Apparatus for subscriber testing of a telephone line

Abstract From the Canadian patent

Abstract of the Disclosure, Subscriber testing of a telephone line at, the subscriber's premises, is obtained by disconnecting all telephones at the premises from the telephone line and connecting a circuit across the Tip and Ring lines which corresponds to a telephone set. A signal device such as, an LED, will actuate if the telephone lines provide at least the minimum power for acceptable operation of a telephone set transmitter. This enables location of a fault to be localized either in a subscriber's premises or in the telephone line to the premises. - i -