Administration Guide

P a g e | 50
WP820 Administration Guide
Version 1.0.5.5
Account/Advanced Settings
Security Settings
Check Domain
Certificates
Defines whether the domain certificates will be checked when TLS/TCP is used
for SIP Transport. The default setting is "No".
Validate Certification
Chain
Configures whether to validate certification chain, when TLS/TCP is configured
for SIP Transport. If this is set to “Yes”, phone will validate server against the new
certificate list. The default setting is “No”.
Validate Incoming SIP
Messages
Specifies if the phone will check the incoming SIP messages caller ID and CSeq
headers. If the message does not include the headers, it will be rejected. The
default setting is "No".
Allow Unsolicited
REFER
Configures whether to dial the number carried by Refer-to after received Out-of-
dialog SIP REFER request actively.
• If set to "Disabled", the phone will send error warning and stop dialing.
• If set to "Enabled/Force Auth", the phone will dial the number after send
authentication, if the authentication failed, then stop dialing.
• If set to "Enabled", the phone will dial up all numbers carried by SIP REFER.
The default is “Disabled”.
Only Accept SIP
Requests from Known
Servers
Answers the SIP request from saved servers when set to “Yes”, only the SIP
requests from saved servers will be accepted; and the SIP requests from the
unregistered server will be rejected.
The default setting is “No”.
Check SIP User ID for
Incoming INVITE
Configures the phone to check the SIP User ID in the Request URI of the SIP
INVITE message from the remote party. If it doesn't match the phone's SIP User
ID, the call will be rejected. The default setting is “No”.
Allow SIP Reset
Configures if allow SIP Notification message to perform factory reset.
The default setting is "No".
Authenticate
Incoming INVITE
Configures the phone to authenticate the SIP INVITE message from the remote
party. If set to "Yes", the phone will challenge the incoming INVITE for
authentication with SIP 401 Unauthorized response.
The default setting is "No".