4BSD/usr/man/cat4/rv.4

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RV(4)               UNIX Programmer's Manual                RV(4)



NAME
     rv - Racal/Vadic ACU interface

DESCRIPTION
     The racal/vadic ACU interface is provided by the files
     /_d_e_v/_c_u_a[_0_1] which is a multiplexed file, and by the daemon
     _d_n_d which monitors the file, simulating a standard DN
     dialer.  To place an outgoing call one forks a sub-process
     trying to open /_d_e_v/_c_u_l? and then opens the corresponding
     file /_d_e_v/_c_u_a? 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.

     The codes for the phone numbers are the same as in the DN
     interface:

     0-9  dial 0-9
     :    dial *
     ;    dial #
     -    delay for second dial tone
     <    end-of-number

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

     It is require that an end-of-number code be given.

FILES
     /dev/cua0 virtual dialer for 300 baud dialout
     /dev/cua1 virtual dialer for 1200 baud dialout
     /dev/cul0 the terminal which is connected to the 300 baud
     dialout
     /dev/cul1 the terminal which is connected to the 1200 baud
     dialout
     /usr/adm/dnacct     Accounting records for sucessfully com-
     pleted calls.

SEE ALSO
     cu(1), uucp(1)

BUGS
     Locking problems.

     The multiplexor seems to have rare-case bugs which occasi-
     nally crash the system taking trap type 9's, usually in the
     _s_d_a_t_a system routine.








Printed 11/10/80                                                1