Settings/Sip/Sip - Grandstream Networks GVC3210 Administration Manual

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Proxy-Require

Settings/SIP/SIP

Parameters
SIP Registration
Unregister Before
New Registration
Register
Expiration (Min.)
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If set to "STUN" and STUN server is configured, the device will periodically send STUN
message to the STUN 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 device.
If the device needs to use OpenVPN to connect to host server, please set it to "VPN".
If the firewall and the SIP device behind the firewall are both able to use UPnP, it can
be set to "UPnP". Both parties will negotiate the port used to allow SIP packets to go
through.
If it is set to "TURN", the protocol is designed to be used as part of the ICE (Interactive
Connectivity Establishment) approach to NAT Traversal.
The default setting is "Keep-alive".
It is used to add the Proxy-require 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.
Descriptions
It is used to set if allowing the device to send SIP Register messages to the
proxy/server. The default setting is "Yes".
It clears the SIP user's registration information when the GVC3210 reboots. The SIP
REGISTER message will contain "Expires: 0" to unbind the connection.
Three options are available:

If it is set to "All", the SIP user's registration information will be cleaned when
the device starts pre-registration after rebooting. The SIP Contact header will
contain "*" to notify the server to unbind the connection.

If set to "Instance", the device only cleans the current SIP user's info.

If set to "No", the device will not unregister the SIP account when rebooting.
The default setting is "Instance".
It is used to configure the time period (in minutes) in which the device refreshes its
registration with the specified registrar. The default setting is 60. The maximum value
is 64800 (about 45 days) and the minimum value is 1 minute.
GVC3210 Administration Guide
Version 1.0.1.21
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