SD card specificationsR SDHC or SDXCR Capacity: 4 GB or larger.Formatting the SD cardBefore inserting an SD card into the control box, format the SD card using your computer and the SD formatting toolavailable from the web page listed below.www.sdcard.org/downloads/formatter_4/Note:R If you do not format the card before using it with the control boxInformation may not be logged properly, and new image files may not be able to overwrite old ones.Viewing the system logYou can insert the SD card into a computer and view the log.Note:R If you use a computer to modify the SD card’s files or foldersThe next time you insert the SD card into the control box, the log database will be rebuilt. This can take up to onehour. During this time, no information will be logged.R If you add data to the card using a computer, digital camera, or other deviceInformation may not be logged properly, and new image files may not be able to overwrite old ones.5.8 Upgrading the system software for digital PBXsThe system software saved in the control box can be upgraded.The system is shipped with system software for use with analogue PBXs. If a digital PBX is used, system softwarefor digital PBXs must be downloaded and installed to the control box.Download new system software1. Download the system software update file.R Refer the information on the following web site.http://panasonic.net/pcc/support/intercom/v9002. Copy the update file to the root path of an SD card.Upgrade the system software1. Turn off the control box.2. Insert the SD card containing the update file into the control box.3. While pressing and holding the MFUNCTIONN button, turn on the control box. Do not release the button yet.4. Wait for about 20 seconds until the control box’s MPOWERN and MACCESSN indicators flash quickly, and thenrelease the MFUNCTIONN button.R When the update is complete, the control box’s MACCESSN indicator lights. (This may take about 20 minutes.)Note:R If you have configured or edited the system settings, back up the current configuration files with the following stepsbefore upgrading the system software.1. Back up the currently used configuration files (page 41).2. Upgrade the system software (page 57).3. Upload the configuration files using the Upload the data to device function (page 40) of the setup tool.5.9 Restarting a deviceYou can restart the control box, distribution box, or lift controller by pressing its reset button ( ).5.10 POWER and ACCESS indicatorsYou can use the POWER and ACCESS indicators to check the status of devices.575. Programming