Use Actual
Ephemeral Port
in Contact with
TCP/TLS
Enable to use actual ephemeral port in contact with
TCP/TLS. Default is “No”.
Check Domain
Certificates
Enable to check the domain certificate. Default is “No”.
Remove OBP
from Route
The SIP Extension notifies the SIP server that it is behind a
NAT/firewall.
Validate
Incoming
Messages
This configuration selects whether or not the incoming
messages should be validated.
Support SIP
Instance ID
Selects whether or not SIP Instance ID is supported.
NAT Traversal
This parameter activates the NAT traversal mechanism. It
has options: No, STUN, Keep-Alive, UPnP, Auto, VPN.
If selecting STUN and a STUN server is also specified, the
phone performs according to the STUN client specification.
Using this mode, the embedded STUN client detects if and
what type of NAT/Firewall configuration is used. If the
detected NAT is a Full Cone, Restricted Cone, or a Port-
Restricted Cone, the phone will use its mapped public IP
address and port in all of its SIP and SDP messages.
If selecting Keep-Alive with no specified STUN server, the
ZXV10 P802L will periodically (every 20 seconds or so)
send a blank UDP packet (with no payload data) to the SIP
server to keep the “hole” on the NAT open.
SUBSCRIBE
for MWI
Default is “No”. When set to “Yes”, a SUBSCRIBE for
Message Waiting Indication will be sent periodically.
SUBSCRIBE
for Registration
Default is “No”. When set to “Yes” a SUBSCRIBE for
Registration will be sent periodically.
