Direct Access Test Unit
id:
direct-access-test-unit-196-16245198
title:
Direct Access Test Unit
text:
Direct Access Test Units (DATUs) are special PSTN phone numbers that terminate at the central office switch in a telephone company's local exchange that provide switchmen and telco technicians with a circuit for testing lines in various ways. Among the many things a DATU can do are: Make certain electrical connections, such as shorting a line's tip to ring, tip to ground, or ring to ground.
Play certain tones on the line to test the line's audio circuit.
Monitor the audio circuit on the line if
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Direct_Access_Test_Unit
date created:
date modified:
2021-12-15T11:29:35Z
main entity:
{"identifier":"Q5280242","url":"https://www.wikidata.org/entity/Q5280242"}
image:
fields total:
13
integrity:
13