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system is an old method, technology, computer system, or application program, of, relating to, or being a previous or outdated computer system..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.
For example, NSM last year acquired a company with a custom back-office system developed in COBOL in the 1990s. The legacy system did the work the acquired company needed, but it required a niche firm to maintain it at a significant cost and, moving forward, it couldn't handle NSM's business requirements. The system would have to go.