This invention is to provide a communication apparatus capable of quickly performing facsimile communication through the Internet by dial-up connection. When facsimile communication through the Internet is executed from a station A to a station B by dial-up connection, the user at the station B is notified, from the station A using a PSTN, that communication through the Internet has been executed. When it is notified using the PSTN that communication through the Internet has been executed, the apparatus at the station B sets up connection to the Internet by dial-up connection to receive facsimile communication information through the Internet by POP.