Cant call to other extensions

I’ve installed FreePBX recently and it’s working all the way, except I cant make calls to other extensions.

So I made 2 extensions, 1001 and 1002, when I register the 1001 from my x lite, it worked and found its Host IP, but when I try to register the 1002 from another PC, it always failed.
FYI I’m using VirtualBox ad the server and only succeed when registering (X-Lite) using my windows on same PC. I have bridged Adapter setting on my VirtualBox.
And never succeed if registered from another PC. Please Help, thank you.

please help thank you :frowning:

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