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Notes: LKSAA PROPOSAL - VOL II
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Issue 1.2
LKSAA - VOLUME II SYS/84-03-08
Part 1
TECHNICAL PROPOSAL Page
4. TERMINAL EQUIPMENT IN OFFICES ...............
267
4.1 CURRENT WORD PROCESSING SYSTEMS ...........
268
4.2 WORD PROCESSING SYSTEMS ...................
269
4.3 INTELLIGENT OFFICE SYSTEMS ................
270
4.4 OPERATION CENTRES .........................
271a
4.4.1 Duty Centre ...........................
271a
4.4.2 Situation Centre ......................
271a
4.5 TEMPEST TELETEX STATION ....................
271b
4.6 BASIC EQUIPMENT ............................
271b
4̲ ̲T̲E̲R̲M̲I̲N̲A̲L̲ ̲E̲Q̲U̲I̲P̲M̲E̲N̲T̲ ̲I̲N̲ ̲O̲F̲F̲I̲C̲E̲S̲
As a first increment for the terminal equipment in
offices a set of 18 PT80 or T1000, 1 IBM 5520 and 1
IBM 6580 will be implemented. These will be connected
directly to the Central Communication System (ZVA).
This interface is described in section 4.6. As an option
a TEMPEST Teletex Station is proposed. The TEMPEST
teletex stations are described in 4.5.
At a later date an amount of up to 500 terminals will
be connected via a Local Area Network. For this purpose
Christian Rovsing has proposed an optional X-Net as
described in chapter 2. This network offers a wide
range of interface possibilities for terminals, but
also for other peripheral units and if required main
computers. The X-net can be connected to the CR80 system
in the Communications Centre, and through this directly
to the external communications lines and to the document
printing system.
After implementation of the local area network the
working units (AE), in the offices ,are expected to
have a range of equipment; currently the types of terminals
are expected to be:
- TEMPEST Teletex Stations
- word processing systems
- intelligent office systems
- printing systems
In sections 4.1 through 4.3, these optional interfaces
are described.
4.1 C̲U̲R̲R̲E̲N̲T̲ ̲W̲O̲R̲D̲ ̲P̲R̲O̲C̲E̲S̲S̲I̲N̲G̲ ̲S̲Y̲S̲T̲E̲M̲S̲ (OPTION)
The X-Net has been in use since 1978 and the net is
in its basic philosophy an open architecture, allowing
connections to equipment from a great number of vendors.
X-Net employ the HDLC protocol.
X-Net is designed so as to enable full use of the existing
hardware in an installation. Apart from the short
user/X-Net dialogues at the start and end of a session,
X-Net will appear transparent to the user and his pre-existing
software.
X-Net's interface units from the X-Net side are programmable
and contain buffering as required. X-Net supports
the following:
o Minicomputers such as DEC, HP, Data General,
NORD etc.
o IBM 3274 Bisynchronous Communication
o NCR
o Burroughs TC500
o UNIVAC
o Plus various others
Some computers (such as IBM 3270, Burroughs TC500)
communicate with their terminals by polling them sequentially.
Such terminals would not generally support the ANSII
X3-25 standard, so the terminals themselves would not
be supported by X-Net. However, computers using these
multi-dropped protocols are supported; the responses
to the host's polling are emulated at the X-Net port.
In other words, the polling does not propagate as
far as the X-Net buses or connected terminals.
The current interfaces, which can be supported through
the X-Net interfaces such as XTA, XTC, XEP cover a
wide range of IBM equipment. The knowledge of the
IBM protocols such as 2740, 2780/3780 and 3270 will
make interfaces possible. A closer analysis of the
individual IBM system with emphasis on their current
use, their actual construction and the specific application
will yield the proper cost - benefit of the interfaces.
Systems such as IBM 6580 would be easy to interface
with little hardware cost and limited effort, the IBM
system 5520 would on the other hand be of such a nature
that a straight interface to it would not allow its
facilities to be used through X-Net. A better solution
might be a division of the system and connect the components
to the X-Net. The two other IBM systems have to be
analysed for the cost effectiveness of the interface
with regard to the hardware.
4.2 W̲O̲R̲D̲ ̲P̲R̲O̲C̲E̲S̲S̲I̲N̲G̲ ̲S̲Y̲S̲T̲E̲M̲S̲ (OPTION)
The CR16 micro computer with the very user friendly
design is expected to be TEMPEST cleared by end 1984.
This system does not only provide very advanced text
processing comparable with big systems in its local
system, but can also be equipped with programmes for
planning, budgetting, and data processing. The CR16
can be equipped for individually programming in Pascal,
Cobol, Fortran, Basic, and C.
The keylock on the keyboard provides ,together with
passwords, a two level security and authentication
system. A custom built software module would ensure
that incoming text could not be corrupted.
A printer, the TEMPEST cleared TRACOR, can be directly
attached to the word processing system but the better
and more cost effective solution is to connect the
printer to the X-Net. This solution provides for load
sharing, flexibility and a much higher functional reliability
through the direct logical redirection capability to
other printers.
Two alternatives exist to this TEMPEST cleared printer,
one is to employ the cheaper, non-TEMPEST Siemens PT88,
possible in screened areas.
Second alternative, which gives extremely good printing
quality, versatility and document style messages on
A4 is to provide a Rank Xerox 2700 for a cluster of
word processing systems. The Rank Xerox can be connected
to the X-Net and be a shared resource.
4.3 I̲N̲T̲E̲L̲L̲I̲G̲E̲N̲T̲ ̲O̲F̲F̲I̲C̲E̲ ̲S̲Y̲S̲T̲E̲M̲S̲ (OPTION)
The listed requirements are standard packages for the
CR16 which can be loaded into the system according
to requirements or they could be permanently available.
The CR16 is directly interfaceable to the X-Net.
The CR16 can be equipped with the following functions:
(1) Advanced word processing system for text, for messages
and for letters.
(2) Reception, composition and transmission of electronic
mail.
(3) Project control and monitoring with critical path
analysis.
(4) Information storage for the individual user for
messages, tables, event control.
(5) Data collection and processing, inclusive advanced
mathematical calculations.
The CR16 can also be programmed to provide event monitoring,
e.g. calender of events and appointments.
The CR16 also has graphic capabilities with 640 x 400
pixels or in a colour version with 16 colours; 320
x 400 pixels. This is sufficient for most graphical
applications. In addition the CR16 is IBM-PC compatible.
4.4 O̲P̲E̲R̲A̲T̲I̲O̲N̲ ̲C̲E̲N̲T̲R̲E̲S̲
4.4.1 D̲u̲t̲y̲ ̲C̲e̲n̲t̲r̲e̲
The duty centre monitors the situation outside normal
working hours relative to the incoming and outgoing
messages as well as necessary actions.
A word processing system, as defined in 4.2 serves
the duty centre. The stated requirements are fully
met. Through the X-Net administrator a dynamic assignment
of workstations to the duty role could be done allowing
for varying workload as well as change of duty location
without the need to move equipment. Available in the
X-Net administrator is also a security facility for
locking out terminals, e.g. outside normal hours.
4.4.2 S̲i̲t̲u̲a̲t̲i̲o̲n̲ ̲C̲e̲n̲t̲r̲e̲
The Situation Centre monitors the situation in crisis
situations. The equipment is identical to the Duty
Centre Equipment, except a large monitor might be slaved
from the display; this is a built-in feature of the
word processing system. As for the duty centre, a dynamic
assignment of equipment can be done allowing for flexibility
and increased work load.
4.5 T̲E̲M̲P̲E̲S̲T̲ ̲T̲E̲L̲E̲T̲E̲X̲ ̲S̲T̲A̲T̲I̲O̲N̲
The TEMPEST Teletex Station is based on the CR16 as
described in Chapter 3 and Appendix C. The current
activities at Christian Rovsing A/S covers a production
of teletex stations for the Danish P & T based on the
CR16. In parallel we are TEMPEST clearing the same
hardware for the military market. The unique requirements
of AA can therefore be met with a TEMPEST CR16 Teletex
Station. The station will have the teletex alphabeth,
the teletex work station capabilities, but the price
proposal will not cover a TEMPEST Hardcopy Device for
the station with full teletex alphabeth capabilities.
The TEMPEST Hardcopy Facility can be developed based
on available matrix or subject printers, but this facility
must be viewed together with the X-Net options and
the detailed requirements for printing.
The connections between the individual TEMPEST Teletex
Stations and the Central Communication System is serial
line (V24). Three possibilities exist for the physical
connections:
(1) Standard serial line interface with a maximum range
of 15m (50 feet) at high transmission speed and
an emission profile unsuited for TEMPEST application.
(2) Long line, low level serial adaptor, a standard
CHRISTIAN ROVSING A/S product, with a range of
330m (1000 feet) and suited for TEMPEST application.
(3) Optocoupler fibre optic cable, also a standard
CHRISTIAN ROVSING A/S product, with a range of
2000m and suited for TEMPEST application
4.6 B̲A̲S̲I̲C̲ ̲E̲Q̲U̲I̲P̲M̲E̲N̲T̲
As basic equipment 18 Telex Stations (PT80 or T1000),
1 IBM 5520 and 1 IBM 6580 are used. This equipment
is furnished by the customer.
The PT80 and T1000 can be delivered with both TTY and
V24 Interface. If TTY Mode is selected, conversion
equipment may be required.
The IBM Equipment utilizes IBM 3274 Bisynchronuous
Communication.
