DAHDI channels

Hi everybody,

I so new in this forum, and need your help,please.
I have a span 4 with 30 channels available, but in this only have 5 current calls. and not permit any other, in my logs I find

Everyone is busy/congested at this time (1:1/0/0) .

My question is if is my problem or mi provider?

best regards

can you post some configuration file?

the dial line in your extension.conf

with your info is hard to tell what kind of problem it is