I had problems getting my voicemail to set up. I’m on cricket, which is supposed to be set up the same way as att (**04*), but it gave me an error. Doing a little research I found that the 04 procedure will work on some phones but not others with cricket. I found that one of my phones just bombed, and another got closer, based on the errors that came up. (I can give you those errors if you want them.)
I had to call cricket and have them do it. The key is to tell them to set up CCF and do it for both “don’t answer” and “busy.” For some reason, the phone being off still goes to the cricket voicemail, which is interesting.
There is the option that sets back to to default voicemail, but none to retry… A little work to allow user to retry/specify a different service… Also help saying if you get an error call customer service and ask for CCF… Might be good. But then you also have to give the user what their voicemail number is…
If you have questions, you can always call me. Jolly Mark definitely knows my number (unfortunately).
(Unofficially) Jolly Marek