User Manual NRP1000 Series IP Phone
5-24 www.newrocktech.com
Figure 5-17 Stun setting interface
Table 5-15 Stun parameters setting
Name Description
Simple Traversal of UDP through NATs (STUN) Settings
STUN NAT
Traversal
Shows STUN NAT Transverse estimation, true means STUN can penetrate NAT,
while False means not.
Server Address
Sets the IP address of a SIP STUN server.
Server Port
Sets the port of a SIP STUN server.
Blinding Period
Sets the interval at which the STUN server identifies the NAT type. If the NAT server
finds that a NAT mapping is idle after a certain period of time, it will release the
mapping. Therefore, the system needs to send a STUN packet to keep the mapping
effective and alive.
SIP Waiting Time
Specifies the time the SIP server waits for a response from the STUN server. You can
set the value according to your network condition.
Local SIP Port
Specifies the local SIP Port. The default value is 5060. Note that this port takes effect
immediately after being configured. If modified, the SIP server will use the new port
for communication.
Sip Line Using STUN
SIP n
Choose line to set info about SIP, There are 6 lines available.
Use STUN
Enables/Disables the SIP STUN function.
SIP STUN is used to realize the SIP penetration to NAT. If you configure the IP address and
port(which defaults to 3478) of the STUN server , and enable SIP STUN on the phone, you can
use an ordinary SIP server to realize penetration to NAT.
