Design

Design

Phone antenna




The phone antenna is directly connected to the phone module (PHM).
The phone antenna is located in the windshield in front of the rear view mirror.
There are diagnostics for the antenna.

Handset (model year-dependent)




The handset is directly connected to the phone module (PHM). The handset is located in the center console.
The phone module (PHM) determines if the call is to be connected via handsfree or handset from the click signal of the handset. When the handset is in the holder all calls are connected via handsfree. The handset is activated when it is removed from the holder. Note that voice calls do not go via the handset if it is lifted when an incoming call arrives or when an out going call is started using the ENTER button. The handset must be replaced and then lifted again for conversations via the handset. The reason for this is to avoid missing sound when the handset has been lifted accidentally. The click signal to the phone module (PHM) is controlled by a magnetic switch placed in the handset. The switch is closed by the magnet in the handset. When the handset is in the holder the click signal to the phone module (PHM) is 0 V, when the handset is used the signal is 5 V.
There are diagnostics for the handset.

SIM card holder




The holder for the customer's private SIM card is located in the key pad for the infotainment control module (ICM). The SIM card holder is serially connected to the phone module (PHM).
There are diagnostics for the SIM card holder.

Switch for Volvo On Call




The switches for ON CALL and SOS are located in the instrument panel under the switch for the hazard warning signal flashers. The switches are only for the phone module (PHM) with the Volvo On Call functionality.
The switches are directly connected to the phone module (PHM).
Voltage supply and grounding of the switch lighting is via the phone module (PHM). The level of the light strength is adjusted using a pulse width modulated (PWM) signal.
There are diagnostics for the switches.