GW0220
Userguide 2.0 UK
22
4.7.6 SIP2 and STUN configuraton
To show the phone whether has been registered on public server or private server.
To show STUN working state
4.7.6.1 SIP STUN Configuration
STUN can support SIP terminal's penetration to NAT in the inner-net. In this way
，
as long as there is conventional SIP proxy and a STUN server placed in the public
net, it will do; but STUN only supports three NAT modes
：
FULL CONE, restricted,
port restricted.
IF you have stun server .please input stun server address here.
The STUN server default port is 3478
The unit is minute. if you have STUN server .please input interval time for STUN`S
detection on NAT type.