A stick-type ignition coil have a central core, a cylindrical member, primary spool, primary coil, secondary spool, secondary coil, outer core and a resin insulator. The feeding part is for feeding signals. As such, the mobile station and the one or more locally attached peripheral devices share a single PPP session, permitting each device to have its own IP address and allowing the mobile station to provide Mobile IP messaging relay between Mobile IP clients in the attached devices and the supporting network.