Please post in paragraphs, more than one, much easier to read.
For whatever reason, the DID ringing the phone is not being call forwarded, that is why you are getting the main greeting.
Try one extension, if you just ring the 3 digit extension, does it forward to the extension's voicemail box? If not, the DID won't forward either.
Did you do any copying of extensions, maybe from one that wasn't done right? Look at the individual extension and see where they are forwarded.
This is why you test. On Thursday night we started a job at 5 PM not knowing the owner's mother was in town and would have liked to go home instead of waiting for us to take out an old Partner.
Yes, we left at 11 PM and the system worked but they were wanting to go home so bad we didn't test the fax and the credit card machine and of course the ass who installed the system put everything through the Partner and we were back there the next day fixing the fax line and the CC line.
TEST, TEST, Just like we didn't do on Thursday because they wanted to go home so bad, TEST, TEST.
