PLANET ICF-1700 - Manual (Page 106)

Item Description
STUN NAT
Transverse Shows STUN NAT Transverse estimation, true means
STUN can penetrate NAT, while False means not.
STUN Server Addr Set your SIP STUN Server IP address.
STUN Server Port Set your SIP STUN Server IP port.
STUN Effect Time
Set STUN Effective Time. If NAT server finds that a
NAT mapping is idle after time out, it will release the
mapping and the system need send a STUN packet to
keep the mapping effective and alive.
Use Stun Enable / disable SIP STUN.
" Note
SIP STUN is used to realize SIP penetration to NAT. If your phone
configures STUN Server IP and Port (default is 3478), and enable SIP Stun,
you can use the ordinary SIP Server to realize penetration to NAT.
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