A communication apparatus includes a main control portion corresponding to a terminal determination portion and a connection management portion. Upon determining, from identification information such as IP addresses, that a session establishment request has been received from a gateway that relays facsimile communication between an Internet network and a telephone network, the main control portion establishes a session corresponding to the session establishment request within a range of a preset first maximum number of simultaneous connections. Upon determining that the communication destination terminal is not the gateway, the main control portion establishes a session corresponding to the request within a preset second maximum number of simultaneous connections which is smaller than the first maximum number of simultaneous connections and is obtained by subtracting a preset secured number from the first maximum number of simultaneous connections which is the maximum number of simultaneous connections between the communication apparatus and the gateway.