Grandstream Networks HT801 Administration Manual page 45

Refer-To Use Target Contact
Transfer on Conference
Hang-up
Disable Bellcore Style 3-Way
Conference
Remove OBP from Route
Header
Support SIP Instance ID
Validate Incoming Messages
Check SIP User ID for
Incoming INVITE
Authenticate Incoming
INVITE
Authenticate server
certificate domain
Authenticate server
certificate chain
Trusted CA Certificates
Allow Incoming SIP
Messages from SIP Proxy
Only
Includes target's "Contact" header information in "Refer-To" header when
using attended transfer. Default is No.
If set to "Yes", when the phone hangs up as the conference initiator, the
conference call will be transferred to the other parties so that other parties
will remain in the conference call. Default setting is No.
Gives the users the possibility of making conference calls by pressing
"Flash" key, when it's enabled by dialing *23 +second callee number. Default
is No
Removes outbound proxy info in "Route" header when sending SIP packets.
Default is No.
Includes "SIP Instance ID" attribute to "Contact" header in REGISTER
request as defined in IETF SIP outbound draft.
Default is No.
Validates incoming messages.
Default is No.
Checks SIP User ID in the Request URI of incoming INVITE; if it doesn't
match the HT801/HT802 SIP User ID, the call will be rejected. Direct IP
calling will also be disabled. Default is No.
Challenges the incoming INVITE for authentication with SIP 401
Unauthorized message. Default is No.
Configures whether to validate the domain certificate when download the
firmware/config file. If it is set to "Yes", the phone will download the
firmware/config file only from the legitimate server.
Default setting is "No".
Configures whether to validate the server certificate when download the
firmware/config file. If it is set to "Yes", the phone will download the
firmware/config file only from the legitimate server.
Default setting is "No".
Uses the certificate for Authentication if "Check Domain Certificates" is set
to "Yes" under "Account"→"SIP Settings".
Checks SIP address of the Request URI in the incoming SIP message; if it
doesn't match the SIP server address of the account, the call will be rejected.
Default is No.
HT801/HT802 Administration Guide
Version 1.0.13.7
P a g e | 44