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How to Connect 3CX to NeoGate TA FXO Gateway
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Figure 12 IP to Port Route Page
Step 3. Test a call from 3CX.
Now, you can use 3CX phone system’s extension to make external calls through
the pstn 1 on TA810. Do not forget to add digit 9 before the called number cause
prefix is set to 9 on 3CX outbound route. For example, if you want to call
15880270600, you need to dial 915880270600.