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284 Universal Network Terminal TAU-72.IP/TAU-36.IP
2. Autoupdate and firmware version check operation algorithm
During TAU-72.IP/TAU-36.IP startup, and upon the expiry of 'Firmware update interval' timeout or when
'Firmware update time' is coming, the gateway checks for the version description file (tau.versions) at the specified
path on TFTP server. If the configuration file is present, TAU-72.IP/TAU-36.IP will download it. This file contains
information on versions of firmware files located at TFTP server as well as their paths and names. If versions of
firmware located on server differ from the current ones (used by the gateway), the gateway checks for active call
sessions. If there are no active call sessions, TAU-72.IP/TAU-36.IP will download firmware files with versions defined
in tau.versions file. When download finishes, the gateway firmware will be updated; otherwise, 10 seconds timeout
will be activated. When this timeout expires, the gateway checks again for active call sessions.
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