Wiring Implementation Flashcards
Krone LSA-PLUS
A krone is an European-style telecommunications connector.
Building Industry Cross-Connect
BIX is a cross-connect system. It consists of various sizes of punch down blocks, cable distribution accessories, and a punch down tool to terminate wires on the punch down block.
Power over Ethernet
(PoE)
PoE is a technology that allows a single cable to provide both data and electrical power to devices such as wireless access points, IP cameras, and VoIP phones.
Pinout
When connecting two devices using twisted-pair cabling, the pinout determines which wire goes to which pin of the connector.
Local exchange carrier
(LEC)
In the United States, LEC is a term used for a public telephone company that provides local services. LECs are sometimes called telcos.
Demarcation point
(demarc)
The demarc is the line that marks the boundary between the telecommunications (telco) equipment and your private network or telephone system.
Main distribution frame
(MDF)
A frame or rack that is used to interconnect and manage telecommunication wiring in a building. It functions like an old-time telephone switchboard, where operators used connecting wires to route telephone calls. MDF can also refer to the room that houses the traditional MDF along with networking patch panels.
Punch down block
A device that connects one group of wires to another through a system of metal pegs.
Patch panel
Patch panels permit circuits to be arranged and rearranged by plugging and unplugging respective patch cords on a mounted hardware assembly.
T568A
Pin 1: GW = White with green stripe
Pin 2: G = Green
Pin 3: OW = White with orange stripe
Pin 4: B = Blue
Pin 5: BW = White with blue stripe
Pin 6: O = Orange
Pin 7: BrW = White with brown stripe
Pin 8: Br = Brown
T568B
Pin 1: OW = White with orange stripe
Pin 2: O = Orange
Pin 3: GW = White with green stripe
Pin 4: B = Blue
Pin 5: BW = White with blue stripe
Pin 6: G = Green
Pin 7: BrW = White with brown stripe
Pin 8: Br = Brown
Straight-Through
Most twisted pair cables are manufactured as straight-through cables
Connect computers to a hub or switch with a straight-through cable.
The pinout order on a computer’s network interface card (NIC) is different than the pinout order on the hub or switch port.
Transmit pins of the NIC map to the receive pins on hub or switch and vice versa.
Crossover
If a network device such as a hub or switch does not have an uplink port, use a crossover cable when connecting it to another network device.
You can also connect one computer directly to another using a crossover cable.
A crossover cable maps the transmit pins on one end of the cable with the receive pins on the other end.
You can easily create a crossover cable as follows:
Use the T568A standard to attach an RJ45 connector to one end.
Use the T568B standard to attach an RJ45 to the other end
MPOE
EU-POT
The demarc is also called the minimum point of entry (MPOE) or the end user point of termination (EU-POT).