Wildcard directory entry

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Hello to all,
I have times a question to the directory.

I registered and would like some numbers from the company with direct-inward dialing with me, if an unknown direct-inward dialing calls, although indicated get the company name.
Thus I would set gladly instead of the direct-inward dialing a Wildcard, which does not reach only then if the complete number into the directory is present.

But I think that it do not go, since so a Wildcard directory entry cannot be selected.

Greeting
Bonvie

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... the call number without direct-inward dialing in a directory entry to store thus as follows without the letzen three places
0123/4567 - XXX

Doesn't that fold?