Definition

demarc (demarcation point)

A demarc (an abbreviation for demarcation point) marks the point where communications facilities owned by one organization interface with that of another organization. In telephone terminology, this is the interface between customer-premises equipment and network service provider equipment.

A synonym is network terminating interface (NTI).

Related glossary terms: RS-232C, encoder, online, BOC (Bell operating company), Peltier effect, LEC (local exchange carrier), IT Survival Kit: Networking refreshers, downstream, Usenet, network configuration management (NCM)

Contributor(s): Brandon Lemke and Mike Raymer

This was last updated in April 2005

Posted by: Margaret Rouse

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