User's Manual
Table Of Contents
FIRMWARE 1.0.3.4  GXW42XX USER MANUAL  PAGE 31 OF 56 
NAT Traversal 
Shows type of NAT the GXW4248 is connected to via its WAN port. It is based on STUN 
protocol. 
Port Status 
Displays relevant information regarding the individual FXS ports. Example: 
Port  Hook   SIP 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       
FXS4  On Hook  Registered  Yes       615 
FXS…  …  …  …       
TABLE 8: MAINTENANCE 
Network Settings 
IP Address Mode 
Choose how the IP address obtained on the phone. 
Preferred DNS 
Server 
Enter the preferred DNS server that should be used for DHCP and PPPoE. 
DHCP Settings 
Host name (Option 12) 
Specifies the name of the client. This field is optional but may be 
required by Internet Service Providers. 
DHCP Domain 
Specifies the DHCP Domain. This value is optional, but may be 
required by Internet Service Providers. 
Vendor Class ID (Option 
60) 
Used by clients and servers to exchange vendor class ID. 
Static IP Settings 
Configure IP Address, Subnet Mask, Gateway, DNS Server 1, and DNS Server 2. 
QoS Settings 
Layer 3 QoS 
Defines the Layer 3 QoS parameter. This value is used for IP 
Precedence, Diff-Serv or MPLS. 
Layer 2 QoS 
802.1Q/VLAN Tag 
Value used for layer 2 VLAN tag. Default setting is blank. 
Layer 2 QoS 802.1p 
Priority Value 
Assigns the priority value of the Layer 2 QoS packets. Valid range is 
0 to 7. 
STUN Settings 
Use STUN 
Yes or No. Default is No. 
STUN server 
The IP address or Domain name of the STUN server. Only non-
symmetric NAT routers work with STUN. 










