Voicemail

Voicemail features on Exchange 2007

I'm trying to understand the voicemail features provided by Exchange 2007 and how it compares with legacy voicemail systems.   - Is there any document or help to understand how to setup different voicemail classes of services? Software/Hardware used: Exchange 2007

Nortel Voicemail not working

We have a Nortel analog phone system that has voicemail and we have trouble with one extension. The problems is that if you call that extension from an outside line you can leave a message in the voicemail system but when the person check the mail nothing is there. If you call and leave a message...