User manual

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¾ STUN NAT Transverse：STUN NAT Transverse status true or false.
¾ STUN Server Addr: configure stun server address.
¾ STUN Server Port: configure stun server port default 3478.
¾ STUN Effect Time: stun detect NAT type interval time .If NAT found a link
inactive for a certain time , it will close the link so you need to send a
packet within a interval tome to keep the link alive.
¾ Local SIP Port: config local SIP port, default as 5060.
¾ Use Stun：enable/disable SIP STUN.
o Attention： SIP STUN is used for NAT transverse. When you config
STUN server’s address and port (default 3478) and enable it, then
you can use the normal SIP server to make the IP phone transverse
NAT.
¾ No Answer Time: no answer call forward time setting.
¾ No Disturb: DND, do not disturb, when there is an incoming call , the caller
will get the message that this line is not available , but you it has no
affection when you make outgoing call.
¾ Ban Outgoing: Enable this to ban outgoing calls.