This disclosure relates generally to fax communication and more particularly to methods and systems for increasing quality and reliability of fax communications. In one embodiment, a method of communicating fax in a communication network is provided. The method includes diagnosing in real-time, by at least one network device, network parameters, availability of network resources, and technical capabilities of network devices involved in communicating fax; modifying dynamically, by the at least one network device, a fax mode to one of a set of pre-set fax modes based on result of the diagnosing the network parameters, availability of the network resources, and the technical capabilities of the network devices, wherein each of the set of pre-set fax modes corresponds to a quality of fax communication; and iteratively adapting, by the at least one network device, dynamic modification of the fax mode, based on historic fax mode modification and historic diagnosis data.

A function performing apparatus may include a first wireless interface and a controller. The controller may include a setting information memory configured to store setting information indicating a selected result selected by a user among a first setting and a second setting, the first setting indicating that target data is to be sent to an external apparatus via the first wireless interface, and the second setting indicating that the target data is not sent to the external apparatus. The controller is configured to maintain an operation state of the function performing apparatus in a power saving state, in a case where a predetermined notice is obtained from the first wireless interface under a situation where the operation state of the function performing apparatus is the power saving state and the setting information memory stores the setting information indicating the second setting.

An apparatus includes a first wireless interface and a controller. The controller includes a setting information memory configured to store setting information indicating a selected result selected by a user among a first setting and a second setting, the first setting indicating that target data is to be sent to an external apparatus via the first wireless interface, and the second setting indicating that the target data is not sent to the external apparatus. The controller is configured to perform: maintaining an operation state of the function performing apparatus in a power saving state, in a case where a predetermined notice is obtained from the first wireless interface under a situation where the operation state of the function performing apparatus is the power saving state and the setting information memory stores the setting information indicating the second setting.