Avaya IP Office VoiceMail Pro provides more advanced voice processing functionality for contact centers. It builds on the features and facilities offered by VoiceMail Lite and can be tailored to meet the individual needs of a business. Scaling from 2 to 30 simultaneous calls, VoiceMail Pro can handle the messaging requirements of small or medium organization. When used with a network of IP Office sites, VoiceMail Pro's centralized voice mail feature enables a central voice mail system to handle all sites' messaging needs.
http://www.digitcom.ca/index.asp?PageAction=VIEWCATS&Category=38
