Chapter 3 System Configuration
49
The function “Max Trunk-to-Trunk Duration” enables the CO line incoming
call to be transferred out through another CO line. It can effectively utilize the
Voice Gateway on the system. Please enter the available time for Max
Trunk-to-Trunk. If the call is beyond the time, the system will cut off the call
and release the CO line in order to avoid “link lock”. Please note that the unit of
the available time is “minute”.
The Settings of NAT
If your network environment is behind NAT, you can assign a virtual IP to the
Blaze/Savanna Server. If you have off-premises extensions or Joint Servers, you
need to enter the NAT information of the Blaze/Savanna Server to allow the
off-premises extensions to connect to your Blaze/Savanna Server which is
behind NAT. Please check the “Behind NAT” box and enter your real IP
address of NAT Router on the “NAT IP Address” box. If there are no
off-premises extensions or Joint Servers in your InterPBX Communication
System, you don’t need to edit the settings of NAT.
Open a Communication Port
When there are off-premises extensions or Joint Servers in your Blaze/Savanna
Server that is behind NAT, besides the above settings, you also need to open a
service port on your NAT Router in order to allow the off-premises equipments
to connect to your Blaze/Savanna Server. When you have off-premises
extensions, please open the UDP6046 port on your NAT Router. If the
off-premises extensions are also behind NAT Router, you also need to open the
UDP6046 port for them. Please refer to Chapter 5 Extension Management/
Off-Premises Extensions for more details. When you have Joint Servers, please
open the UDP6055 port on your NAT Router. If the Joint Servers are behind
NAT, you need to turn on the NAT settings of the Blaze/Savanna Server and
open the UDP6055 port on NAT Router. If you have DSG NAT Proxy, you only
need to register the Blaze/Savanna Server to the NAT Proxy without opening
the communication port for Blaze/Savanna Server or off-premises extensions.
Set QoS
The InterPBX Communication System supports 802.1p/Q. You can put a check
on “QoS Enabled” box to activate the system’s QoS. You may set VLAN ID and
802.1p Priority. If you activate the QoS function, your settings need to be the
same as the settings of Switch.
