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system is an old method, technology, computer system, or application program, of, relating to, or being a previous or outdated computer system..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.
1. (Law) a gift by will, esp of money or personal property. 2. (Law) something handed down or received from an ancestor or predecessor. 3. (Computer Science) (modifier) surviving computer systems, hardware, or software: legacy network; legacy application.