MOTREX CO. LTD. MTXA300BA ユーザーズマニュアル

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        -  In case of failure of Bluetooth pairing:
          * Delete items in paired list on your phone.
          * Reset both phone by power off/on and the Audio Unit by ACC off/on.
        - Connecting priority of Handsfree profile is higher than headset profile.
        - The Headset mode does not support Caller ID, Reject call and Call Transfer.

6. Using the Audio Unit as a Handsfree Device
    1) When there is an incoming call, it shows CALL FROM and follows with the Phone
        number on the display.
    2) To accept call
        Press CALL button, it appears TALKING on the display.
    3) To end call
        To end call, press CALL END button, it appears CALL OFF on the display.
    4) To reject call
        To reject call, press button when ringing, it appears CALL OFF on the display.
    Note:
        - It does not support to display contact while talking.
        - It does not support three-way calling.

7. Audio Transfer Between the Audio Unit and Phone
    The audio transfer function is for switching the talking from the Audio Unit to the
    connected phone for private conversation.
    1) Press CALL button briefly during conversation, it appears CALL TRANS on the 
        display. To switch back to the Audio Unit, press button again during private 
        conversation, then it appears CALL TRANS on the display again.
    Note:
        - This function might cause disconnection of Bluetooth link in some phones, but do 
          not worry about it, just press the CALL button during private conversation and
          switch back to the Audio Unit automatically.
        - The quality of calling between Cellular Phone and Audio Unit is better than 
          calling between one Audio Unit and another one.

8. Last Call number dialing
    Press CALL button briefly, it appears CALL TO, then simply press CALL button once 
    again, it would make the last call with phone number display on LCD.
    Note:
        - If you are using Samsung phone, then you may need to press the CALL button one
          more time to make the last call out. First press button shows phone contact list in
          your phone, then second press make the last call.

9. To Make a Call by Cellular Phone
    1) With ignition on, and Audio Unit powered off, it will automatically power on when
        you make a call by Phone or when there is an incoming call. And once the talking 
        finished, it power off by itself. 
    2) When you make a call process by Cellular Phone, it shows CALL TO and follows
        TALKING once the other side answers the call.
    3) When you receive a call, it shows CALL FROM and follows the the phone number
        on the display.

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10. To Make a Call by Audio Unit
    - To Select a Number from the Phone Book
    With a phone paired OK, press and hold SEL button for more than 2 seconds, it 
    would display NAME SCAN on the LCD, then simply turn TUNE knob to scroll 
    display the phone book in the paired phone. At your desired number, press CALL 
    button to make the call. 
    To exit the Phone Book, simply press SEL button once again at the NAME SCAN
    mode.

 
    
    - To Store the Phone Number into the Audio Unit
    Simply press the numeral button 1~6 while Bluetooth talking to store the current
    phone number into the corresponding button. 
    - To Recall the Stored Phone Number
    With a phone paired OK, press CALL button, it would display CALL TO on the
    display,  then press one of the numeral buttons to dial the number which stored 
    in the corresponding button.

11. To Play the Bluetooth Music
    The Audio Unit supports A2DP (Audio Advanced Distribution Profile) and AVRCP
    (Audio Video Remote Control Profile), and both profiles are available to listen 
    music at the Audio Unit via cellular phone which is supporting the two profiles above.
    1) With a phone paired OK, press MEDIA (5) button on the Audio Unit to change
        to BLUETOOTH mode, it would begin to play the music files in the paired Phone.
        Note: For some phones, it might need to activate music play via the phone first.
    2) During BT MUSIC playing, you could operate following functions on the Audio 
        Unit or via the paired Phone.
        Next Track: Press Track up button.
        Previous Track: Press Track down button.
        Note: if the track elapse time is over 5 seconds, then need to press track down twice
                  to select the previous track. First press to go back to the beginning of the track,
                  press it again within 5s to go to previous track.) 
        MUTE: Press MUTE button mute sound output; press it again to resume.
        Play/Pause: Press CALL END button to pause the music; press it again to resume.
        Note: RPT, RDM, Track forward / rewind functions not work in Bluetooth mode.
    3) ID3 Tag display
        This Audio Unit could scroll display the ID3 of the songs while BT MUSIC 
        playing. (ID3 tag: Title/Artist/Album).