USR-N668 User Manual Technical Support:
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17
AT+WANN
Set and query IP, IP/ subnet mask / gateway parameters
4.1.2. DNS
DNS server address , default master server 208.67.222.222, standby server 8.8.8.8.
DNS server address can be set, can achieve domain name resolution in the case of imperfect local domain name server,
users can also set the address of a specific DNS server according to needs, 668 need domain name resolution will be set
to the DNS server to submit a resolution request.
In the case of DHCP, the domain name server address is automatically acquired.
Figure 16 DNS server
Reference AT command
Table 8 DNS AT command
AT command
Describe
AT+DNS
Set and query DNS server
4.1.3. VPN-PPTP
Support the VPN link of PPTP protocol.
Figure 17 PPTP set
Remote address, user name, password are the basic parameters; there are encryption, authentication and other
parameters can be set.