A demarc extension is the process of connecting your organizationâs network to a data lineâsuch as a T1, DSL, or POTSâprovided by the telephone company or another vendor.
Legacy system. In computing, a legacy system is an old method, technology, computer system, or application program, of, relating to, or being a previous or outdated computer system.. Often a pejorative term, referencing a system as legacy means that it paved the way for the standards that would follow it.
Adjective[edit] legacy. ( 1 computing) (Can we verify this sense?) That has been in service for many years and that a business still relies upon, even though it is becoming expensive or difficult to maintain. ( Can we verify this sense?) Left behind; old or no longer in active use.