Method and system for setting up phone calls in a telephone network

摘要

The calling signal, generated in a telephone set having a "j" classified number (Z j ), where natural number j = 1, 2, ..., n, is transcoded in the "j" encoder/decoder (K/D j ) to the calling signal of a "k" virtual number, which is sent to a telephone set having an "i" non-classified fixed digit number (N i ), where natural number i = 1, 2, ..., m. Following completion of the call with the telephone set having the "i" non-classified number, only the "k" virtual number, instead of the actual "j" classified number (Z j ), is shown on its display. The subscriber of a telephone set having the "i" non-classified number (N i ) does not recognise the original data on the telephone set having the "j" classified number (Z j ). Electrical signals containing settings that enable single or multiple connections of a telephone set having an "i" non-classified number (N i ) with a telephone set having a "j" classified number (Z j ), within time periods determined by the telephone exchange operator, are generated in the programming device (P).