NAT
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Click NAT to expand and configure the following.
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In STUN Server Address: Port, enter the STUN Server Address and the Listening Port of the STUN
Server.
STUN (Simple Traversal of UDP through NAT) server facilitates the traversing through most of the
NATs, except the symmetric NATs. Configure this only when SARVAM UMG is located behind a NAT
router which is not symmetric.
The STUN Server Address can have maximum 40 characters.
Valid range is 1024 to 65535. Default: 3478.
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Clear the Use SIP Port Fetched using STUN check box, if SARVAM UMG is located behind the NAT
router and you have forwarded the SIP Listening Port of the SARVAM UMG in the router.
Keep the SIP Port fetched using STUN check box enabled, if you have not forwarded the SIP
Listening Port in the router.
Make sure you have selected NAT Type as STUN in the SIP Trunk. See
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In Router's Public IP Address, enter the public IP address of the NAT router behind which the system
is located. Default: Blank.
Configure this only when the system is located behind the NAT router and a Static IP Address is
assigned as the Public IP Address of the Router.
Make sure you have selected NAT Type as Router's IP Address in the SIP Trunk. See
Profile".
•
Select the UDP NAT Keep Alive check box, if you want NAT Keep Alive messages to be sent to
refresh the binding in the NAT router when SARVAM UMG is connected behind a NAT router and the
SIP messages are transported over UDP. Default: Disabled.
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Select the type of Keep Alive Message to be sent. You can select — REGISTER or NOTIFY as per
your requirement. Default: NOTIFY.
Matrix SARVAM UMG System Manual
"SIP Network Profile".
"SIP Network
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