Four Channel’s GSM VoIP Gateway
28
D
）
Port forwarding Support
Port forwarding
(sometimes referred to as tunneling) is the act of forwarding a
network port from one network node to another. This technique can allow an
external user to reach a port on a private IP address (inside a LAN) from the outside
via a NAT-enabled router.
In order for this feature to work, the local network Gateway must support this
feature and be set up properly. Please consult your network administrator for help
to enable this
Port forwarding
feature.
E
）
Relay Proxy
Relay proxy
is a proprietary NAT traversal technology. Please consult your service
provider for more information.
Currently, the following 3 kinds of packaging mechanism are supported:
¾
Mode 1: The media uses UDP packets and (or) encrypt with multiple UDP port;
¾
Mode 2: The media uses UDP packets and (or) encrypt with single UDP port;
¾
Mode 3: The media uses TCP packets and (or) encrypt (UDP over TCP).
3.5 Volume adjustment
The GOIP400 has
volume control panel, when you want to adjust volume of the
Gateway,
you
must
change
the
http://xxx.xxx.xxx.xxx/xxx/xxx.html
to
http://xxx.xxx.xxx.xxx/xxx/
gain.htm
l
, then
“
Enter
”
:
