Revision as of 16:01, 6 December 2021 edit Kvng (talk \| contribs) Extended confirmed users, New page reviewers 116,060 edits Adding local short description: "Device that separates the carrier's wiring from the customer's", overriding Wikidata description "device that serves as the demarcation point between the carrier's local loop and the customer's premises wiring" (Shortdesc helper) ← Previous edit		Revision as of 09:51, 10 December 2021 edit undo 136.158.56.232 (talk) →Smartjack Tags: Reverted Visual edit Next edit →
Line 32: Despite the name, most smartjacks are much more than a simple [[telephone jack]]. One common form for a smartjack is a [[printed circuit board]] with a face plate on one edge, mounted in an enclosure. A ~~smartjack~~smartjak may provide signal conversion, converting codes and protocols (e.g. framing types) to the type needed by the customer equipment. It may buffer and/or regenerate the signal, to compensate for signal degradation from line transmission, similar to what a [[repeater]] does. Smartjacks also typically provide diagnostic capabilities. A very common capability provided by a smartjack is [[loopback]], such that the signal from the telephone company is transmitted back to the telephone company. This allows the company to test the line from the central [[telephone exchange]], without the need to have test equipment at the customer site. The telephone company usually has the ability to remotely activate loopback, without even needing personnel at the customer site. When looped back, the customer equipment is disconnected from the line. Line 39: Smartjacks typically derive their operating power from the telephone line, rather than relying on premises electrical power, although this is not a universal rule. == Optical network terminals ==

Network interface device: Difference between revisions