D-Link DPH-120S Answering Machine User Manual


 
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7.11 STUN Setting – STUN Server Setting, UPnP Setting
STUN
Simple Traversal of User Datagram Protocol through
Network Address Translators is a protocol that allows
applications to determine the types of NATs and firewalls
are in between them and the internet. STUN also provides
the ability for applications to determine the public IP
addresses allocated to them by the NAT.
STUN Domain Name/IP
Address
Enter STUN domain name or IP address if STUN is
enabled.
UPnP
Enable or disable universal plug and play. Some NAT
supports UPnP so STUN is not required and must be
disabled.