Account/Sip Settings - Grandstream Networks WP820 Administration Manual

NAT Traversal
Proxy-Require

Account/SIP Settings

SIP Basic Settings
SIP Allows the phone to send SIP REGISTER messages to the proxy/server.
Registration 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
Unregister un-registration is performed by sending a REGISTER message with "Contact" header set to * and Expires=0 parameters
before New to the SIP server when the phone starts pre-registration after rebooting. If set to "Instance", the phone only cleans the
Registration current SIP user's info by sending REGISTER message with "Contact" header set to concerned SIP user's info and
Expires=0 parameters to the SIP server. The default setting is "Instance".
Register
Configures the time period (in minutes) in which the phone refreshes its registration with the specified registrar. The
Expiration
default setting is 60. The maximum value is 64800 (about 45 days).
(m)
Subscribe
Specifies the frequency (in minutes) in which the phone refreshes its subscription with the specified register. The
Expiration
maximum value is 64800(about 45 days).
(m)
Re-register Specifies the time frequency (in seconds) that the phone sends re-registration request before the Register Expiration. The
before default setting is 0. The range is from 0 to 64800.
will keep contacting this responding IP until DNS timeout (30
minutes) before starting over.
● Saved one until no response (Stay on responding IP until its
failure): On this mode, the phone will send SIP requests to the
last responding IP, and it does not failover/switchover to the
next one until this responding server is down.
Note: WP820 now supports failover and redundancy requests
coming from Cisco/BW systems.
Specifies which NAT traversal mechanism will be enabled on the
phone. 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 phone 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 phone will send the STUN packets to
maintain the connection that is first established during registration
of the phone. 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 phone.
If it needs to use OpenVPN to connect host server, it needs to set it
to "OpenVPN". The default setting is "NAT NO".
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.
Table 12: Account/General Settings