.pa 1
.he 'DN (IV)'3/15/72'DN (IV)'
.ti 0
NAME		dn -- dn-11 ACU interface
.sp
.ti 0
DESCRIPTION	dn?___
is a write-only file.
Bytes written on dn?___ must be
ASCII as follows:

   0-9	dial 0-9
    :	dial *
    ;	dial #
    =	end-of-number

The entire telephone number must be
presented in a single write_____ system call.

It is recommended that an end-of-number
code be given even though only one of the
ACU's (113C) actually requires it.
.sp
.ti 0
FILES		/dev/dn0	connected to 801 with dp0
.br
/dev/dn1	connected to 113C with ttyd
.br
/dev/dn2	not currently connected
.sp
.ti 0
SEE ALSO	dp(IV), dc(IV), write(II)
.sp
.ti 0
BUGS		--