Grandstream Networks GVC3210 Administration Manual page 43

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RTP IP Filter
Support SIP
Instance ID
Validate Incoming
SIP Messages
Check SIP User
ID for Incoming
INVITE
Authenticate
Incoming INVITE
SIP Realm Used
for Challenge
INVITE & NOTIFY
Only Accept SIP
Requests from
Known Servers
https://arttel.ru/shop/terminaly-vks/grandstream-gvc3210
It is used to configure whether to filter received RTP packets. The options are
"Disable", "IP Only" and "IP and Port". The default setting is "Disable".
This setting can be used with "Symmetric RTP". Please see below:

Symmetric RTP = No, RTP IP Filter = Disable
The device sends RTP packets to the IP:Port included in SDP and accepts RTP
packets from any address.

Symmetric RTP = Yes, RTP IP Filter = Disable
The device sends RTP packets to the IP:Port where the RTP packets come from
and accepts RTP packets from any address.

Symmetric RTP = No, RTP IP Filter = IP Only
The device sends RTP packets to the IP:Port included in SDP and only accepts
RTP packets from the IP in the SDP.

Symmetric RTP = Yes, RTP IP Filter = IP Only
The device sends RTP packets to the IP:Port where the RTP packets come from
and only accepts RTP packets from the IP in the SDP.

Symmetric RTP = Yes, RTP IP Filter = IP and Port
The device only sends RTP packets to the IP:Port included in SDP and only
accepts RTP packets from the IP:Port in the SDP.
It is used to set if the device will send SIP Instance ID. The SIP instance ID is used to
uniquely identify the device. If set to "Yes", the SIP Register Message Contact header
will include +SIP.instance tag. The default setting is "Yes".
It is used to set if the device 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".
It is used to set if the device will check the SIP User ID in the Request URI of the SIP
INVITE message from the remote party. If it doesn't match the SIP User ID configured
on the device, the call will be rejected. If set to "Yes", this feature will be active. The
default setting is "No".
It is used to set if the device will authenticate the SIP INVITE message from the remote
party. If set to "Yes", the device will challenge the incoming INVITE for authentication
with SIP 401 Unauthorized response. The default setting is "No".
This is used to verify incoming INVITE and NOTIFY (including check-sync, re-sync
and reboot). It is only effective when SIP authentication is enabled.
It is used to set if the device will answer the SIP request from saved servers. If 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".
GVC3210 Administration Guide
Version 1.0.1.21
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