Internal telephone network with interconnecting service position - includes manually-operated selector working by-passing service position when engaged to reduce equipment

摘要

The telecommunications circuit is esp. for internal networks served by an interconnecting service position. To save equipment, communications can also be made which bypass the coupling service position. An individual-selector-working, coupling transmission (VUE) is provided for the further communications that are not established by transmission units that can be coupled to the service position via the network (ABL). The by-passing transmission (VUE) extends a first exchange criterium (VM1) to the selector circuit (PS) when it is seized. A second exchange criterium (VM2) is extendable to the selector circuit (PS) when the network (ABL) is seized.