Line card

Line Replacement UnitSubscriber Line Interface Circuit
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.wikipedia
39 Related Articles

BORSCHT

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.
BORSCHT is an acronym for the set of functions performed by a subscriber line interface circuit (SLIC) in the line card of a telecommunication system.

Ringing (telephony)

ringingmagenta boxcall bell
In some telephone exchange designs, the line cards generate ringing current and decode DTMF signals.
When the subscriber line is called, a relay on the subscriber line card connects the ringing generator to the subscriber line.

5ESS Switching System

5ESS switch5ESSNo. 5 Electronic Switching. System (ESS)
5ESS switch
In contrast to Nortel's DMS-100 which uses individual line cards with a codec, most lines are on two-stage analog space-division concentrators or Line Units, which connect as many as 512 lines, as needed, to the 8 Channel cards that each contain 8 codecs, and to high-level service circuits for ringing and testing.

DMS-100

remote switching centreDMS-250
DMS-100
Analog lines are terminated on individual line cards, each with its own codec, in pull-out Line Drawers in frames.

Printed circuit board

circuit boardPCBprinted circuit boards
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.

Telecommunication

telecommunicationscommunicationstelecom
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.

Access network

accessaccess attemptaccess networks
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.

Twisted pair

twisted-pairunshielded twisted pairshielded twisted pair
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).

Plain old telephone service

POTSLocal Telephone Servicetelephone
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). A line card can terminate a line supporting voice POTS service, ISDN service, DSL service, or proprietary ones.

Local loop

subscriber lineloopsubscriber loop
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).

Public switched telephone network

PSTNtelephone networkpublic telephone 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

phone linelinetelephone lines
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.

Analog-to-digital converter

ADCanalog to digital converteranalog-to-digital conversion
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.

Digital-to-analog converter

DACDACsdigital to analog converter
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.

On- and Off-hook

off-hookon-hookon hook
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.

Telephone exchange

exchangescentral officeexchange
In some telephone exchange designs, the line cards generate ringing current and decode DTMF signals.

Dual-tone multi-frequency signaling

DTMFtouch-tonetouch tone
In some telephone exchange designs, the line cards generate ringing current and decode DTMF signals.

Subscriber loop carrier

a device that convertssubscriber line carrier
The line card in a subscriber loop carrier is called a subscriber line interface card (SLIC).

Integrated Services Digital Network

ISDN ISDNISDN30
A line card can terminate a line supporting voice POTS service, ISDN service, DSL service, or proprietary ones.

Digital subscriber line

DSLxDSLDigital Subscriber Line (DSL)
A line card can terminate a line supporting voice POTS service, ISDN service, DSL service, or proprietary ones.

Network element

Network management systems
Since an access network element is usually intended to interface many users (typically a few thousand), some exchanges have multiple line terminations per card.

MoSys

MoSys, Inc.
MoSys, Inc. is a publicly traded fabless semiconductor company based in Santa Clara, California that sells solutions for data path connectivity, speed and intelligence while eliminating data access bottlenecks on line cards and systems scaling from 100G to multi-terabits per second.

Multifunctional Information Distribution System

MIDS
The MIDS terminal consists of two different Line Replacement Units (LRUs): the Main Terminal and the Remote Power supply (RPS).

Telephone hybrid

hybridhybrid circuits
The line cards in a telephone central office switch that are interfaced to analog lines include hybrids that adapt the four-wire network to the two-wire circuits that connect most subscribers.

Digital loop carrier

Remote Integrated MultiplexerRIMs
DLC eliminates the need for these remedies by extending out closer to the customer the line card which digitises the voice signal for use by the PSTN.