Grandstream Networks WP820 Administration Manual page 47

Validate Certification
Configures whether to validate certification chain, when TLS/TCP is configured
Chain 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
Specifies if the phone will check the incoming SIP messages caller ID and CSeq
SIP Messages
headers. If the message does not include the headers, it will be rejected. The
default setting is "No".
Allow Unsolicited Configures whether to dial the number carried by Refer-to after received
REFER 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
• If set to "Enabled", the phone will dial up all numbers carried by SIP REFER.
The default is "Disabled".
Only Accept SIP Answers the SIP request from saved servers when set to "Yes", only the SIP
Requests from requests from saved servers will be accepted; and the SIP requests from the
Known Servers unregistered server will be rejected.
The default setting is "No".
Check SIP User ID Configures the phone to check the SIP User ID in the Request URI of the SIP
for Incoming INVITE 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 Configures the phone to authenticate the SIP INVITE message from the remote
Incoming INVITE party. If set to "Yes", the phone will challenge the incoming INVITE for
authentication with SIP 401 Unauthorized response.
The default setting is "No".
SIP Realm Used for Configure this item to validate incoming INVITE, but you must enable authenticate
Challenge INVITE & incoming INVITE first to make it take effect. You can verify the NOTIFY
NOTIFY information for the provision, including check- sync, resync and reboot, but only
when SIP NOTIFY authentication enabled first to make it take effect.
MOH
Upload Local MOH Loads the MOH (Music on Hold) file to the phone. Click on "Browse" button to
Audio File
upload the music file from local PC. The MOH audio file has to be in .wav or .mp3
format.
authentication, if the authentication failed, then stop dialing.
WP820 Administration Guide
Version 1.0.1.15
P a g e |
47