Headsets with integrated microphone can be connected to other devices, such as a telephone, by means of wired or wireless technology. Various different plugs are used for wired connections. Headsets frequently come with the same type of plug as that used to connect a normal telephone receiver to the telephone. Common types of plug for this purpose are RJ9 and RJ11. System telephones often have manufacturer-specific interfaces.
Wireless connections can be established by various means. The Bluetooth standard is one of the most popular wireless connection methods. All modern mobile phones support Bluetooth. DECT technology can be used to bridge larger distances between the telephone and the headset.