TELEPHONE SET INCLUDING A RINGER CIRCUIT AND A CONVERSATION CIRCUIT CONNECTED TO COMMON CONNECTION TERMINALS.

摘要

P Telephone set comprising a ringing circuit (6) and a conversation circuit (9) connected to common connection terminals (1), a mechanically controlled switch (21, 23) arranged in the conversation circuit, at least an electronic switch (12) arranged in the ringing circuit and connected to a control member (14) acting as a function of a state of the mechanically controlled switch and of a potential difference between the common point on the one hand and the ring circuit input line or the speech circuit input line on the other hand. /P