telephony Terms

Question 1

next

Answer 1

near end cross talk - is an error condition that can occur when connectors are attached to twisted pair cabling. NEXT is usually caused by crossed or crushed wire pairs

Question 2

RFI

Answer 2

Radio frequency interference

Question 3

tip

Answer 3

grounded side of telephone wires

Question 4

hookflash

Answer 4

is a button on a telephone that simulates quickly hanging up then picking up again (a quick off-hook/on-hook/off-hook cycle). This action can signal the telephone exchange to do something

Question 5

pots

Answer 5

plain old telephone service

Question 6

Protectors

Answer 6

a structure mounted on a medium density fiber board to guard against damage from outside sources such as lightning

Question 7

ring

Answer 7

-48vdc

Question 8

ISDN

Answer 8

Integrated service digital network - A guideline for upgrading global telephone communications to a completely digital switched network

Question 9

hook switch

Answer 9

the hook a telephone rests on

Question 10

byte

Answer 10

a byte is equal to 8 bits

Question 11

demarc

Answer 11

demarcation point - point where the private network meets the public network

Question 12

NID

Answer 12

network interface device - device where the private network meets the public network

Question 13

EMI

Answer 13

electromagnetic interfierance

Question 14

Voip

Answer 14

connects telephones to the IP network

Question 15

Bit

Answer 15

is the smallest unit of data in a computer. A bit has a single binary value, either 0 or 1