Editing Demarcation point (section)

===Canada===
[[Image:Demarc2.JPG|thumb|right|20th century Bell Canada demarcation point for a single phone line. The spark-gap [[surge protector]]s on the left have hex heads for easy removal. Near center, a post is connected to the house's [[Ground (electricity)|ground]]. The other two connection points are for [[tip and ring]].  A test jack can be attached nearby so the home-owner or tenant can verify whether the inside wiring is at fault.  Modern Bell Canada demarcation points are [[network interface device]]s.]]
The demarcation point varies from building type and service level. In its simplest form, the demarcation point is a [[junction block]] where [[Extension (telephone)|telephone extensions]] join to connect to the network. This junction block usually includes a [[lightning arrester]] (which requires a wire to [[Ground (electricity)|ground]]). In multi-line installations such as businesses or apartment buildings, the demarcation point may be a [[punch down block]]. In most places this hardware existed before deregulation.