XS Alien VoIP with 3CX Phone System

Alien VoIP with 3CX Phone System (PBX) Server Configuration

Below is the settings that worked. The first step will be to make sure the provider is registered.

3CX SIP Server Configuration

Then, proceed to the settings in the first General tab (Provider Capabilities & Registration Settings).

3CX SIP Server Provider Registration Setting

After completing the General Tab settings, please go to “Configure Advanced Options” tab. As you can see, we have disabled some options at “Provider Capabilities”. Please take note on the assigned codecs. Set “ilbc” as the first codec , then followed by G729.

3CX SIP Server Advance Options

Go to “Remote Connections” and you should see that the status is registered

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3CX SIP Server Connections

Next, go to “Outbound Rules”.

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3CX SIP Server Outbound Rules

The rule sends any call starting with 0 to Alien VoIP. It’s a simple rule to test the route.

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3CX SIP Server Outbound Rules 2

Lastly, you should make sure that your extension is registered.

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3CX SIP Server Extension Rules