1600 and 9600 Series H.323 IP Telephones support using an HTTP server as the location to which they can backup and restore user-specific data. The address for this backup server is set separately from that of the file server used for phone firmware.

These options are used if the location of the HTTP server for backup/restore has been specified in the phone 46xxsettings.txt file.

Backup is used when the phone user logs out of the phone. During the log out process, the phone creates a file containing the user specific data and sends that to the BRURI location. The file is named with the user's extension number as a prefix to _16xxdata.txt; for example, 299_16xxdata.txt.

Restore is used when a user logs in at the phone. The phone sends a file request for the appropriate file based on the user's extension number. If the file is successfully retrieved the phone will import the settings and, after a Retrieval OK message, continue as normal. If the file cannot be retrieved, a Retrieval failed message is displayed and the phone will continue with its existing settings.