IP500 V2/V2A control unit must be fitted with an Avaya System SD card. The default mode of the system is determined by the type of System SD card present. The system can then be configured to the required mode.

The different System SD cards are:

•IP Office U-Law SD Card
A system fitted with this type of card defaults to U-Law telephony and IP Office Basic Edition Key System operation. Intended for North American locales.

•IP Office A-Law SD Card
A system fitted with this type of card defaults to A-Law telephony and IP Office Basic Edition PBX System operation. Intended for locales outside North America.