How to deal with digital (ISDN) subscriber waiting call rejection in narrowband integrated network switchboard

摘要

The present invention relates to a method of processing a standby (ISDN) subscriber call rejection in a narrowband integrated communication network exchange. Particularly, when a user requests a standby call rejection service in a dormant state or a busy state, And if the service subscriber is a standby subscriber, storing the standby call rejection service start information; A second step of determining whether a channel is being used when a call reception request is received after the standby call rejection request is properly processed; A third step of performing an inbound process if the channel is not in use, and a third step of inspecting whether the channel is in use if the channel is in use; A fourth step of notifying the other party of the call connection if it is not subscribed to the standby call service; If the subscriber has joined the waiting call rejection service, it notifies the other party of the call. If the subscriber does not subscribe to the standby call rejection service, a fifth step of processing the standby call is provided. DCC, and DSSC), it is easy to apply the digital standby call rejection service to other electronic exchanges by maintaining the modularity of the software system.