GL-VP-62xx User Manual
Copyright © 2009-2011 GigaLink
Page 24 of 46
PROFILE PAGE DEFINITIONS
Setting Options
Meaning
Account Active
When set to Yes the SIP Profile is activated.
SIP Server
SIP Server
‟s IP address or Domain name provided by
VoIP service provider.
Outbound Proxy
IP address or Domain name of Outbound Proxy, or Media
Gateway, or Session Border Controller. Used by
GL-VP-62XX 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.
NAT Traversal
This parameter defines whether the GL-VP-62XX NAT
traversal mechanism is activated or not. If activated (by
choosing
“Yes”) and a STUN server is also specified, then
the GL-VP-62XX 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 GL-VP-62XX 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 GL-VP-62XX will periodically (every 20
seconds or so) send a blank UDP packet (with no
payload data) to the SIP server to keep the
“hole” on the