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system is an old method, technology, computer system, or application program, of, relating to, or being a previous or outdated computer system..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 network devices that use single frames and process routes in a centralized manner are lagging behind, as core routers are gradually evolving towards multi-frame, multi-control board, multi-CPU, and multi-core architecture.istributed architecture. Traditionally, every protocol or service is assigned a processing instance; this is restricted by the processing capability and memory space of a single CPU or core, and is now proving incapable of meeting growing demand.