Replacing Phone Module (PHM) With VOLVO On Call

In addition to the software for the phone module (PHM) with Volvo On Call functionality, a unique security code is also downloaded with the software. When replacing the phone module (PHM) the security code is retrieved from the Volvo central database. A new phone module (PHM) has a generally known security code. The code is used to unlock the control module, and to program functions and to read off parameters. Unlocking is carried out automatically in the ordering version accessible in VIDA (Volvo scan tool).

After software download the read off parameters are transmitted to the Volvo central database. Information about modification to the customer data for Volvo On Call are then transmitted further from the Volvo central database to the web portal that handles customer data for Volvo On Call. The information is also transmitted to the Volvo On Call Service Center via ftp (File Transfer Protocol).

The unique security code is programmed into the phone module (PHM) during software download.

The following parameters are read off and transmitted to the Volvo central database: 

• GSM number for the subscription
• The security code for the unit (Security access code)
• The PUK code for the internal SIM card for Volvo On Call
• IMEI (International Mobile Equipment Identity), GSM unit serial number
• Version number on the GSM unit software
• Unit type.

Volvo On Call is activated either via software orders or via the keypad on the Infotainment control module (ICM). After the Volvo On Call functionality is activated, the phone module (PHM) will wait for information about the position of the vehicle for 0.5-20 minutes. The position is sent from the Aerial module (ATM) (-2006) or Multimedia module (MMM) (2007-), the MOST network. During this time, the car must be parked outdoors with no large obstacles, which could prevent the Aerial module (ATM) (-2006) or Multimedia module (MMM) (2007-) from establishing contact with the GPS satellites, obscuring it. If the phone module (PHM) is unable to receive a position within this time, the activation sequence will be cancelled. Volvo On Call Plus functionality switches to deactivated. After the phone module (PHM) has obtained the position of the car, the ON CALL button must be held in for at least two seconds to connect a voice call the Volvo On Call Service Center. This call is made to confirm the new vehicle data and to check that Volvo On Call is functioning correctly.

Because of the unique security code and the internal SIM card a phone module (PHM) with Volvo On Call functionality cannot be swapped from one vehicle to another.