topic mdem device files in Operating System - HP-UX

mdem device files

j773303 — Tue, 05 Aug 2003 07:02:59 GMT

While I configure a modem device, there are three files /dev/cua0p4 /dev/cul0p4 /dev/ttyd0p4
, what's the different /dev/cua0p4 and /dev/cul0p4?
Which file is using in callout?

Re: mdem device files

Stefan Farrelly — Tue, 05 Aug 2003 07:13:14 GMT

See man mksf - its explained there. cua0p4 means Modem Dialer, access mode 0 which is direct connect. cul0p4 means access mode 1, which is dialout, so cul0p4 is what you use for dialout.

Re: mdem device files

Steve Steel — Tue, 05 Aug 2003 07:14:33 GMT

Hi

Last time I looked it was like this

The cuaxx device file is really made as an entry for the ACU dialer port for use by uucp, thus it is in fact a hardwired port.

The cul is an outbound port special file while the tty is an inbound port special file.

Steve steel