DK176293B1 - Gennemvalgskredslöb - Google Patents
Gennemvalgskredslöb Download PDFInfo
- Publication number
- DK176293B1 DK176293B1 DK199300531A DK53193A DK176293B1 DK 176293 B1 DK176293 B1 DK 176293B1 DK 199300531 A DK199300531 A DK 199300531A DK 53193 A DK53193 A DK 53193A DK 176293 B1 DK176293 B1 DK 176293B1
- Authority
- DK
- Denmark
- Prior art keywords
- circuit
- signal
- impedance
- diod
- detecting
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
- H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
- H04Q3/625—Arrangements in the private branch exchange
- H04Q3/627—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/0096—Trunk circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
- H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
- H04Q3/625—Arrangements in the private branch exchange
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR920007883 | 1992-05-09 | ||
KR1019920007883A KR950012585B1 (ko) | 1992-05-09 | 1992-05-09 | 양방향 다이얼링 트렁크 인터페이싱회로 |
Publications (3)
Publication Number | Publication Date |
---|---|
DK53193D0 DK53193D0 (da) | 1993-05-06 |
DK53193A DK53193A (da) | 1993-11-10 |
DK176293B1 true DK176293B1 (da) | 2007-06-18 |
Family
ID=19332903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK199300531A DK176293B1 (da) | 1992-05-09 | 1993-05-06 | Gennemvalgskredslöb |
Country Status (4)
Country | Link |
---|---|
KR (1) | KR950012585B1 (de) |
DE (1) | DE4315243B4 (de) |
DK (1) | DK176293B1 (de) |
NL (1) | NL194109C (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19755452A1 (de) * | 1997-12-01 | 1999-06-02 | Elmeg Gmbh & Co Kg Kommunikati | Telekommunikationseinrichtung und Voice-Server |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3748396A (en) * | 1971-04-14 | 1973-07-24 | Itt | Direct inward dialing trunk circuit |
DE3306884A1 (de) * | 1983-02-26 | 1984-08-30 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Signalisierungsdetektor fuer fernsprech-nebenstellenanlagen mit durchwahl |
DE3328206A1 (de) * | 1983-08-04 | 1985-02-21 | Siemens AG, 1000 Berlin und 8000 München | Schaltungsanordnung fuer mehrfrequenzempfaenger mit frequenzauswertung von unterbrechungsfrei empfangenen, sich staendig wechselnden frequenzen in fernsprechanlagen |
DE3343646A1 (de) * | 1983-12-02 | 1985-06-13 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Schaltungsanordnung zum erkennen und auswerten von wechselspannungssignalen auf amtsadern |
US4696028A (en) * | 1984-03-26 | 1987-09-22 | Dytel Corporation | PBX Intercept and caller interactive attendant bypass system |
US4955047A (en) * | 1984-03-26 | 1990-09-04 | Dytel Corporation | Automated attendant with direct inward system access |
CA1240088A (en) * | 1985-11-20 | 1988-08-02 | Mitel Corporation | Solid state trunk circuit |
US4914690A (en) * | 1988-03-31 | 1990-04-03 | Nicollet Technologies, Inc. | Universal PBX interface |
DE3822427C2 (de) * | 1988-06-30 | 1997-06-05 | Siemens Ag | Stromsensor für Durchwahl-Amtssätze |
FR2648662B1 (fr) * | 1989-06-19 | 1994-03-18 | Alcatel Business Systems | Joncteur de ligne reseau analogique pour installation telephonique de type prive |
-
1992
- 1992-05-09 KR KR1019920007883A patent/KR950012585B1/ko not_active IP Right Cessation
-
1993
- 1993-05-06 DK DK199300531A patent/DK176293B1/da not_active IP Right Cessation
- 1993-05-07 DE DE4315243A patent/DE4315243B4/de not_active Expired - Fee Related
- 1993-05-10 NL NL9300792A patent/NL194109C/nl not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE4315243A1 (de) | 1993-11-11 |
NL194109B (nl) | 2001-02-01 |
KR930024387A (ko) | 1993-12-22 |
NL194109C (nl) | 2001-06-05 |
DK53193A (da) | 1993-11-10 |
KR950012585B1 (ko) | 1995-10-19 |
DE4315243B4 (de) | 2006-05-18 |
DK53193D0 (da) | 1993-05-06 |
NL9300792A (nl) | 1993-12-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A0 | Application filed | ||
PBP | Patent lapsed |
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