I get busy signal, HELPP!

I have done tests with outgoing calls and it worked fine days ago , but now when I pick the phone up i get dial signal, BUT when I dial the first digit I get busy signal, but I dont know why, please somebody help me, what I need to do to fix this problemā€¦ :frowning:

post CLI output / dialplan snip?

when I start to dial, after the first digit I get busy signal, This is the cli output:

"Starting simple switch on Zap/1-1
Hang up ZAp/1-1
but I dont hang up, this message I dont know why is appearing and I listen the busy signal

is that all you get?

post your extensions.conf segment that applies to thisā€¦