The MG-ANN (Voice Announcements) maintenance object provides per board announcement storage time of up to 20 minutes (15 playback ports and 1 recording port that can also be used as a playback port), and allows for announcement file portability via LAN connectivity. MG-ANN also allows for LAN backup and restore of announcement files and the use of customer provided waveform (.WAV) files.

Communication Manager supports the MG-ANN by using a virtual board concept to allow for board insertion and maintenance testing. The virtual slot location is V9.

Announcement times and ports vary according to the gateway type.