | 1979-11-29 | 1984-03-21 | Standard Telephones Cables Ltd | Telephone line feed circuit |
-
1979
- 1979-12-13 GB GB7943074A patent/GB2066023B/en not_active Expired
-
1980
- 1980-11-21 DE DE19803043906 patent/DE3043906A1/de not_active Withdrawn
- 1980-11-27 NZ NZ195660A patent/NZ195660A/en unknown
- 1980-12-08 US US06/214,326 patent/US4345115A/en not_active Expired - Lifetime
- 1980-12-08 SE SE8008587A patent/SE8008587L/ unknown
- 1980-12-08 AU AU65149/80A patent/AU541812B2/en not_active Ceased
- 1980-12-08 ZA ZA00807678A patent/ZA807678B/xx unknown
- 1980-12-09 NL NL8006665A patent/NL8006665A/nl not_active Application Discontinuation
- 1980-12-11 JP JP17392380A patent/JPS56111394A/ja active Pending
- 1980-12-11 FR FR8026263A patent/FR2472320A1/fr active Pending
- 1980-12-12 CH CH9181/80A patent/CH651986A5/de not_active IP Right Cessation
- 1980-12-12 IE IE2601/80A patent/IE50882B1/en unknown
- 1980-12-13 EG EG771/80A patent/EG13942A/xx active
- 1980-12-15 IT IT26650/80A patent/IT1134726B/it active
-
1981
- 1981-09-18 BE BE2/59367A patent/BE890404R/fr not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPS56111394A (en) | 1981-09-03 |
ZA807678B (en) | 1981-12-30 |
GB2066023A (en) | 1981-07-01 |
SE8008587L (sv) | 1981-06-14 |
CH651986A5 (de) | 1985-10-15 |
FR2472320A1 (fr) | 1981-06-26 |
AU6514980A (en) | 1981-06-18 |
US4345115A (en) | 1982-08-17 |
AU541812B2 (en) | 1985-01-24 |
EG13942A (en) | 1983-03-31 |
BE890404R (fr) | 1982-01-18 |
GB2066023B (en) | 1983-11-09 |
IE802601L (en) | 1981-06-13 |
IE50882B1 (en) | 1986-08-06 |
NL8006665A (nl) | 1981-07-16 |
IT8026650A0 (it) | 1980-12-15 |
NZ195660A (en) | 1984-03-30 |
DE3043906A1 (de) | 1981-10-29 |
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