Fanvil C58 User Manual page 30

Choose Static IP MODE, click【NEXT】can config the network and
SIP(default SIP1)simply, also can browse too. Click【BACK】can return to
the last page.
IP Address
Subnet Mask
IP Gateway
DNS Domain
Primary DNS
Secondary DNS
Input the IP address distributed to you.
Input the Netmask distributed to you.
Input the Gateway address distributed to you.
Set DNS domain postfix. When the domain which you
input cannot be parsed, phone will automatically add
this domain to the end of the domain which you input
before and parse it again.
Input your primary DNS server address.
Input your standby DNS server address.