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V100 User Guide YML749Rev1
24 www.netcomm.com.au
STUN Tab
Clicking on the STUN tab displays the following:
STUN stands for Simple Traveral of UDP over NAT. It is a protocol which enables your IP phone to
detect the presence and type of NAT behind which the phone is placed. STUN will allow SIP
signalling and bi-directional conversation to successfully traverse a NAT without requiring any
configuration changes on the NAT.
STUN IP or Domain Name: The STUN server's IP address or domain name usually provided
by your service provider. Please call your VoIP service provider
to enquire about this setting.
Port No.: The port used to communicate with the STUN server. Default:
3478.