User's Manual

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GXW42xx User Manual
Version 1.0.5.43
Backup IP 2
Configures the backup IP 2 address where the phone sends DNS query
to when "Use Configured IP" is selected for DNS mode.
NAT Traversal
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.
Use NAT IP
The NAT IP address used in SIP/SDP messages. It should ONLY be
used if required by your ITSP.
Proxy-Require
A SIP Extension to notify the SIP server that the phone is behind a
NAT/Firewall.
SIP Settings - Basic Settings
SIP transport
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.
SIP Registration
This parameter controls whether the GXW42XX needs to send
REGISTER messages to the proxy server. The default setting is “Yes”.
Unregister on Reboot
Default is No. If set to “Yes”, the SIP user’s registration information is
cleared on reboot.
Add Auth Header on Initial
REGISTER
Default is No. If set to “Yes”, an Authentication Header with blank nonce
will be added in the initial REGISTER.
Outgoing Calls Without
Registration
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