METHOD FOR CONTROLLING ANALOG SUBSCRIBER CALL USING SUBSCRIBER CIRCUIT OF DISTRIBUTED CONTROL EXCHANGER SYSTEM

摘要

The present invention relates to a call control method for controlling a call of an analog subscriber using a telephone user unit, which is a common line signaling method (No. 7), as a signaling method between stations in a distributed control switching system. Line Signaling (no. 7) Through the common line signaling (No. 7) Telephone User Unit (TUP), which is an inter-station signaling system, the analog subscribers accommodated in the distributed control exchange system are matched between the blocks for the telephone user unit. In order to provide a call control method for enabling a call with a subscriber, a first step (41, 42) of determining a relay call type upon receiving a TUP relay call processing request; A second step (43, 44, 47, 49) of generating and performing an outgoing call processing process if the relay call type is outgoing call and then recovering it; And if the relay call type is an attestation code, a telephone call between analog subscribers is possible through a TUP, including a third step (45 to 48) of generating and performing an incoming call processing process and then performing a recovery process. This has the effect of minimizing the impact on the TUP and enabling independent implementation of the TUP's functions.