User's Manual
FIRMWARE VERSION 1.0.0.2     GXW42XX USER MANUAL      Page 30 of 52 
Port Status 
Displays relevant information regarding the individual FXS ports. Example: 
Port  Hook  Registration DND  Forward  Busy 
Forward 
Delayed 
Forward
FXS1  On Hook Registered
No  613     
FXS2  Off Hook Registered
No    614   
FXS3  On Hook Not 
Registered
No       
…  …  … 
FXS24  On Hook Registered
Yes      615 
 FXS port 24 user has set Do Not Disturb. 
 FXS port 1 user has set his calls to be forwarded unconditionally to ext 613 
 FXS port 2 user has set his calls to be forwarded to 614 when his phone is busy. 
 FXS port 3 user is not registered with his SIP Server. 
Advanced User configuration includes not only the end user configuration, but also advanced 
configurations such as: SIP configuration, Codec selection, NAT Traversal Setting and other 
miscellaneous configuration. 
TABLE 9: ADVANCED SETTINGS 
Admin Password 
Administrator password. Only the administrator can configure the “Advanced Settings” 
page. Password field is purposely left blank for security reasons after clicking update 
and saved. The maximum password length is 25 characters. 
Layer 3 QoS 
This field defines the layer 3 QoS parameter which can be the value used for IP 
Precedence or Diff-Serv or MPLS. Default value is 48. 
Layer 2 QoS  Value used for layer 2 VLAN tag. Default setting is blank. 
STUN Server 
IP address or Domain name of the STUN server. 
STUN server assists devices behind a NAT firewall or a router to set up calls via VoIP. 
STUN server is often provided by the VoIP service provider or a public STUN server 
can be used. For a sample list of public free STUN servers please refer to: 
http://www.voip-info.org/wiki-STUN 
Keep-alive interval 
This parameter specifies the number of seconds after which a new blank UDP packet
will be sent out to the proxy/server port in order to have the port stay open and the 
device remain reachable. Default is 20 seconds. 










