demarcation point meaning
Demarcation Point. Definition - What does Demarcation Point mean? A demarcation point is the physical point at which a telecommunications company's public network ends and the customer's private network begins. The demarcation point is often the point at which the cable physically enters the building, but this varies from one country to another. The demarcation point defines where the telephone companyâs responsibility for maintenance ends and the consumer's responsibility begins.