Portable telephone system with telephone answering device

DETAILED DESCRIPTION The present invention has telephone number data recording means used whenever a subscriber is away with his or her portable telephone, wherein if a call is received at the telephone answering device, the caller transmits his or her telephone number data in accordance with the outgoing message of the telephone answering device.
Also, it has an autodialing means which works thereafter and sends a service request command and portable telephone number to an exchange, wherein such service causes telephone number data which had been transmitted from telephone answering device to be displayed.
Furthermore, it has a transmission means which transmits one or more instances of telephone number data in a prescribed format when the portable telephone responds.