Arrangement for powering a subscriber unit

Abstract

Abstract 1. Arrangement for feeding a subscriber equipment (T), which is devoid of energy store and connected by means of a two-wire line (DL) with an exchange, from the exchange battery (UB), wherein the feed-current circuit is closed in the case of a connection or an outgoing seizing through actuation of a switching means in the subscriber equipment (T), characterised thereby that a respective switching equipment, which responds to current or voltage thresholds being exceeded or fallen below, is inserted at the exchange side and at the subscriber side on the one hand between two-wire line (DL) and exchange battery (UB) and on the other hand between two-wire line (DL) and subscriber equipment (T), that the two-wire line (DL) is switchable off from the exchange battery (UB) or over to other potentials, that the switching-off or switching-over of the two-wire line (DL) takes place when it is not seized, that the switching equipment at the exchange side is a threshold discriminator which responds on actuation of the switching means (S) at the subscriber side, whereby the switching-off or switching-over of the two-wire line (DL) is cancelled and that the switching equipment at the subscriber side is a threshold discriminator which responds on cancellation of the switching-off or switching-over of the two-wire line (DL), whereby the feed-current circuit is closed.

Inventors

• 👤 Hartmut Ing.-Grad. Scheffler
• 👤 Günter Wolfgang Dipl.-Ing. Ruff

Bibliographic Details