Unicorn 3112 User Manual
Copyright © 2008
Hanlong Technology Co., Ltd
Page 24 of 42
6.1.6.4
FXS Port Settings:
FXS PORT SETTING
Setting Options
Meaning
Account Active:
Set to the YES, the account can be available
SIP Server
SIP Server’s URI or IP address
Outbound Proxy
SIP Outbound Proxy Server’s URI or IP address
NAT Traversal
This parameter defines whether the Unicorn 3112 NAT
traversal mechanism will be activated or not. If activated
(by choosing “Yes”) and a STUN server is also specified,
then the Unicorn 3112 will behave according to the STUN
client specification. Under this mode, the embedded
STUN client inside the Unicorn 3112 will attempt to detect
if and what type of firewall/NAT it is sitting behind through
communication with the specified STUN server. If the
detected NAT is a Full Cone, Restricted Cone, or a
Port-Restricted Cone, the Unicorn 3112 will attempt to
use its mapped public IP address and port in all its SIP
and SDP messages. If the NAT Traversal field is set to
“Yes” with no specified STUN server, the Unicorn 3112
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 NAT open.
SIP User ID
SIP service subscriber’s User ID
Authenticate ID
SIP service subscriber’s Authenticate ID. Can be identical
