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VoIP subscriber gateways  39 
 
Local DHCP Server configuration: 
–  Start Address – starting address in the IP address pool; 
–  Pool size – number of addresses in the pool; 
–  Lease time (minutes) – set the maximum time for  IP address lease issued  by DHCP server to the 
connected device, in minutes. 
To save changes, click ‘Save Changes’ button. 
Static IP  address  configuration allows you  rigidly tie  IP  address (transmitted by  DHCP  server) to  client’s 
MAC address. 
To add new static IP address, click ‘Add’ button and fill in the following fields: 
–  MAC Address – set static МАС-address. It is assigned in XX:XX:XX:XX:XX:XX format; 
–  IP Address – set static IP address for assigned MAC address.  
To add IP address into the list with the static IP addresses for DHCP server, click ‘Add’ button. 
To delete address from the list, click ‘Delete’ link against to the selected address.  
Client’s Mac address, IP address extracted from the pool, client name and lease duration of the address 
are specified in the table Active DHCP Leases. 
When you press ‘Enable/disable DHCP Relay’ button, DHCP agent-repeater will be turned off/on. To save 
changes  into  the device  operative  memory, click  ‘Save  Changes’  button. To  record into  non-volatile memory, 
click ‘Apply Changes’. 
3.1.2.5 ‘Local DNS’ (‘Hosts’) submenu 
Use the submenu to configure local DNS server of the device by adding ‘IP address-domain name’ pairs 
into the database.