AT389605B - Leitungseinheit zur schnittstellenverbindung einer analogleitung mit einer digitalen fernverbindungsanlage - Google Patents
Leitungseinheit zur schnittstellenverbindung einer analogleitung mit einer digitalen fernverbindungsanlage Download PDFInfo
- Publication number
- AT389605B AT389605B AT0355880A AT355880A AT389605B AT 389605 B AT389605 B AT 389605B AT 0355880 A AT0355880 A AT 0355880A AT 355880 A AT355880 A AT 355880A AT 389605 B AT389605 B AT 389605B
- Authority
- AT
- Austria
- Prior art keywords
- analog
- line
- signals
- digital
- circuit
- Prior art date
Links
- 238000012360 testing method Methods 0.000 claims description 16
- 230000005669 field effect Effects 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000004804 winding Methods 0.000 description 12
- 239000003990 capacitor Substances 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
- Monitoring And Testing Of Exchanges (AREA)
- Time-Division Multiplex Systems (AREA)
- Telephonic Communication Services (AREA)
- Analogue/Digital Conversion (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA332,660A CA1123102A (en) | 1979-07-27 | 1979-07-27 | Line interface unit for voice and wide band signal coupling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ATA355880A ATA355880A (de) | 1989-05-15 |
| AT389605B true AT389605B (de) | 1990-01-10 |
Family
ID=4114803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT0355880A AT389605B (de) | 1979-07-27 | 1980-07-08 | Leitungseinheit zur schnittstellenverbindung einer analogleitung mit einer digitalen fernverbindungsanlage |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4232293A (en]) |
| JP (1) | JPS5621438A (en]) |
| AT (1) | AT389605B (en]) |
| CA (1) | CA1123102A (en]) |
| DE (1) | DE3025055A1 (en]) |
| FR (1) | FR2462833A1 (en]) |
| GB (1) | GB2055023B (en]) |
| SE (1) | SE451524B (en]) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1144671A (en) * | 1980-04-30 | 1983-04-12 | Northern Telecom Limited | Central office interface circuit |
| US4432089A (en) * | 1981-12-24 | 1984-02-14 | Motorola, Inc. | Digital loop transceiver for interfacing a digital PABX to a digital subscriber set via a subscriber line |
| US4414435A (en) * | 1982-04-22 | 1983-11-08 | Northern Telecom Limited | Interface circuit with flux cancelling transformer circuit |
| DE3221387A1 (de) * | 1982-06-05 | 1983-12-08 | Krone Gmbh, 1000 Berlin | Digitales fernsprechendgeraet mit anschluessen fuer analoge zusatzgeraete |
| NL8203599A (nl) * | 1982-09-17 | 1984-04-16 | Philips Nv | Hoofdeinde en ontvanger voor een signaaldistributiesysteem. |
| US4554416A (en) * | 1983-03-08 | 1985-11-19 | The United States Of America As Represented By The Secretary Of The Air Force | Low voltage two wire to four wire telephone circuit converter apparatus |
| US4592046A (en) * | 1983-03-13 | 1986-05-27 | Iwasaki Tsushinki Kabushiki Kaisha | Subscriber's circuit for time division switching system |
| US4595802A (en) * | 1983-11-29 | 1986-06-17 | Northern Telecom Limited | Hybrid circuit |
| US4577255A (en) * | 1984-06-20 | 1986-03-18 | Itt Corporation | Lightning protection circuit for digital subscriber loop interface |
| JPS6160057A (ja) * | 1984-08-31 | 1986-03-27 | Clarion Co Ltd | 信号伝送制御装置 |
| JPS63283351A (ja) * | 1987-05-15 | 1988-11-21 | Canon Inc | Ｉｓｄｎタ−ミナルアダプタ |
| JPH04364U (en]) * | 1990-04-17 | 1992-01-06 | ||
| US5267309A (en) * | 1990-11-20 | 1993-11-30 | Alcatel Network Systems, Inc. | Telephone line unit having programmable read-only memory |
| KR940004432B1 (ko) * | 1991-10-02 | 1994-05-25 | 삼성전자 주식회사 | 전자교환기의 PCM CODEC(DOCER and DECODER) 집적회로 |
| CA2356952A1 (en) | 1998-12-31 | 2000-07-06 | Adtran | A method and apparatus for an improved analog echo canceller |
| RU2164058C1 (ru) * | 1999-10-12 | 2001-03-10 | Общество с ограниченной ответственностью "КБ АГАТ-РТ" | Система стыка микропроцессорной аппаратуры с аналоговыми абонентскими двухпроводными телефонными линиями (варианты) и модуль стыка для этих систем |
| US6937701B1 (en) | 2000-06-16 | 2005-08-30 | Nortel Networks Limited | Telecommunications network having a switch equipped with an IVR provisioning/monitoring system |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1401627A (en) * | 1971-11-16 | 1975-07-16 | Post Office | Testing for telecommunications switching systems |
| US3860761A (en) * | 1973-06-14 | 1975-01-14 | Bell Telephone Labor Inc | Digital progressively controlled switching system |
| US3955051A (en) * | 1975-01-17 | 1976-05-04 | Plantronics | Data set with bridge for duplex operation |
| US4007334A (en) * | 1975-07-02 | 1977-02-08 | Bell Telephone Laboratories, Incorporated | Time division digital local telephone office with telemetering line unit |
| CA1051998A (en) * | 1975-11-13 | 1979-04-03 | Northern Electric Company Limited | Tdm pcm communication system |
| US4019149A (en) * | 1976-01-16 | 1977-04-19 | Bell Telephone Laboratories, Incorporated | Correlative data demodulator |
| US4119815A (en) * | 1977-05-31 | 1978-10-10 | American District Telegraph Company | Central station system including secondary communication path established through commercial telephone network |
| US4149030A (en) * | 1977-06-17 | 1979-04-10 | Honeywell Inc. | Multi-drop communications device |
| US4100373A (en) * | 1977-09-28 | 1978-07-11 | Harris Corporation | Adaptive linearizing acoustic coupling system |
| US4103112A (en) * | 1977-10-17 | 1978-07-25 | Northern Telecom Limited | Telephone line circuit with differential loop current sensing and compensation |
-
1979
- 1979-07-27 CA CA332,660A patent/CA1123102A/en not_active Expired
- 1979-09-17 US US06/076,148 patent/US4232293A/en not_active Expired - Lifetime
-
1980
- 1980-06-16 GB GB8019580A patent/GB2055023B/en not_active Expired
- 1980-06-17 FR FR8013455A patent/FR2462833A1/fr active Granted
- 1980-07-02 DE DE19803025055 patent/DE3025055A1/de active Granted
- 1980-07-08 AT AT0355880A patent/AT389605B/de not_active IP Right Cessation
- 1980-07-23 JP JP9999380A patent/JPS5621438A/ja active Granted
- 1980-07-25 SE SE8005409A patent/SE451524B/sv not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SE8005409L (sv) | 1981-01-28 |
| DE3025055C2 (en]) | 1989-04-27 |
| JPS6411175B2 (en]) | 1989-02-23 |
| CA1123102A (en) | 1982-05-04 |
| SE451524B (sv) | 1987-10-12 |
| US4232293A (en) | 1980-11-04 |
| FR2462833B1 (en]) | 1984-06-15 |
| GB2055023A (en) | 1981-02-18 |
| JPS5621438A (en) | 1981-02-27 |
| ATA355880A (de) | 1989-05-15 |
| FR2462833A1 (fr) | 1981-02-13 |
| GB2055023B (en) | 1983-08-10 |
| DE3025055A1 (de) | 1981-02-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ELJ | Ceased due to non-payment of the annual fee | ||
| ELJ | Ceased due to non-payment of the annual fee |