An
access network system capable of reducing loss probability in an
access network which is connected on one hand to a service node of an existing network through subscriber lines, and on the other hand to multiple user terminals, and has a concentrating function. A WAC (
Wireless local loop Access Controller, that is, a controller of the
access network) connected with the service node (local switch) receives from a
base station a notification that no idle
wireless channel is present if a
wireless circuit is busy when the service node makes a call request, and receives from the
base station a notification that an idle
wireless channel is present when the
base station detects it in the wireless circuit. If the WAC receives the channel busy notification, or cannot detect an
idle channel in a
trunk line, the WAC reserves a call
processing. If the WAC receives the notification that an idle wireless channel is present, or detects an
idle channel in the
trunk line, and if the current subscriber line from the service node still holds the incoming call state, the WAC releases the reservation of the call
processing, and performs a repeated call
processing for the call request when the call request is still present.