Communication Device, and Non-Transitory Computer-Readable Recording Medium Storing Computer-Readable Instructions for Terminal Device

A communication device comprising:

• a first wireless interface;
• a second wireless interface different from the first wireless interface, a maximum distance with which a wireless communication can be executed via the second wireless interface is shorter than a maximum distance with which a wireless communication can be executed via the first wireless interface,
• a processor;
• and
• a main memory storing computer-readable instructions therein, the computer-readable instructions, when executed by the processor, causing the communication device to:
• in a case where a first signal is received from a first external device via the second wireless interface under a situation where a participating child station number is less than an upper limit child station number, establish a wireless connection with the first external device via the first wireless interface so as to cause the first external device to participate as a child station in a wireless network in which the communication device operates as a parent station, the participating child station number being a number of child stations currently participating in the wireless network, and the upper limit child station number being an upper limit of a number of child stations that are allowed to participate in the wireless network;
• in a case where a second signal is received from a second external device via the first wireless interface, without receiving the first signal from the second external device via the second wireless interface, under the situation where the participating child station number is less than the upper limit child station number, establish a wireless connection with the second external device via the first wireless interface so as to cause the second external device to participate in the wireless network as a child station;
• in a case where the first signal is received from the first external device via the second wireless interface under a situation where a first value is set as the upper limit child station number in the communication device and the participating child station number is equal to the first value, set a second value instead of the first value as the upper limit child station number in the communication device, the second value being greater than the first value, wherein in a case where the second signal is received from the second external device via the first wireless interface, without receiving the first signal from the second external device via the second wireless interface, under the situation where the first value is set as the upper limit child station number in the communication device and the participating child station number is equal to the first value, the first value is maintained as the upper limit child station number;
• and
• in a case where the second value is set instead of the first value as the upper limit child station number due to the first signal being received from the first external device via the second wireless interface under the situation where the participating child station number is equal to the first value, establish a wireless connection via the first wireless interface with the first external device so as to cause the first external device to participate as a child station in the wireless network, wherein in a case where the first value is maintained as the upper limit child station number due to the second signal being received from the second external device via the first wireless interface, without receiving the first signal from the second external device via the second wireless interface, under the situation where the participating child station number is equal to the first value, a wireless connection with the second external device is not established.

A non-transitory computer-readable recording medium storing computer-readable instructions for a terminal device,

• wherein the computer-readable instructions, when executed by a processor of the terminal device, cause the terminal device to:
• receive a target SSID (abbreviation of Service Set Identifier) from a communication device via a second wireless interface of the terminal device, the target SSID being an SSID of a wireless network in which the communication device operates as a parent station;
• send a predetermined signal including the target SSID and a predetermined character string to the communication device via a first wireless interface of the terminal device in a case where the target SSID is received, the predetermined character string being for setting a second value instead of a first value as an upper limit child station number in the communication device, the upper limit child station number being an upper limit of a number of child stations that are allowed to participate in the wireless network, wherein a maximum distance with which a wireless communication can be executed via the second wireless interface is shorter than a maximum distance with which a wireless communication can be executed via the first wireless interface;
• and
• supply an instruction for participating as a child station in the wireless network to the first wireless interface after the predetermined signal has been sent to the communication device.