User's Manual
Table Of Contents
    P a g e  | 38  
GXW42xx User Manual 
Version 1.0.5.43 
Layer 2 QoS 802.1p Priority 
Value for SIP signaling 
Value used for layer 2 802.1p Priority Value for SIP signaling.  
Default setting is 0. 
Layer 2 QoS 802.1p Priority 
Value for RTP media 
Value used for layer 2 802.1p Priority Value for RTP media.  
Default setting is 0. 
STUN Settings 
Use STUN 
Enable STUN. Default is No. 
STUN server 
The IP address or Domain name of the STUN server. Only non-
symmetric NAT routers work with STUN. 
Number of STUN Response 
Misses Allowed 
The Number of STUN response misses allowed before restarting DHCP. 
The minimum is 3 misses. 
Keep-Alive Interval 
Specifies in seconds how often the phone sends a blank UDP packet to 
the SIP server in order to keep the "ping hole" on the NAT router to 
open. The default is 20 seconds. 
Firewall Setting 
Black List for WAN Side Port 
allows users to block access for specific IP address. 
Reply to ICMP 
This feature allows users to Enable/Disable ICMP response 
Upgrade and Provisioning 
Lock Keypad Update 
If set to “Yes”, the configuration update via keypad is disabled. 
Firmware Upgrade and 
Provisioning 
Specifies how firmware upgrading and provisioning request to be sent. 
There  are  three  options  to  choose  from:  “Always  Check  for  New 
Firmware”,  “Check  New  Firmware  only  when  F/W  pre/suffix  changes”, 
and “Always Skip the Firmware Check”. 
XML Config File Password 
The password used for encrypting the XML configuration file using Open 
SSL. This is required for the phone to decrypt the encrypted XML 
configuration file. 
HTTP/HTTPS User Name 
The user name needed to authenticate with the HTTP/HTTPS server. 
HTTP/HTTPS Password 
The password needed to authenticate with the HTTP/HTTPS server. 










