Control Module

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Fig 1: Identifying Bluetooth Phone Module (BPM)

Courtesy of VOLVO CARS OF NORTH AMERICA.

The Bluetooth phone module (BPM) has the task of functioning as a wireless link between the vehicle's infotainment system and a cellphone equipped with blue tooth technology.

The Bluetooth phone module (BPM) contains:

A main processor which manages all functionality and logic for the Bluetooth phone module (BPM). The software for the bluetooth phone module (BPM) is also stored here.
Sound processor which manages handsfree sound and generates polyphonic ring signals which are then transmitted on to the integrated audio module (IAM) and audio module (AUD) (only certain versions) via the MOST network.
Internal blue tooth antenna.