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X.29 Incoming Call Trap
Copyright (C) 1983 by
Digital Equipment Corporation,
Maynard, Massachusetts 01754
THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND COPIED
ONLY IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE AND WITH THE
INCLUSION OF THE ABOVE COPYRIGHT NOTICE. THIS SOFTWARE OR ANY OTHER
COPIES THEREOF MAY NOT BE PROVIDED OR OTHERWISE MADE AVAILABLE TO ANY
OTHER PERSON. NO TITLE TO AND OWNERSHIP OF THE SOFTWARE IS HEREBY
THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT NOTICE
AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL EQUIPMENT
DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR RELIABILITY OF ITS
SOFTWARE ON EQUIPMENT WHICH IS NOT SUPPLIED BY DIGITAL.
TOPS-20 PSI X.29 Incoming Call Trap Page 2
INTRODUCTION 27 Feb 84
This document describes the procedures for building and running the
program X29TRP. This is an unsupported tool that provides a facility
to trap and reject unwanted X.29 incoming calls.
2.0 INSTALLATION INFORMATION
The program is supplied as source files in the PS:<TOOLS> saveset of
the TOPS-20 PSI Version 1.1 distribution tape. The files are:
You need the following software utilities to build the software
o MACRO-20 Assembler
o CREF Macro Cross Reference program
o COMGEN (included in the TOPS-20 PSI tape)
2.3 Assembling And Linking
Submit the file X29TRP.CTL to assemble the MACRO source file and to
build the executable image file.
$SUBMIT X29TRP.CTL <RET>
2.4 Network Management Information
Edit the grammar file X29TRP.BNF which contains the template of the
NCP commands. Supply the appropriate values of your DECnet network
configuration for the first three parameters:
<GATEWAY NODE NAME>
<DECSYSTEM-20 NODE NAME>
<DECSYSTEM-20 NODE NUMBER>
Run the COMGEN program to produce the command file which will be
processed by NCP to set up the Network Management information in the
TOPS-20 PSI gateway node
TOPS-20 PSI X.29 Incoming Call Trap Page 3
INSTALLATION INFORMATION 27 Feb 84
[Grammar produced 12 products]
Edit the command file X29TRP.CMD to add any appropriate X25-SERVER
parameters that you wish to use to invalidate the X.29 incoming calls.
See the DECnet-20 System Manager's Guide for more information about
the module X25-SERVER parameters.
3.1 Installing X29TRP
Edit the following commands into the PTYCON.ATO file:
If you choose to create an entry for the destination TRAP in the
module X25-SERVER data base at network generation time, you may omit
the command file X29TRP.CMD.
The next time you boot the system, the trap (program X29TRP) is set up
to intercept unwanted X.29 incoming calls.
3.2 Reject Notice
You may choose to inform the user the reason the incoming call is
rejected. The text of the notice should be stored in the file
SYSTEM:X29REJ.TXT. The text may be of any length.
If the file SYSTEM:X29REJ.TXT exists, the incoming call is accepted,
the text is sent to the terminal and the circuit is cleared. Thus the
user will be able to view the entire notice, yet unable to log into
the host system.
Otherwise, the incoming call is cleared immediately.