Stored (USB, microSD, internal flash) messages playback/streaming, triggered by network (UDP, HTTP/CGI), by push buttons or by serial interface. They are distributed as a complete ABCL Firmware package, inclusive application source. The Digital Message Repeater firmware supports locally playback of up to 100 stored messages. By audio filename the file should be played once, in a loop or with relay activity. Digital Message Streamer application has been developed to allow RTP streaming of locally stored MP3 messages to a configurable destination with possibility of local playback for monitoring. The messages are assigned to upto 8 playlist files, and can be downloaded at a preconfigured time from remote FTP server, and triggered remotely either from its web interface, or locally by closing contacts.