term% cat index.txt DIALOUT(3) Library Functions Manual DIALOUT(3)
NAME
dialout - place call on ACU
SYNOPSIS
dialout(class, telno)
char *class, *telno;
DESCRIPTION
Dialout searches for an automatic calling unit of the appropriate ser‐
vice class and places a data call on the associated line, using the
given telephone number. If successful, it returns an open file de‐
scriptor for the line. The file is in raw mode, and has exclusive-use
and hangup-on-close modes set. It returns -1 if all ACUs of the given
class are busy, -3 if carrier could not be set, and -9 if the service
class is unidentifiable.
The routine consults a data file /etc/aculist that consists of lines
containing six blank- or tab-separated fields.
service class
Each line with a service class matching the one specified is
tried in turn until an unoccupied one is found. Service
classes may be used used to specify a switching system (e.g.
Dimension or Centrex) and speed rate.
file The file name of the associated special file for the telephone
line.
acu The file name of the associated ACU. If specified as none, no
ACU is used and the telephone number is ignored. This is for
hardwired connections.
speed The bit rate of the interface, chosen from the numbers given in
ttyld(4).
prefix A string to be prefixed to the number. This is handy for
shared ACUs in which the first digit specifies a line. The
prefix - is taken to be an empty prefix.
postfix A string to be postfixed to the number to be dialled. Some
ACUs require an `end of number' code; it should be specified
here.
FILES
/etc/aculist
SEE ALSO
ttyld(4), dn(4), cu(1)
DIALOUT(3)