PURPOSE: To receive services for a call corresponding to a previously registered call mode kind by reading a message out of a storage means once deciding that the pager is registered for 1a wrong dialing prevention service and sending the message to a wired telephone set which has called the pager.

CONSTITUTION: When the pager 2 is called by the wired telephone set, the decision means 10 of a control office 4 retrieves a 1st storage means 6 to decide whether or not the wrong dialing prevention service is registered for the pager 2. When the service is registered, a message sending-out means 11 reads the message for discriminating the pager 2 corresponding to the calling, e.g. αThe dialed number is ...'out of the 2nd storage means and sends it out to the wired telephone set. The caller who has called the pager 2 through the wired telephone set can know whether or not the call is correct or not judging from the message. The called pager 2 can be prevented from being called by wrong dialing.