Problem with direct dialing Extensions from Outside

I hav a B410P with currently only one Line active.

When I dial the DID (9612215) from outside everything works fine (i.e. the correct Calling Group rings) after a few days (and nights) spent

As soon as I try to dial an extension (961221530 for the 30) i do not see the call in CLI and get a sound telling me, the number doesn’t exist)

What do I do wrong?

If any further info is needed to answer pleas let me know - I am rather new to Asterisk…

The system is trying to tell you that you cannot get extension 30 this way. I suppose you were dialing 961221530 from PSTN?

How did you define extension 30? Maybe you can post relevant portions of your zapata.conf and extensions.conf.