Grandstream Networks GXV3175-T User Manual page 48

Name
Tel URI
Account/Network Settings
Outbound Proxy
DNS Mode
NAT Traversal
Proxy Require
Account/SIP Settings
SIP Registration
Unregister On Reboot
Register Expiration (m)
Grandstream Networks, Inc.
The Caller ID that will be displayed for the account.
The default setting is "Disable". If the Video phone has an assigned PSTN
number, this field should be set to "Enable". If "User=Phone" is set, a
"User=Phone" parameter will be attached to the "From header" in the SIP
request to indicate the E.164 number.
IP address or Domain name of the Outbound Proxy, or Media Gateway, or
Session Border Controller. Used by the GXV3175 for firewall or NAT
penetration in different network environments. If a symmetric NAT is
detected, STUN will not work and ONLY an Outbound Proxy will work.
The default is set to A Record. If the user wishes to locate the server by DNS
SRV, the user may select SRV or NATPTR/SRV.
This setting decides whether the NAT traversal mechanism is activated. If it
is set to "STUN" and STUN server is configured, the GXV3175 will route
according the STUN server. In this mode, the STUN client embedded in the
phone will communicate with the appointed STUN server to examine which
type of Firewall/NAT setting is employed. If the type of NAT detected is Full
Cone, Restricted Cone or Port-Restricted cone, the phone will try to use
public IP addresses and port in all the SIP and SDP messages.
If the "NAT Traversal" is configured to be "Keep-alive", the phone will send
an empty SDP packet (without payload data) to the SIP server once in 20
seconds to keep the NAT port open.
If VPN is used, users should select "VPN" for NAT Traversal.
Users could also set "Auto" or "UPnP" according to the network
configuration.
If an outbound proxy server is used, please configure this to be "NAT NO".
Notifies the SIP server that the unit is behind a NAT/Firewall.
Selects whether or not the GXV3175 will send a SIP Register message to
the proxy; The default setting is YES.
If set to YES, the SIP user registration messages will be cleared on reboot.
The default setting is YES.
This defines the expiration time of the registration in minutes. The default
value is 50 minutes; the maximum value is 65535 minutes (approximately
45 days) and the minimum value is 5 minutes.
GXV3175 USER MANUAL
FIRMWARE VERSION 1.0.1.1
Page 48 of 60
Updated : 3/2012