DP752/DP730/DP722 Administration Guide
Version 1.0.11.4
Specifies primary IP address where the base sends DNS query to, when “Use
Configured IP” is selected for DNS mode.
Specifies backup IP 1 address where the base sends DNS query to, when “Primary
IP” is not responding.
Specifies backup IP 2 address where the base sends DNS query to, when “Backup
IP 1” is not responding.
Enables/disables NAT traversal mechanism. If activated (by choosing “STUN”) and
a STUN server is also specified (Maintenance → Network Settings → STUN
Settings); the base performs according to STUN client specification.
Under this mode, embedded STUN client will detect if and what type of firewall/NAT
is being used. If detected NAT is a Full Cone, Restricted Cone, or a Port-Restricted
Cone, the base will use its mapped public IP address and port in all of its SIP and
SDP messages. If NAT Traversal field is set to “Keep Alive”, the base will
periodically (every 20 seconds) send a blank UDP packet (with no payload data) to
SIP proxy to keep the “ping hole” on the NAT open.
Defines NAT IP address used in SIP/SDP messages. It should only be used if
required by ITSP.
Determines a SIP Extension to notify the SIP server that the base is behind a
NAT/Firewall.
Selects transport protocol for SIP packets; UDP or TCP or TLS. Make sure your
SIP server or network environment supports SIP over the selected transport
method. Default is UDP.
Controls whether to send SIP REGISTER messages to the proxy server. Device
may not be able to make/receives calls if disabled. Default is Yes.
Controls whether to clear SIP user’s information by sending un-register request to
the proxy server. The un-registration is performed by sending a REGISTER
message with “Contact” header set to * and Expires=0 parameters to the SIP
server. This will unregister all SIP accounts under concerned Profile. Default is Yes.
Add Auth Header
on Initial REGISTER
Adds “Authentication” header with blank “nonce” attribute in the initial SIP
REGISTER request. Default is No.