IVM

IVM = Integrated Voice Messaging

Explanation
IVM designates any generic integrated or third party hardware/software voice messaging solution for communication systems. IVM solutions extend telephone Interactive Voice Response IVR system features that could include:
 * Call Auto Attendant
 * Personal Voice Mail
 * Personal Voice Mail Attendant
 * Informational Voice Mail
 * Announcement
 * MoH
 * Speech-recognition and Speech-enabled services
 * Text To Speech TTS services