audio - Raspberry Pi running Raspian in Telnet

Question

I have a few Raspberry Pi devices (b3+) running a telnet session to our server at work. Warehouse employees scan bar codes to move product through the warehouse. These Raspberry Pi devices are running Raspbian and have replaced handheld scanners (since the warehouse staff kept breaking them). These Pi devices boot up into the terminal and establish a telnet connection with the server.

The handheld scanners that were replaced by these Pi devices, provided an audio warning tone if something didn't scan correctly (we're assuming it was an ascii generation), which allowed users to be notified of the error. After bashing my head against the wall - and pretty much anything else I can find - I'm hoping someone here can help me out.

I'm looking for a way for the Pi to generate a warning sound while in the telnet session...using ascii 7 (I'm not sure if any text is returned when the error is received or not). The sound will need to be transmitted from the Pi to the display speakers via an HDMI connection. Any suggestions?

NOTE: We can get wav files to play off the Pi using the CLI...we just can't quite get ascii 7 to return a warning/beep.

Thanks

标签： audioraspberry-pi3telnetbeep