User's Manual
Table Of Contents
- DOCUMENT PURPOSE
- GNU GPL INFORMATION
- CHANGE LOG
- WELCOME
- PRODUCT OVERVIEW
- GXV3240D LCD SETTINGS
- GXV3240D WEB GUI SETTINGS- ACCESS GXV3240D WEB GUI
- SAVING CHANGES
- DEFINITIONS
- TOOLBAR
- STATUS PAGE DEFINITIONS
- ACCOUNT PAGE DEFINITIONS
- ADVANCED SETTINGS PAGE DEFINATIONS
- MAINTENANCE PAGE DEFINATION- MAINTENANCE/NETWORK SETTINGS
- MAINTENANCE/WI-FI SETTINGS
- MAINTENANCE/TIME SETTINGS
- MAINTENANCE/WEB/SSH ACCESS
- MAINTENANCE/UPGRADE
- MAINTENANCE/SYSLOG
- MAINTENANCE/LOGCAT
- MAINTENANCE/DEBUG
- MAINTENANCE/LANGUAGE
- MAINTENANCE/TR-069
- MAINTENANCE/CONTACTS
- MAINTENANCE/LDAP BOOK
- MAINTENANCE/BROADSOFT
- MAINTENANCE/DEVICE MANAGER
 
 
- UPGRADING AND PROVISIONING
- FACTORYRESET
- EXPERIENCING THE GXV3240DAPPLICATION PHONE
Firmware Version 1.0.1.54 
GXV3240D Administration Guide 
Page 39 of 83 
If set to "STUN" and STUN server is configured, the phone  will route 
according to the STUN server. If NAT type is Full Cone, Restricted Cone 
or Port-Restricted Cone, the phone will try to use public IP addresses 
and port number in all the SIP&SDP messages. The phone will send 
empty SDP packet to the SIP server periodically to keep the NAT port 
open if it is configured to be "Keep-alive". Configure this to be "NAT NO" 
if an outbound proxy is used. "STUN"  cannot be used if the detected 
NAT is symmetric NAT. Set this to "VPN" if OpenVPN is used. 
Proxy-Require 
A  SIP  Extension  to  notify  the  SIP  server  that  the  phone  is  behind  a 
NAT/Firewall.  Do  not  configure  this  parameter  unless  this  feature  is 
supported on the SIP server. 










