4G680V2.0 
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3.5 LAN 
3.5.1 LAN 
You can configure the LAN port parameters here. 
IP Address: Set LAN IP address of the router. 
IP Subnet Mask: Set subnet mask of the router. 
 
 
3.5.2 DHCP 
You can configure the DHCP Settings parameters here. 
Starting IP Address & Ending IP Address: The IP range obtained through DHCP by LAN host. 
Lease Time: The time limit for the IP address configuration information obtained by the  client 
device at the DHCP server 
 
 
3.6 SMS 
When using SIM card to access network, you could also send text messages at the time. You 
can send, receive, reply , forward, and save test messages. You can send 10 text messages at the 
same time, SMS number intervals with a semicolon. Also you can setting the storage location of 
messages, and so on. We can operating the SMS in this page.