Dual XHD6425 Installation & Owner's Manual page 23

Function
Making a Phone Call
Last Number Dialing
Receiving a Phone
Call
Refusing a Call
During a Phone Call
Audio Transfer
Call Waiting
Ending a Phone Call
Bluetooth
Press once. An "_" will appear on the display.
Input the desired phone number using the 0-9, *, # buttons on the
head unit front panel. Press
A phone call may also be placed from your mobile device using the
keypad, phone book or speed dial.
To enter last number dialing mode, press
second time. The head unit will display "Last Number Dialing."
Press KEY 0 to cycle through the received, dialed or missed call
categories. Rotate the rotary encoder to cycle through the last 5
calls in the selected category. Note: You have 8 seconds to make a
choice before the head unit returns to Bluetooth standby mode.
Press to begin dialing the selected number.
If an incoming call is detected, the head unit will automatically
switch to Bluetooth mode, muting any current audio.
The incoming phone number will appear on the display, the phone
icon will flash on the display, and a ring tone will be audible
from the vehicle speakers. See Bluetooth Settings for speaker
configurations.
NOTE: The ring audio level will depend the mobile device and head
unit ring volume and audio settings. If the ringer on the mobile
device is off, you may not hear an incoming ring tone.
Press on the head unit or BTM60 to receive a call. The phone
icon will illuminate solid.
To refuse an incoming phone call, press and hold MUTE for 
seconds.
The head unit will display the elapsed time of the phone call.
The rotary encoder will adjust the volume of the call.
Press MUTE to select between microphone on (MIC ON) and
microphone off (MIC OFF).
To transfer the phone call between the head unit and the mobile
device, press and hold DISP for  seconds during a call. Tip:
transfer audio to your mobile device before turning the head unit
off.
When a second call is incoming, press
The current call will be placed on hold, and the second call will be
active. Press again to return to the first call.
Hold MUTE for  or more seconds to end a call.
If the phone call was received, the head unit will return to previous
mode when call is ended.
XHD6425 OPERATION
Operation (Optional)
®
Description
to begin dialing.
, then press a
to activate call waiting.