Bosch PRA-APAS Advanced Public Address Server, Server for the advanced public address software license, Interface for third party PCs and tablet devices to the PRAESENSA IP‑network, IP‑networked on existing Local Area Networks, Secure internet connection to the Local Area, Network (LAN) of the building, internet radio, online music streaming and text‑to‑speech‑service, Internal memory for business messages library and music playlists.

Bosch PRA-SCL System controller, large, Full control of PRAESENSA devices and audio routing, Built‑in supervised storage for messages and tone files, Support for Dante audio input and output streams, Open interface to third party applications, IP‑networked on OMNEO for audio and control, Network‑connected, DC‑powered, system controller and message manager for Public Address and Voice Alarm applications, Tone/message playback (dynamic) OMNEO channels: 8, Audio inputs (static) Dante or AES67 channels: 120, Audio outputs (static) Dante channels: 8, IP30.