Asterisk voicemail implementation provides integrators with option to replace proprietary existing voicemail systems with Asterisk voicemail at a merely symbolic cost. The service can be applied as a basic stand-alone utility or can operate a front end of an Unified Messaging system, holding messages by IMAP or ODBC. Creating the Asterisk voicemail server is simple and just a fraction of dial plan scripting is being needed.
IDC projected over 9 billion minutes of voice traffic to travel over worldwide packet networks in 2000, exceeding 135 billion minutes in 2004. Service revenue is projected at 1.6 billion in 2000 and 18.7 billion in 2004.