The operation is as follows – Acme BTC500 User Manual
Page 7

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GB
phone number to find the number you want to dial, finally briefly press
the
button.
3.
Make a call from the call records of the BTC500: When the BTC500 is in
standby mode, briefly press the volume + button or volume – button once
to open the call records of the BTC500, LCD screen will display the last
incoming call, and then press volume + button or volume – button to see
previous or next phone number to find the number you want to dial, finally
briefly press
button.
4.
Redial last number from the BTC500: Double click the
button to dial
last number.
The operation is as follows:
Function
Operation
Voice dial
Briefly press the
button once
Redial last number
Double click the
button
Cancel calling
Briefly press the
button once
Volume up
Briefly press the volume + button
Volume down
Briefly press the volume – button
End a call
Briefly press the
button once
Answer a call
Briefly press the
button once
Reject a call
When there is an incoming call, briefly press the
button twice
Transfer call (BTC500
to mobile phone)
Press and hold the volume + button for 2 seconds
Transfer call (mobile
phone to the BTC500)
Press and hold the volume + button for 2 seconds
Microphone mute
Press and hold the volume – button for 2 seconds
Cancel mute
Press and hold the volume – button for 2 seconds
Reconnection
Briefly press the
button once