93  VoIP Subscriber Gateways 
 
Changes in this submenu take effect immediately after clicking the 'Apply' button. Device 
reboot is not required. 
To store changes to the operative memory of the device, click the Save Changes button. To store 
settings into the non-volatile memory, click Apply button. 
2.4.10 The ‘Call History’ submenu 
For detailed description of parameter settings, see 2.4.10 The ‘Call History’ submenu. 
Call history saving 
To save ‘voip_history’ history file on local PC, click ‘Download call history file’ button. 
Viewing call history 
Click ‘View call history’ button to view call log of ‘Status/Call history’ section. 
Call history size – maximum number of log records, may take values from 0 to 20,000 strings. 
Enter '0' value to disable call history logging. 
To clear call history, click ' Clean history' button. 
To store changes to the operative memory of the device, click the Save Changes button. To store 
settings into the non-volatile memory, click Apply button. 
 
2.5 The ‘Security’ submenu 
Use ‘Security’ menu to configure firewall (install security level and limit of transit traffic). Menu 
is available for TAU-8.IP-W. 
2.5.1 The ‘General’ submenu 
Use  this  submenu  to  provide required  protection  level.  The  changes  of  the  submenu  will  be 
applied without reboot. 
Security Level: 
-  No  Security  –  incoming  traffic  is  permitted  (from  WAN  to  WLAN),   outputting  traffic 
(from WLAN to WAN) is permitted; 
-  Inbound Security – incoming traffic (from WAN to WLAN) is forbidden, outputting traffic 
(from WLAN to WAN) is permitted; 
Changes  in  this  submenu  take  effect  immediately  after  clicking  the  'Apply'  button.  Device 
reboot is not required.