A headset, a method and a system for operating the headset, and a portable terminal using the same are provided. A method for operating a headset, includes: receiving one of a voice call connection request message or an image call connection request message requested from another portable terminal through a mobile communication system by a portable terminal; generating a call connection request signal corresponding to the received call connection request message by the portable terminal; transmitting the generated call connection request signal to a headset connected through a near distance communication channel by the portable terminal; receiving the call connection request signal indicating a voice call or an image call from the portable terminal through the near distance communication channel by the headset; and outputting an alarm specified according to a type of the received call connection request signal by the headset.