I shutdown octel 200 /w 'shutdown' command and started /w 'startup'. When you call a busy extension instead of calling octel directly, it rings about 4 times and you hear 'enter the extension number you wish to reach or stay on the line for assistance'. It does not call mailbox to hear the greetings and let you leave a message. Any suggestions? Octel is connected to Ericsson MD110 BC12 SP9.