capi4hylafax software package provides Faxing over CAPI 2.0 device, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install capi4hylafax
capi4hylafax is installed in your system.
Make ensure the capi4hylafax package were installed using the commands given below,
$ sudo dpkg-query -l | grep capi4hylafax *
You will get with capi4hylafax package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Communication Programs |
| Package | capi4hylafax |
| Version | 1:01.03.00.99.svn.300-20+b1 [a |
| Description | Faxing over CAPI 2.0 device |
| Sub Section | comm |