2N Helios IP Configuration Manual page 111

Static IP address – static IP address of the intercom, which is used together
with the below mentioned parameters if the Use DHCP Server parameter is
disabled.
Network mask – network mask.
Default gateway – address of the default gateway, which provides
communication with off-LAN equipment.
Primary DNS – primary DNS server address for translation of domain names to
IP addresses.
Secondary DNS – secondary DNS server address, which is used in case the
primary DNS is inaccessible.
802.1x
Device identity – username (identity) for authentication via EAP-MD5 and
EAP-TLS.
MD5 authentication enabled – enable authentication of network devices via
the 802.1x EAP-MD5 protocol. Do not enable this function if your LAN does not
support 802.1x. If you do so, the intercom will become inaccessible.
Password – enter the access password for EAP-MD5 authentication.
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