Grandstream Networks GXV3275 Administration Manual page 64

STUN Server
Use NAT IP
SIP TLS Certificate
SIP TLS Private Key
SIP TLS Private Key Password
Firmware Version 1.0.3.6
It is used to configure the URI of STUN (Simple Traversal of UDP for
NAT) server. The phone system will send STUN Binding Request packet
to the STUN server to learn the public IP address of its network. Only
non-symmetric NAT routers work with STUN. The default setting is
"stun.ipvideotalk.com".
It is used to configure the IP address for the Contact header and
Connection Information in the SIP/SDP message. It should ONLY be
used if it's required by your ITSP. The default setting is keep the box
blank.
It is used to fill in the SSL certificate used for SIP TLS Transport.
It is used to fill in the SSL Private key used for SIP TLS Transport.
It is used to fill in the SSL Private key password used for SIP TLS
Transport.
GXV3275 Administration Guide Page 62 of 103