Inbound route problem

I have a yeastar s412 with 02 module.
Outbound route works very well..
In inbound route i have problem: just Switched on, the pbx has answered with a default message. Then i went to route settings and changed the destination from ivr to extension (where i selected the number) then i tried to change to extension series (where i tried to set up the extension range 1000-1008 and did 5503300-5503308).
In both config when i try to call the number the pbx wont answer and there is the classic ring tone..
Which could be the problem?
Thank you

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