I'm just connecting an old Nokia 6150 with my SL-C860 through infrared port  /dev/ttyS1.
I'm using Gnokii 0.52 from 
www.killefiz.de, which was compiled with the old UNIX PTY. 
gnokii --monitor     works just fine but
gnokiid                  complains about pty and is looking for ptyp0.
I found the following hack works:
mknod /dev/ptyp0 c 2 0
mknod /dev/ttyp0 c 3 0
chmod 660 /dev/ptyp0
chmod 660 /dev/ptyp0
After these command I have a /dev/gnokii modem to use with ppp till next boot.
How to make the device permanent ? Should I write an .rc file?
Or better: a recompiled version (0.58 is  the latest)  for the X11 rom ?
BTW on my C860 the MAKEDEV scripts shows an error:
   major_corgi-bl=254: not found
Hope the next X11 release will solve these /dev oddities...
TIA