Since I'm a one man band, I have two digit extension numbers set up. I don't know if it's as a result of this, but I cannot access voicemail from DR menus; I can get to the mail voicemail menu, but when asked to enter the extension number, there's a pause, then I'm asked to enter it again. This goes on until the nice lady becomes bored and says goodbye. However, if I dial a three digit number, I get 'Extension not found' The same happens if I dial voicemail directly from one of the handsets and press #. In all other respects, voicemail works fine.