Sonicwall connect with different subnet Mitel VOIP system

Question

You can add a VLAN sub interface to interface X3, just click the Add Interface button at the button under all the current interfaces you have under Network Interface.Select the Zone you want to assign to this
Select the VLAN you want to assign to the new interface
Select the parent Interface (in this case X)Personally I would create a new zone for this(called Mitel VOIP or similar)to allow you to customise your Access rules as they work with zones rather than interfaces. If you setup the interface zone as trusted then the access rules will be automatically setup to allow all traffic in both directions to and from your other trusted zones. If it is setup as an untrusted zone then the traffic should be blocked to all other trusted zones (but I'm not toosure about the other direction - it's been a while since I've setup a sub interface).
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Answer 1

In my SonicWALL NSA 2400
at X0 Parent interface LAN IP is 192.168.3.1/24
X1 interface WAN IP assigned by ISP.
X2 interface WLAN IP is 192.168.10.1/24
our all switches are L2 switch.
192.168.3.1 Network
connected to running all our workstation, printer, pretty much everything. I
have different subnet physically different system Using Mitel VOIP phone system
using 192.168.2.1/24.
Is there anyway can I set up the VLAN in SonicWALL’s X3 interface and connect
the cable in X3 interface to the 192.168.2.1/24
network switch. And can I manage the Mitel system from
192.168.3.1/24 network connected workstation.
Any suggestions would be appreciated.
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