Grandstream Networks HT503 User Manual page 54

Disable Bellcore Style
3-Way Conference
Remove OBP from
Route Header
Support SIP instance
ID
Validate incoming SIP
message
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
Use Privacy Header
Use P-Preferred-
Default is No. you can make a Conference by pressing 'Flash' key. If set to
Yes, you need to dial *23 + second callee number.
Default is No. If set to Yes, the Outbound Proxy will be removed from the
route header.
Default is Yes. If set to Yes, the contact header in REGISTER request will
contain SIP Instance ID as defined in IETF SIP Outbound draft.
Default is No. If set to yes all incoming SIP messages will be strictly
validated according to RFC rules. If message will not pass validation
process, call will be rejected.
Default is No. Check the incoming SIP User ID in Request URI. If they don't
match, the call will be rejected. If this option is enabled, the device will not
be able to make direct IP calls.
Default is No. If set to Yes, device will challenge the incoming INVITE for the
Authenticate ID and Password with 401 Unauthorized.
Default is No. If set to Yes, device will check the server TLS certificate to
ensure that the Common Name matches the configured SIP server
Default is No. If set to Yes, device will check the server TLS certificate to
ensure that it is authorized by a known Certificate Authority
Uses the certificate for Authentication if "Check Domain Certificates" is set to
"Yes"
Default is No. Check the incoming SIP messages. If they don't come from the
SIP proxy, they will be rejected. If this option is enabled, the device will not be
able to make direct IP calls.
If set to Default, it will only add Privacy or PPI header when special feature
is not Telkom SA or CBCOM.
If set to Default, it will only add Privacy or PPI header when special feature
HT503 User Manual
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