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Statements

Subject Item

dbr:Line_card

rdf:type

dbo:BaseballLeague

rdfs:label

Line card

rdfs:comment

A line card or digital line card is a modular electronic circuit designed to fit on a separate printed circuit board (PCB) and interface with a telecommunications access network. A line card typically interfaces the twisted pair cable of a plain old telephone service (POTS) local loop to the public switched telephone network (PSTN). Telephone line cards perform multiple tasks, such as analog-to-digital and digital-to-analog conversion of voice, off-hook detection, ring supervision, line integrity tests, and other BORSCHT functions. In some telephone exchange designs, the line cards generate ringing current and decode DTMF signals. The line card in a subscriber loop carrier is called a subscriber line interface card (SLIC).

foaf:depiction

n12:Northern_Telecom_World_Line_Card_NT6X17BA.jpg n12:WE500GLineCard.png

dcterms:subject

dbc:Telecommunications_equipment

dbo:wikiPageID

863993

dbo:wikiPageRevisionID

798645426

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dbr:Off-hook dbr:Digital-to-analog_converter dbr:ISDN dbr:Western_Electric dbr:Network_element dbr:DMS-100 dbr:DSL dbr:Public_switched_telephone_network dbr:Telephone_exchange dbr:Analog-to-digital_converter dbr:Plain_old_telephone_service dbr:Telephone_line dbc:Telecommunications_equipment dbr:DTMF dbr:Twisted_pair dbr:Telecommunications dbr:Local_loop dbr:Printed_circuit_board dbr:Ringing_(telephony) dbr:BORSCHT dbr:Access_network dbr:5ESS_switch dbr:Subscriber_Loop_Carrier

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n12:WE500GLineCard.png?width=300

dbp:caption

Northern Telecom World Line Card NT6X17BA, circa 1995 A Western Electric 400G line card for 1A2 key systems

dbp:direction

horizontal

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Northern Telecom World Line Card NT6X17BA.jpg WE500GLineCard.png

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134 170

dbo:abstract

A line card or digital line card is a modular electronic circuit designed to fit on a separate printed circuit board (PCB) and interface with a telecommunications access network. A line card typically interfaces the twisted pair cable of a plain old telephone service (POTS) local loop to the public switched telephone network (PSTN). Telephone line cards perform multiple tasks, such as analog-to-digital and digital-to-analog conversion of voice, off-hook detection, ring supervision, line integrity tests, and other BORSCHT functions. In some telephone exchange designs, the line cards generate ringing current and decode DTMF signals. The line card in a subscriber loop carrier is called a subscriber line interface card (SLIC). A line card can terminate a line supporting voice POTS service, ISDN service, DSL service, or proprietary ones. Some line cards are capable of terminating more than one type of service. Since an access network element is usually intended to interface many users (typically a few thousand), some exchanges have multiple line terminations per card. Likewise, one network element can have many line cards.

gold:hypernym

dbr:Circuit

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wikipedia-en:Line_card?oldid=798645426&ns=0

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2422

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wikipedia-en:Line_card