> # 2c307 2C-307 alice tcp!mh2c307!9100 81920 post+600dpi generic generic generic generic tcppost FIFO
> # fn 2C-501 helix tcp!fn!9100 81920 post2+600dpi+duplex generic generic generic generic tcppost FIFO
>
> are intended for use with JetDirect connected printers. But how do
> "alice" and "helix" actually deal with this?


They deal with it by invoking the tcppost transport.
See /sys/lib/lp/daemon/tcppost.

Russ