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system is an old method, technology, computer system, or application program, of, relating to, or being a previous or outdated computer system..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.
Legacy means an older style or system. An example of legacy is the filing system of a previous secretary at your new job. The definition of legacy is something that is passed on to you from family, including reputation. An example of legacy is family property that has been handed down for generations.