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NAT Traversal
Proxy-Require
SIP Settings
SIP Basic Settings
SIP Registration
Unregister before New
Registration
Specifies which NAT traversal mechanism will be enabled on the device.
It can be selected from the dropdown list:
•
NAT NO
•
STUN
•
Keep-alive
•
Auto
•
OpenVPN
If the outbound proxy is configured and used, it can be set to "NAT NO".
If set to "STUN" and STUN server is configured, the device will periodically
send STUN message to the SUTN server to get the public IP address of
its NAT environment and keep the NAT port open. STUN will not work if
the NAT is symmetric type.
If set to "Keep-alive", the device will send the STUN packets to maintain
the connection that is first established during registration of the device. The
"Keep-alive" packets will fool the NAT device into keeping the connection
open and this allows the host server to send SIP requests directly to the
registered GAC2570.
If it needs to use OpenVPN to connect host server, it needs to set it to
"VPN". The default setting is "Keep-alive".
Adds the Proxy-Required header in the SIP message.
It is used to indicate proxy-sensitive features that must be supported by
the proxy. Do not configure this parameter unless this feature is supported
on the SIP server.
Allows the device to send SIP REGISTER messages to the proxy/server.
The default setting is "Yes".
Controls whether to clear SIP user's information by sending un-register
request to the proxy server.
•
When set to "All", the un-registration is performed by sending a
REGISTER message with "Contact" header set to * and Expires=0
parameters to the SIP server when the device starts pre-registration
after rebooting.
•
If set to "Instance", the device only cleans the current SIP user's info
GAC2570 User Manual
Version 1.0.1.23
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