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VoIP Trunks require specific ports open on your firewall in order to operate normally.  Please read about Port Forwarding.

1. Click on Options --> voip

2. Using the information supplied by your VoIP Provider, fill in the following fields:

   1. Route Name

   2. Username

   3. Password

   4. Provider / Type (SIP or IAX2)

   5. Register (yes or no)

   6. Server (typically a URL or IP)

3. Click Add VoIP Account

4. To place calls over the VoIP trunk, you must modify the dialplans to use the VoIP trunk.  See How do I edit an existing dial plan?

If your VoIP account requires advanced configuration (e.g. DTMF, audio codec priority, etc.) click the + symbol next to the word Advanced to access additional configuration options.

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Required to be able to receive calls.

Port forwarding diagnostics and security considerations