Matrix Setu ATA211G Spezifikationen PDF herunterladen (Seite 72)

66 Matrix SETU ATA211G System Manual

If you are an ITSP, you may use this flag (disable) to prevent your customers (end users) from setting the

Admin Password to default and gaining unrestricted access to system configuration.

NAT

• STUN (Simple Traversal of UDP through NAT) server facilitates traversing through most NATs, except

symmetric NATs. So, if your router has Symmetric NAT, do not configure STUN.

If your SETU ATA211G is located behind a NAT router that is other than symmetric,

•In the STUN Server Address: Port field, enter the STUN Server Address and the Listening Port of the

STUN Server.

The STUN Server Address can have a maximum of 40 characters.

The valid range of the STUN Server Port is from 1024–65535. Default: 3478.

• Clear the SIP Port fetched using STUN check box, if ATA211G is located behind the NAT router and

you have forwarded the SIP listening port of the ATA211G 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 configure the NAT Type on the SIP Trunk as STUN. See “SIP Trunks”.

• Router's Public IP Address: Router’s public IP address specifies the public IP address of the NAT router

behind which system is located. Default: Blank.

You need to configure this field only if the system is located behind the NAT router and a Static IP Address

is assigned as Public IP Address of the Router.

Make sure you configure the NAT Type on the SIP Trunk as Router’s IP Address. See “SIP Trunks”.

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Matrix Setu ATA211G Spezifikationen Seite 72