07/09/87  dial, d

Syntax:  d dial_id {User_id} {-control_args}


Function: connects an additional terminal to an existing process.  It
requests the answering service to connect and notifies your process of
the connection.


Arguments:
dial_id
   is the identifying keyword, supplied by a logged-in process, that
   uniquely specifies that process that is accepting dial connections.
User_id
   is the Person_id.Project_id of the process that you wish to connect
   to.  This argument is required only if the dial_id is not registered
   with the system.  A registered alias can be given for the Person_id
   and Project_id.


Control arguments:
-authorization ACCESS_CLASS, -auth ACCESS_CLASS
   specifies the AIM level and category, or categories, of the data
   that will be transmitted to and from the system in this session.  If
   you don't provide it, the default authorization from the PNT is
   used.  You can only supply it with -user.
-no_print_off, -npf
   tells the system that the terminal cannot stop printing while a
   password is being entered.  The system prints a mask field to
   overwrite the area in which the password will be typed.
-print_off, -pf
   tells the system that the terminal can stop printing while a
   password is being entered.  No password mask is printed.


-user Own_person_id, -user Own_user_id
   specifies a User_id to give when validating access to the
   communications channel.  Own_person_id is your registered personal
   identifier; Own_user_id is your Person_id.Project_id.  If you supply
   no Project_id, the default project associated with the Own_person_id
   is used.  A registered alias can be given for the Person_id
   and Project_id.


Notes: When you invoke dial, the answering service searches for a
logged-in process accepting dial connections using the dial_id you
provided.  If not found, the message "Dial line not active."  is
printed and you can try again, with a different dial_id; if found, a
one-line message verifying the connection is printed.  All further
messages printed on the terminal are from your process.

This request is administratively restricted.  The project administrator
must register you and your project if you want dialed terminals.  The
system administrator must register the dial_id if you want dialed
terminals without Own_user_id and can restrict your access to a login
service communications channel.  Give -user with your User_id.  This
request then asks for your password ensuring its nonvisibility.  When
your identification and permission to use the channel are verified the
dial request is processed.


All arguments must be supplied in the correct order.

If your process terminates or logs out, a message is printed and
control of the terminal is returned to the answering service.


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Historical Background

This edition of the Multics software materials and documentation is provided and donated
to Massachusetts Institute of Technology by Group BULL including BULL HN Information Systems Inc. 
as a contribution to computer science knowledge.  
This donation is made also to give evidence of the common contributions of Massachusetts Institute of Technology,
Bell Laboratories, General Electric, Honeywell Information Systems Inc., Honeywell BULL Inc., Groupe BULL
and BULL HN Information Systems Inc. to the development of this operating system. 
Multics development was initiated by Massachusetts Institute of Technology Project MAC (1963-1970),
renamed the MIT Laboratory for Computer Science and Artificial Intelligence in the mid 1970s, under the leadership
of Professor Fernando Jose Corbato. Users consider that Multics provided the best software architecture 
for managing computer hardware properly and for executing programs. Many subsequent operating systems 
incorporated Multics principles.
Multics was distributed in 1975 to 2000 by Group Bull in Europe , and in the U.S. by Bull HN Information Systems Inc., 
as successor in interest by change in name only to Honeywell Bull Inc. and Honeywell Information Systems Inc. .

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Permission to use, copy, modify, and distribute these programs and their documentation for any purpose and without
fee is hereby granted,provided that the below copyright notice and historical background appear in all copies
and that both the copyright notice and historical background and this permission notice appear in supporting
documentation, and that the names of MIT, HIS, BULL or BULL HN not be used in advertising or publicity pertaining
to distribution of the programs without specific prior written permission.
    Copyright 1972 by Massachusetts Institute of Technology and Honeywell Information Systems Inc.
    Copyright 2006 by BULL HN Information Systems Inc.
    Copyright 2006 by Bull SAS
    All Rights Reserved