Adjusts the volume of the audio from the speakerphone and ringer.
Mutes the microphones during calls and conferences.
Wakes the system when it detects user movement nearby.
Select items and navigate menus on the touch-sensitive screen.
Speaker and microphones
Sends your audio to call participants and provides audio output for the
ringer and speakerphone.
Security slot (on back)
Attach a universal security cable lock to your phone so you can secure it
to a desktop.
Opens the Trio settings menu.
Returns to the connected system’s display menu.
Opens the connected system’s menu.
Opens the system display and the Trio dial pad.
Selects a field of displayed data.
Navigates through information and menus on the connected system’s
Calls the entered number.
Ends the active call.
Returns to the Trio controller’s Home screen.
Returns to the previous Trio settings menu.
Using Your Device
Using the dialpad, enter a number then select Dial.
To place a call using Recent Calls, select
Recent Calls from the Home screen or
from the Place a Call screen. Then select a contact and
To answer an incoming call, tap the Answer key on the
Incoming Call screen.
To answer a new call while on an active call, select
Answer to place the current call on hold and answer the
new incoming call. To resume the held call, select
Placing Calls on Hold and Resuming Calls from Hold
To place an active call on hold, select Hold.
To view and resume a held call, select Resume, or from
the Calls screen, select the call to resume and then tap
Initiating Conference Calls
Call the first contact. After they answer, select Add.
Dial another number or select another contact from the
Contacts or Recent Calls list. They will
be added to the conference call once they answer.
To merge an active call and held call together in a conference, select a
held call from the Calls screen. Then select Merge to
join it with the current active call.
Setting Up Your Default Transfer Option
Go to Menu > Settings >
Basic > Preferences. Select
Default Transfer Type and choose your preferred transfer
Performing a Blind Transfer
During a call, select Transfer. Dial a number or select a
contact to transfer to from the Recent Calls or Contacts list. The call
will transfer to the selected contact automatically.
Performing a Consulted Transfer
During a call, select Consult. The current call will be
placed on hold. Dial a number or select a contact to transfer to from the
Recent Calls or Contacts list. When the recipient answers, announce the
call and then select Complete Transfer to transfer the
held caller to their line.
Adjusting the Speaker Ringer Volume
To change the speaker volume during an active call, tap the
Volume Up or Volume Down buttons next to
To change the ringer volume, when the phone is in the idle state, tap on
the Volume Up or Volume Down buttons.