User's Manual

FIRMWARE VERSION 1.0.0.2 GXW42XX USER MANUAL Page 37 of 52
Map to FXO Port#
This is used only when peering with a Grandstream GXW410x. Default is 1,
Supported values are 1-8, meaning line 1 to line 8 of the GXW410x device where the
port will be mapped to.
Map to FXO Gateway IP
This is used when peering with an FXO gateway of any brand. You have to specifically
mention the IP and sip port where the call will be sent to.
and Port
Sip port that will be annexed to the IP address above.
TABLE 11: PROFILE SETTINGS
Profile Active
When set to Yes the SIP Profile is activated.
Primary SIP Server
Primary SIP Server’s IP address or Domain name provided by VoIP service provider.
Failover SIP Server
Failover SIP Server’s IP address or Domain name provided by VoIP Service provider.
This server will be used if the Primary SIP server becomes unavailable.
Prefer Primary SIP
Server
Default is no. If set to yes it will register to Primary Server if registration with Failover
server expires
Outbound Proxy
IP address or Domain name of Outbound Proxy, or Media Gateway, or Session Border
Controller. Used by GXW42XX for firewall or NAT penetration in different network
environments. If symmetric NAT is detected, STUN will not work and ONLY outbound
proxy can correct the problem.
SIP transport
User can select UDP or TCP or TLS. Please make sure you’re SIP Server or network
environment supports SIP over the selected transport method. Default is UDP.
NAT Traversal
This parameter defines whether the GXW42XX NAT traversal mechanism is activated or
not. If activated (by choosing “Yes”) and a STUN server is also specified, then the
GXW42XX performs according to the STUN client specification. Under this mode, the
embedded STUN client will detect if and what type of firewall/NAT is being used. If the
detected NAT is a Full Cone, Restricted Cone, or a Port-Restricted Cone, the GXW42XX
will use its mapped public IP address and port in all of its SIP and SDP messages.
If the NAT Traversal field is set to “Yes” with no specified STUN server, the GXW42XX
will periodically (every 20 seconds) send a blank UDP packet (with no payload data) to
the SIP server to keep the “hole” on the NAT open.