Offer Ice; Stun Server (Ip-Addr:port); Stun Binding Interval (Seconds) - Snom 360 Manual

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NAT LINE SETTINGS

Offer ICE

Choose whether you want to use ICE (Interactive Connectivity
Establishment) or not. ICE optimizes the media path. For example in a
case of two phones in the same network are calling each other via a
really long media path via other external networks. It would make much
more sense to choose the short media path, which is only in the same
network, rather then the long one, with assumed less good quality in
comparison to the shorter media path etc. Sometimes this features
brakes the whole ability to make calls, than switch it "off".

STUN Server (IP-addr:port)

We re-introduced a STUN keep-alive mechanism for SIP, which can be
turned on manually by specifying the address of the STUN server
followed by the port number. But we strongly discourage from using
that, because it will not work properly with symmetrical NAT (i.e. Linux
based router/firewall). The only general SIP NAT solution is a session
border controller (SBC) at the service provider's side.

STUN Binding Interval (seconds)

Similarly, set the STUN binding interval time in seconds through this
setting.
RTP LINE SETTINGS
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