Patent ID: 7543035

Claim:
A communication system comprising: a receiving unit configured to perform facsimile communication with a facsimile appararus according to a predetermined facsimile procedure, and to receive image data transmitted from said facsimile apparatus; a recognition unit configured to recognize a priority level of the image data received by said receiving unit based on information included in an expansion area of a Digital Command Signal (DCS) according to the predetermined facsimile procedure performed by said receiving unit to receive the image data, the priority level being designated in said facsimile apparatus; a converting unit configured to convert the image data received by said receiving unit into image data to be transmitted as an e-mail; and a transmitting unit Configured to attach priority level information indicating the priority level recognized by said recognition unit to the image data converted by said converting unit, and to transmit the image data to which the priority level information is attached so that a user who receives the image data transmitted by said transmitting unit can identify the priority level of the image data.