Telephone station esp. for connecting to dictation machine - has two cradle switches which may break ringer circuit and close speech circuit when required

摘要

The telephone station (TS) has a receiver, a transmitter and two cradle switches which break the ringer circuit. It has further four a.c. contacts (t1-t4)operated by a key, which when operated disconnect the microphone (M) and the receiver (He from the telephone instrument (TS) and connect them to a dictation machine (DG). A fifth contact (T5) of the same key shunts the first cradle switch (Gu2), and a sixth contact (t6) prevents the speech circuit closing by the second cradle switch (Gu1).