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BSD 4.3reno

.\" Copyright (c) 1980 Regents of the University of California.
.\" All rights reserved.  The Berkeley software License Agreement
.\" specifies the terms and conditions for redistribution.
.\"
.\"	@(#)rv.4	4.1 (Berkeley) 5/15/85
.\"
.TH RV 4 
.UC 4
.SH NAME
rv \- Racal/Vadic ACU interface
.SH DESCRIPTION
The racal/vadic ACU interface is provided by the files
.I /dev/cua[01]
which is a multiplexed file, and by the daemon
.I dnd
which monitors the file, simulating a standard DN dialer.
To place an outgoing call one forks a sub-process
trying to open
.I /dev/cul?
and then opens the corresponding file
.I /dev/cua?
file and writes a number on it.
The daemon translates the call to proper format for the
Racal/Vadic interface, and monitors the progress of the call
recording accounting information for later use.
.PP
The codes for the phone numbers are the same as in the DN interface:
.TP
0-9
dial 0-9
.br
.ns
.TP
.B :
dial *
.br
.ns
.TP
.B ;
dial #
.br
.ns
.TP
\-
delay for second dial tone
.br
.ns
.TP
<
end-of-number
.PP
The entire telephone number must be
presented in a single
.I write
system call.
.PP
It is require that an end-of-number
code be given.
.DT
.SH FILES
/dev/cua0	virtual dialer for 300 baud dialout
.br
/dev/cua1	virtual dialer for 1200 baud dialout
.br
/dev/cul0	the terminal which is connected to the 300 baud dialout
.br
/dev/cul1	the terminal which is connected to the 1200 baud dialout
.br
/usr/adm/dnacct	Accounting records for sucessfully completed calls.
.SH "SEE ALSO"
cu(1), uucp(1)
.SH BUGS
Locking problems.
.PP
The multiplexor seems to have rare-case bugs which occasinally crash
the system taking trap type 9's, usually in the
.I sdata
system routine.

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