On Sat, Mar 11, 2017 at 09:47:30PM -0700, [email protected] wrote
> I have serial to USB converter, want to connect fax/modem to it.
I have a USB connector that plugs into a phone outlet in the wall for
emergency internet connectivity via dialup. 43 kbps is painfully slow,
but better than nothing in an emergency. I assume that your fax also
dials up over a POTS line just like a dialup modem. In that case you
need to enable...
* PPP protocol
* serial ports
* "USB Modem (CDC ACM) support"
...in your kernel. In "make menuconfig"...
Device Drivers --->
[*] Network device support --->
<*> PPP (point-to-point protocol) support
<*> PPP BSD-Compress compression
<*> PPP Deflate compression
<*> PPP support for async serial ports
Support for 1 or more "serial ports", depending on how many devices
you have hooked up.
Device Drivers --->
Character devices --->
Serial drivers --->
<*> 8250/16550 and compatible serial support
(8) Maximum number of 8250/16550 serial ports
CDC ACM protocol for "serial ports" over USB
Device Drivers --->
[*] USB support --->
<*> Support for Host-side USB
<*> USB Modem (CDC ACM) support
After building the kernel and rebooting, you'll need to create the
"serial ports" like so (root or sudo required).
mkdir -p /dev/usb
mknod /dev/usb/ttyACM0 c 166 0
mknod /dev/usb/ttyACM1 c 166 1
mknod /dev/usb/ttyACM2 c 166 2
mknod /dev/usb/ttyACM3 c 166 3
etc.
Finally, when configuring "the comm port" for the fax, select one of
the "serial ports" you've created, e.g. "/dev/usb/ttyACM0" (The last
character is number-zero, not letter-ohh.)
--
Walter Dnes <[email protected]>
I don't run "desktop environments"; I run useful applications
