A communication apparatus connected to a network to be able to communicate with another device includes a first control portion to communicate with another device connected to the network, and a second control portion to be driven in response to input of a reset signal from the first control portion and to communicate with another device through the first communication portion. The first control portion includes a detection portion to detect data transmitted from another device to the communication apparatus, a data storage portion to store the data to the communication apparatus, and a reset portion to output the reset signal to the second control portion in response to detection of the data to the communication apparatus. The second control portion includes a stop portion to stop driving of the second control portion when a predetermined condition is met, and a network communication portion to communicate with another device based on the detected data to the communication apparatus. One of the first control portion and the second control portion further includes a communication continuation portion to transmit data including a reply for continuing communication with another device, based on the detected data to the communication apparatus, until the network communication portion becomes able to communicate with another device. After becoming able to communicate with another device, if data is stored in the data storage portion, the network communication portion further communicates with another device based on the stored data.