FIRMWARE 1.0.4.4 GXW42XX USER MANUAL PAGE 42 OF 57
This parameter defines whether the GXW42XX NAT traversal mechanism is activated or not. If
activated (by choosing “STUN”) and a STUN server is also specified, then the GXW42XX
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 GXW42XX 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 “STUN” with no specified STUN server, the GXW42XX will
periodically (every 20 seconds) send a blank UDP packet (with no payload data) to the SIP
server to keep the “hole” on the NAT open.
The NAT IP address used in SIP/SDP messages. It should ONLY be used if required by your
ITSP.
A SIP Extension to notify the SIP server that the phone is behind a NAT/Firewall.
SIP Settings - Basic Settings
User can select UDP or TCP or TLS. Please make sure you’re SIP Server or network
environment supports SIP over the selected transport method. Default is UDP.
This parameter controls whether the GXW42XX needs to send REGISTER messages to the
proxy server. The default setting is “Yes”.
Default is No. If set to “Yes”, the SIP user’s registration information is cleared on reboot.
Outgoing Calls
Without
Registration
Default is No. If set to “Yes,” user can place outgoing calls even when not registered (if
allowed by Internet Telephone Service Provider) but is unable to receive incoming calls.
Any port, member of a Hunting Group that is not registered with a SIP account, will be able to
place outbound calls using the SIP credentials of the primary Hunting Group port.
For example: Port 1, 3 and 5 are members of the same Hunting Group. Port 1 is registered
with a SIP account. Ports 3 and 5 are not registered. Ports 3 and 5 will be able to place
outbound calls using the SIP account of port 1, even if Outgoing Call without Registration is
set to No
Allows the user to specify the time frequency (in minutes) for the GXW42XX to refresh its
registration with the specified registrar. The default interval is 60 minutes (or 1 hour). The
maximum interval is 65535 minutes (about 45 days).
SIP Registration
Failure Retry Wait
Time
Allows the user to specify the time frequency (in seconds) for the GXW42XX to re-register after
registration failure. The default interval is 20 seconds. The maximum interval is 3600 seconds
(1 hour).
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