User's Manual
Grandstream Networks, Inc. GXV3140 USER MANUAL  Page 33 of 83 
 FIRMWARE VERSION 1.0.1.18 Updated : 09/2009 
to a telephone number or an actual telephone number. 
Authenticate ID  The authenticate ID for the SIP user. It can differ or be the same as the SIP user 
ID. 
Authenticate password  The password that the GXV uses to authenticate with the ITSP (SIP) server. 
After it is saved, this will appear as blank for security reasons. The maximum 
length is 25 characters. 
Voice Mail UserID  When this is configured, the user can dial to the voicemail server using the 
MESSAGE button. This ID is normally the feature code for Voice Mail. 
Name  The Caller ID that will be displayed for the account. 
User ID is phone 
number: 
If the Video phone has an assigned PSTN number, this field should be set to 
“YES”. Otherwise, set it to “NO”. If “YES” is set, a “user=phone” parameter will 
be attached to the “From header” in the SIP request to indicate the E.164 
number. 
Account/Network Settings 
Outbound Proxy   
IP address or Domain name of the Outbound Proxy, or Media Gateway, or 
Session Border Controller. Used by the GXV3140 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. 
DNS Mode  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. 
NAT Traversal  This setting decides whether the NAT traversal mechanism is activated. If it is set 
to “Yes” and STUN server is configured, the GXV3140 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(STUN)” is configured to be “No, but 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 an outbound proxy server is used, 
please configure this to be “NO”. 
Proxy Require  Notifies the SIP server that the unit is behind a NAT/Firewall. 










