To attain radio communication of higher transmission capacity by providing a control means, etc., to make a connection means connect a 2nd communication equipment to the desired number of communication channels according to the discrimination result of a specific discrimination means.

When a certain type of data is transmitted from a data terminal 103 via an antenna 203, a mobile station radio transmitting/receiving part 204 performs sequence processing by an instruction of a mobile station control part 201 to set up a channel to a base station. When the channel is set up, the terminal 103 transmits the sending data to a terminal interface processing part 206 via a connection cable 102 and performs the PIAFS framing of the data at a PIAFS control part 205. The framed data are sent to a memory 202 of a mobile station and wait there for being transmitted from the part 204. Then the data are transmitted via the antenna 203 by an instruction of the part 201.