EXTERNAL BUILDING COMMUNICATIONS SUPPORT TO PROJECT SAFE

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP84-00933R000500090016-3
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 6
• Document Creation Date: December 15, 2016
• Document Release Date: October 31, 2003
• Sequence Number: 16
• Publication Date: May 1, 1981
• Content Type: MF

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SAF-E280-81
1 may 1981
MEMORANDUM FOR: Director of Communication
VIA Director of Data Processing/s/ DTJ,
FROM
Director, Consolidated SAFE Project Office
SUBJECT External Building Communications Support to
Project SAFE
REEFERENCES A. OCE-M79-089 dated 13 March 1979
B. ODP-8-2284, SAF-E274-78 dated 29 December 1978
1. The SAFE remote building communications requirements,
as outlined in reference B, have been refined and now include
only two buildings through CY-83. Requirements beyond CY-83
have not been identified. Currently the plan is to support up
to 25 SAFE terminals in and up to 10 terminals for. 25X1
training in the Chamber of Commerce (C of C) building. The requirement
to have these two circuits available for testing is 1 October 1982.
2. Based upon reference A it is assumed that the Office
of Communication (OC) will provide the transmission media and
cryptographic equipment in support of the SAFE remote building
requirements. Since the reference correspondence took place it
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is our understanding that OC plans to have a new standard statistical
multiplexer on hand circa mid 1982. In keeping with this stand-
ardization practice we are evaluating the possibility of GFEing
this same statistical multiplexer for Project SAFE. To that end,
please provide an assessment of cost, schedule, and technical
approach (consider electrical interface as described in paragraph 3).
To simplify this process we expect that OC will procure and install
the multiplexers and other necessary hardware including the racks.
Project SAFE will transfer the appropriate funds to OC. II 25X1
3. To keep the number of transmission lines between the SAFE
computer center and the OC signal center to a minimum it is suggested
that the Headquarters multiplexers be installed in the SAFE computer
center. For the initial requirements through CY-83 the Bus Interface
Units (BIU) for the remote building terminals will reside in the
SAFE Computer Center. The electrical characteristics of the BIU
and the Delta Data 7260T terminal are described below.
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A. Asynchronous data lines at 9.6kps will be RS-422
balanced interface. The connector on the BIU will
be RS-449 37 pins. The connector on the 7260T
terminal will be a 25 pin connector.
B. Control lines between the BIU and the terminal,
Clear to Send (CTS) and Request to Send (RTS) will
be RS-423 unbalanced at the BIU and RS-232C unbalanced
at the terminal. Though the RS-232C terminal interface
for control lines and the RS-423 BIU control lines
may be compatible over a short distance, this may
present a problem between the Multiplexer and the
terminal over a much longer distance. There does
not appear to be any problem between the BIU and
the multiplexer when the control line at the BIU
is RS--423 and the multiplexer is speced to be
4. In addition to the multiplexer links requested in
paragraph 2 above we also request that OC support SAFE in the
intrabuilding lines as well. It is our understanding that both
and C of C have a red line grid system that can
support the SAFE terminals in CY-83. Though we cannot identify
the exact location of the and C of C terminals at
this time we request your support in this matter; the exact
location of these terminals will be provided by 1 April 1982.
5. The various electrical interfaces between equipment
described in paragraph 3 above requires further discussion and
for this and any other additional information on this subject
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ODP-8-2284
SAF-E274-78
29 December 1978
MEMORANDUM FOR: Director of Communications
FROM .
Director, Consolidated SAFE Project Office
SUBJECT Support for Project SAFE
0
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REFERENCE OC-1477-427, dated 27 June 1977
1. The reference requests by 1 January 1979 information
required by the Office of Communications to support Project
SAFE with secure communications links between Headquarters
Building and several remote Agency buildings. The support
required of the office of Communications for Project SAFE
includes the cryptographic equipment at each location and
the transmission media between. This support is required by
1 June 1981 to meet operational test requirements. The
following is keyed to the reference memorandum:
A. (NPIC)
es Building
Key Building
Chamber of Commerce
TEST (FY-81) IOC
(FY-82)
FOC (FY-84)
1
42
131
Ames Building
1
42
61
Key Building
1
82
286
Chamber of Co
mmerce
1
1
4
C. The signalling rate for each SAFE terminal is
specified to be at least 9600 baud, however, due to
system overhead, cryptographic synchrbnization, error
control and line protocol the data rate required over
the interbuilding link for each terminal is at least
13.8 Kilobaud. The maximum acceptable bit error rate
for the total interbuilding link is 10-6. The required
availability of the system including crypto equipment
and transmission media equipment, is 0.995. To preserve
the required system interaction, especially for error
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control functions, the maximum cumulative interbuilding
link round trip delay for all elements must be less
than 50 milliseconds.
D. The total number of SAFE terminals now identified
for FOC is given in subparagraph (B) above. It is
quite possible however that another remote location may
also need access to SAFE during the FY 1982 through FY
1986 time frame. This is due to the uncertainty of
office relocations and the possible addition of another
building to support the Agency requirements. To take
this into account add the following:
LOCATION IOC (FY-82) FOC (FY-84)
Building ? 20
2. In addition to SAFE terminals located in the
remote buildings, it is anticipated that some number of
Automated Data and Storage Retrieval System (ADSTAR) terminals
will be located in the remote buildings prior to the FOC
date. This requirement will be forwarded to the Office of
Communications when firm.
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Attachment: Reference
Orig. + 1 - adse
1 - D/ODP #r
1 - D/CSPO/ODP
1 - C/SDA/CSPO/ODP
1 - SAFE Chrono L/
1 - ODP Registry t.'
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OCE-M79-_11-
MEMORANDUM FOR: Director, Consolidated SAFE Project Office
FROM
Chiet, Engineering Division, OC
SUBJECT Support for the SAFE Project I 25X1
REFERENCE ODP-8-2284/SAF-E274-78, dated 29 December 1978
1. The reference identifies the projected SAFE data
requirements for Agency annex buildings through FY 1984.
The reference also identifies the data rate required over the
interbu' d' link for each terminal to be at least 13.8 kilo-
bits.
2. The specified 13.8 kbs data rate is not a standard
data rate. Several manufacturers were approached to determine
current and projected capabilities to satisfy non-standard
data rate requirements. This cursory survey indicates that
manufacturers, although not developing equipment for non-
standard data rates, could possibly modify their product lines
for this type requirement should quantity warrant. Statistical
multiplexers are available for standard data rates up to 9.6 kbs,
with predictions of 56 kbs in two to three years. However,
statistical multiplexers will not satisfy the specified round
trip delay for the SAFE interbuilding requirements. The only
available time division multiplexers for non-standard data rates
require synchronous inputs, operate at a 1.544 mbs (T-1) aggregate
and are approximately four times the cost of the currently used
T-1 multiplexers.
3. Based on the above presented arguments, the projected
SAFE communications requirements should be structured such
that the data rates and distribution will be compatible with
WARNING NOTICE -
INTELLIGENCE SOURCES >', METHODS INVOLVED
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SUBJECT: Support for the SAFE Project
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existing communications equipment and COMSEC specifications for
the SAFE communications bus. Therefore, it is requested that
the following guidelines be used to determine the interface
criteria between the SAFE interbuilding communications device
and the transmission media.
a. For Agency annexes which require a
small number of SAFE terminals, data shall
be presented for transmission at 56 kilobits
with MIL-STD-188, synchronous, Non-Return to
Zero (NRZ) format.
b. If requirements exceed four 56
kilobit circuits for any one Agency annex,
paragraph 3c below shall apply.
c. For Agency annexes which require a
large number of SAFE terminals, data shall be
presented for transmission at 1.544 megabits
(T-1 rate). The current OC standaTu'. units
are the SMC-210/SMT series. Should another
unit be considered, OC would like to evaluate
its impact on spare parts, technical training,
4. The above guidelines provide the most efficient means
to interface the projected SAFE communications requirements,
as described in reference, with the standard communications media.
It is emphasized that these guidelines do not address the error
rate specifications cited in the reference. It is our under-
standing that the error detection/correction will be a function
of the terminals and/or first level multiplexer systems. It is
estimated that the communications channel interbuilding delay
will be well under that specified in reference. I 25X1
5. Adherence to these guidelines and careful consideration
of the technical parameters of the communications media, when
designing the project SAFE interbuilding network, will ensure
that the communications media will be transparent to the
operational system.
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