sendfax(8) on Linux
The text 244e66398931, as Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
send group 3 fax files (G3 files) with a class 2 faxmodem
Flags it lists
-
-C -
-S -
-d -
-m -
-n -
-p -
-r -
-v