Welltech VoIP ATA series V.303 - Manual (Page 110)

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configuration file, Press [Open] button. Return [Reset to Default] web page, make
sure to perform the update, Press [Restore] button (See Figure 3).
(Figure 3)
Step 2: Restore complete, Must save setting and reboot system (See Figure 4), Reboot
system can take effect the [config.db] parameter.
(Figure 4)