Is the Demarcation Point?

In telecommunications networks, the demarcation point (often abbreviated to DEMARC and otherwise known as boundary point or network boundary point) is the physical point at which the public switched telephone network ends and the private network of the customer begins.

Which definition is correct for demarcation point?

It is the dividing line which determines who is responsible for installation and maintenance of wiring and equipment—customer/subscriber, or telephone company/provider. The demarcation point varies between countries and has changed over time. Demarcation point is sometimes abbreviated as demarc, DMARC, or similar.

How do you find the demarcation point?

It may be labelled with “test jack” and/or your telephone number.
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You can usually find a demarcation point in any of the following locations:
  1. Outside wall of the house.
  2. Inside the house adjacent to the electrical panel.
  3. On the inside wall opposite where the telephone line enters the house from outside.
Marcus Vance

Marcus Vance

Cybersecurity & Digital Privacy Researcher

Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.