A local radio base station apparatus having a local radio base station for connection by wireless communication links with plural public radio mobile stations and a public representative radio mobile station for connection by a wireless communication link with the local radio base station. When there is a call from a public line by a phone number of the public representative mobile station and an additional number, an additional number analyzer provides an output employed to switch a call link with the public representative mobile station to a call link with the public radio mobile station. A call for a public line given by the public radio mobile stations is locally accepted by the public representative radio mobile station. After the radio link is established, the local radio base station issues a request for a call to a network and then switches to the call link with the public radio mobile station after the identification is terminated. When there is a call by the phone number accompanied with an additional number, a voice processor controller is enabled to record a mail in the local radio base station.