vpbecho(1) on Linux
The text e4650a344561, as Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it. The page shows this text now.
Perform an echo test on Voicetronix telephony hardware
Flags it lists
-
--help -
--verbose -
-? -
-v