The system which manages the addition of the call waiting party to existing member call connection

摘要

As for this system which adds the call waiting party to existing call connection, when directing to one of the party which is in existing call connection terminating call, it operates. The called party blinking the switch hook of those terminal units, reserves the other party of existing call connection, receives terminating call simultaneously. As for the called party, the calling party must communicate with the both of the other party of the called party and existing call connection, unless, when decision is lowered, the system which adds the call waiting party to existing call connection is started. As a substitution, the called party must communicate with only the other party of the existing call connection to which the calling party is in the midst of reserving, unless, when decision is lowered, the system which replaces the called party to the calling party is started.