Norton.com > Viruses & Risks > Glossary > prefix
PRINT THIS PAGE
 

Glossary

Search Glossary
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | _1234567890

prefix

A code that is required before a telephone number (it can be any number of digits). For example, the number 9 is often required to call out from many office Private Branch Exchange (PBX) systems.