Message feeding method for telephone subscriber's call line

摘要

The method involves determining the call condition of the calling (T1) and the called (T1) subscribers. A message signal source (5) is switched in the exchange (1) to the line of the calling subscriber by lifting the handset at its apparatus. A call and signal machine (4) is switched only to the line to the called subscriber. As soon as the called subscriber has lifted the handset the message signal source is switched-off. Preferably the exchanges contain automatic dialling apparatus (61, 62), repeating the dialling on the called subscriber's engaged condition.