BG48917A1 - Device for conversion of signal information between automatic telephone station and digital densifying telephone system - Google Patents

Device for conversion of signal information between automatic telephone station and digital densifying telephone system

Info

Publication number
BG48917A1
BG48917A1 BG8864189A BG8864189A BG48917A1 BG 48917 A1 BG48917 A1 BG 48917A1 BG 8864189 A BG8864189 A BG 8864189A BG 8864189 A BG8864189 A BG 8864189A BG 48917 A1 BG48917 A1 BG 48917A1
Authority
BG
Bulgaria
Prior art keywords
register
densifying
conversion
digital
signal information
Prior art date
Application number
BG8864189A
Inventor
Adrian D Traskov
Valentin D Dankov
Nikolaj K Chimev
Original Assignee
Inst Saobshtitelna Promishleno
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Inst Saobshtitelna Promishleno filed Critical Inst Saobshtitelna Promishleno
Priority to BG8864189A priority Critical patent/BG48917A1/en
Publication of BG48917A1 publication Critical patent/BG48917A1/en

Links

Landscapes

  • Devices For Supply Of Signal Current (AREA)

Abstract

The device is used in telecommunications for the complementation of telephone lines. It is independent from the parameters of the bi-conductive line, it is highly reliable and it reduces the consumption of power. The signalling bites enter in a register for the management of the condition of the train (14), the exits of which reach the entry of the transistor key (15), whose exit reaches a power generator (16), connected with one of the terminals of a second power generator (19). The second terminal of the latter is connected via an electronic DROSEL (18) with a second bridge rectifier (19). When the channel is used, a command for closing the train to one of the entries of the register (14), opens the transistor key (20) and through a third trigger of Schmidt (21) and a buffer register (8) is send an indication to the managing device (4.1), which is of micro-processor nature. The choice of a channel, its management and registration of the respective states of the exits of the digital signals are managed by the managing device (4.1).
BG8864189A 1989-05-31 1989-05-31 Device for conversion of signal information between automatic telephone station and digital densifying telephone system BG48917A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BG8864189A BG48917A1 (en) 1989-05-31 1989-05-31 Device for conversion of signal information between automatic telephone station and digital densifying telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BG8864189A BG48917A1 (en) 1989-05-31 1989-05-31 Device for conversion of signal information between automatic telephone station and digital densifying telephone system

Publications (1)

Publication Number Publication Date
BG48917A1 true BG48917A1 (en) 1991-06-14

Family

ID=3921953

Family Applications (1)

Application Number Title Priority Date Filing Date
BG8864189A BG48917A1 (en) 1989-05-31 1989-05-31 Device for conversion of signal information between automatic telephone station and digital densifying telephone system

Country Status (1)

Country Link
BG (1) BG48917A1 (en)

Similar Documents

Publication Publication Date Title
AU594696B2 (en) Automatic personnel monitoring system
GB2332828A (en) Emergency location system and method
CA2025140A1 (en) Communication terminal having means for controlling power transfer
BE905569A (en) INTERMEDIATE SYSTEM BETWEEN A NORMAL TELEPHONE APPARATUS AND A RADIO TRANSCEIVER.
SE459539B (en) SECURITY SYSTEM INCLUDING A SIGNAL TRANSMITTER FOR TRANSFER OF CONDITION INFORMATION THROUGH A TELECOMMUNICATION CHANNEL
BG99626A (en) Device for communication channel testing
DK0451056T3 (en) Electronic device for telephone system
BG48917A1 (en) Device for conversion of signal information between automatic telephone station and digital densifying telephone system
SE8003907L (en) ELECTRONIC KEYBOARD INTERFACE FOR A PHONE DEVICE
IE50882B1 (en) Subscriber's line interface
US3091663A (en) Coin box telemetering arrangement
JPS6429050A (en) Electronic exchange system
ES2116360T3 (en) TELECOMMUNICATION SYSTEM WITH A TERMINAL CONFIGURED AS A HANDS-FREE INTERCOM.
DE3063942D1 (en) Subscriber line circuit with ground key activation indication, high ohmic commutable feeding and apparatus for ringing-signal generation
JPS6481594A (en) Key telephone set
ES2071062T3 (en) TELECOMMUNICATION AND MANAGEMENT TERMINAL CONNECTABLE TO THE TELEPHONE NETWORK AND AUTOMATIC CALL DEVICE FOR SUCH TERMINAL.
JPS57145466A (en) Switchboard
JPS56131247A (en) Remote maintenance system
JPS573465A (en) Retrieval system for telephone line network crossing state
ES2048116A2 (en) Door intercom with door-opening button - centrally generates call signal and feeds to individual internal intercoms using circuit including two series-connected Zener diodes and parallel decoupling diode
SE9702895D0 (en) remote reading system
JPS57145468A (en) Data branching and inserting device
SE8300558D0 (en) DEVICE IN AN ALARM SYSTEM
KR930005421A (en) Telecommunication equipment
DE60314233D1 (en) SYSTEM FOR ADAPTING A LOCAL DATA AND LANGUAGE TRANSMISSION NETWORK TO AN ANALOG TELEPHONE LINE