- Home
- Data Center Infrastructure
- Networking Hardware
- Line Cards
Line Cards
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.[1]
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).[2][3]
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.[3]
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.
Below is an sample image of a Line Card:
Best Sellers - Line Cards
Categories
Manufacturers
Daily Deals
004RVP Dell 2.4TB 12G 10K 2.5 SED SAS HDD in G176J Tray
00AK872 IBM Lenovo DPS-400AB-9 400 Watts PSU for x3200 M3
00AD918 Emulex VFA5 ML2 Dual Port 10GbE SFP+ Adapter
0034X1 Dell 550Watts Power Supply For PowerEdge R430