until you hear the “Du” sound, Call 1 will be maintained and the interrupting call (Call 2) will be answered automatically.
2.To proceed the triple phone conversation while you are an- swering the interrupting call (Call 2), press the increase (+) volume key for 2~3 seconds until you hear the “Du” sound, the maintained Call 1 will be renewed, then the three ends can talk together.
3.To end the triple phone conversation, press the function but- ton, then Call 1 and Call 2 will be hanged up together.
Note:
●To activate this function, you must make sure the assigned tele- communications agent supports this service.
●To activate this function, please refer to the instructions of your mobile phones manual to make sure your phone program sup- ports this function.
●When the triple phone conversation is on board, it can not return to the mode of having only Call 1 or Call 2.
●When the triple phone conversation has not been activated, you can press the decrease
●If Call 1 is maintained and Call 2 is on line, quickly press the function button to end Call 2 and renew Call 1.
18. Adjusting the Volume
During a call, you may adjust the Headset’s volume.
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