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 by software order or via the keypad on the climate control module (CCM). After activating the Volvo On Call functionality the phone module (PHM) will wait for 0.5-20 minutes for information about the vehicle position. The position is transmitted from the multimedia module (MMM) via the MOST network. The vehicle must be parked outdoors without any screening objects during this period for the multimedia module (MMM) to obtain contact with the GPS satellites. If the phone module (PHM) cannot obtain a position within this time frame the activation sequence will be interrupted. Volvo On Call functionality will go to deactivated. When the phone module (PHM) has obtained the vehicle position the ON CALL button must be held depressed for at least two seconds to connect a call to the Volvo On Call Service Center. This call is made to confirm modified vehicle data and to check that Volvo On Call functions in the correct way.

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.