Calling subscriber line identification method - is operated by called subscriber before connection is made using code for name of subscriber

摘要: The name of the subscriber is coded. It then allocated in exchange to corresponding line, and this code automatically released with first ringing signal it fed into line between second signal. Code pulses are separated at called subscriber. They stored they used for alphanumerical display calling subscriber's name. system includes a timing generator, counter an OR gate, together demultiplexer, data selector monoflip.