DWR-921 4G LTE Router
User Manual
Configuring via Web-based Interface
Parameter Description
Timeout
A   time   period   (in   seconds)   allocated  for   a   respond   to   one  ping
request. By default, the value 3 is specified.
Connection restart
Move   the   switch   to   the   right   to   reestablish   connection   if   the
maximum number of ping requests fails.
Addresses
IP addresses from the external network that the router will check for
availability   via   ICMP   ping   mechanism.   By   default,   the   router
checks the IP address 8.8.8.8.
Click the ADD button, and in the line displayed, enter an IP address
or  leave   value  suggested   by   the   router.   You   can   add   several
addresses.
To remove an IP address from the list, click the Delete button 
( ) in the line of the address. 
Modem IP address
verification
Move the switch to the right to let the router request the actual IP
address from the modem in case modem's IP address changes before
expiration of the previous one.
When all needed settings are configured, click the APPLY button.
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