(no changes)

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP62-00647A000100180084-1
• Release Decision: RIFPUB
• Original Classification: S
• Document Page Count: 3
• Document Creation Date: November 9, 2016
• Document Release Date: April 16, 1999
• Sequence Number: 84
• Content Type: REPORT

Approved For Release 169/09/16 : CIA-RDP62-00647A00010018W84-1
ANNEX A to
COCOA4 Doc. No. 3518
Text of First Franco-U.S. Technical Areement
It seems to as, inasmuch as this has been a technical discussion,
that we should agree on the intrinsic potential or capability of the cable
in question rather than to speculate on the use to which the U.S.S.R. intends
to put the cable or exactly where it is to be laid. Therefore, the following
points are agreed:
1. The cable in question could be laid double.
2. The top frequency of 8 quads in this cable is at least 120 Kc
without distance limitation but with some possible impairment of CCITT +)
standards for international connections.
3. The capacity of the cable is agreed to be 192 standard 4 Kc
carrier-frequency telephone channels provided by tiie 8 high frequency quads
plus 12 circuits provided by the remaining 4 low frequency quads. Alterna-
tively, it would be possible to use 12 channel telephone carrier on each of
the 4 low frequency quads with some limitations on the distance and quality
of the communications on these channels.
4. It is possible to send through this cable carrier-frequency, voice
frequency, railroad information, telegraph, and certain typos of Carly warning
information, etc.
NOTE: The operation of a cable of this typo along an A.C. electrified rail-
road introduces important technical problems. First is that which
concerns safety of personnel and plant. This can be met by the addi-
tion of various typos of devices some of which would prevent the use
of the low frequency quads for carrier tr.-,nsmission.
There is also the problem of transient disturbances which might
limit the speed of data transaission.
The original and second copy of this document were signed by:
FRANCE: LT. Lapeyro
UNITED
STATES:
la. Suour
L. Luling
. or
iiBloeck
Chief Engineer, ,iinistry of Industry and Comnerce
Chief Engineer, Director of the National Centre
for the Study of Telecommunications
Dire, ctor of the Research Centro of the Boll
Telephone Co.
Chief Engineer for Carrier Frequency Systems of the
Am rican Telephone and Tcle"graph Co.
+) Comite Consultatif International Tel/C1,'.honiquo of Tel6e{;raphiquo
(International Consultative Committee for Telecommunications).
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 Approved For ReleaseJ99/09/16 : CIA-RDP62-00647A0001004084-1
ANNEX B to
COCol Doc. No. 35:~72
Text of Second Franco-U.S. Technical Agreement
In order to clarify the technical discussion in the sane spirit
as that which inspired our April 27 ~ucoting, the experts of the two delega-
tions, French and Aricricmi, not to exanin_o objectively the existing cables
between Dcle and Vallorbe and the railroad coanunications and signal require-
mcnts which they provido.
They noted that on the Dole-Vallorbe section of the Dijon-
Lausonno international line on which the total daily traffic is about 30
trains, the toloconr.iend, tclcccntrol and signal installations use a cable
with 16 circuits plus two space circuits plus 1 special 2 rim diameter star
quad for CTC and power supply. The specifically railroad tclccoriuunication
needs are now assured by a second cable with the equivalent of 32 voice
telephone circuits and b unloado quads in reserve.
It is also agi eoud th-.t Soviet railroad signalling; end tole-
co;:,,m unica.tions practice are not necds .arily similar to French practice.
Signed:
FRANCE: Lapoyre Chief Engineer, ,,,inistry of Industry
an:. Co-:irrerce
tJNfTg STATES :
i.'i. J.C. daltar Head cf the Signalling Service of the
J.N.C.F.
W.E. Bloocker C:~ief Engineer for Carrier Frequency
Systems in the American Telegraph and
Telephone Coa pany
. L. d. Sweeney Technical I dviscr, Department of State
S E C R E T
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 Approved For Release 1999109/16: CIA-RDP62-00647A00010018QW4-1
SECRET
ANNEX C to
COCO1 Doc No. 1 B
US Ex>crts Into r;~retive Sta.,tricn of Technical A reorients reached
with french Exerts
1. The cable could be laid double (thus disposing of arLm-moms that
there are serious limitations on either lonC;th or nuobor of
circuits).
2. Such a double cable, in fewer than three-fourths of its conduc-
tors, could transmit 192 long haul standard telephone circuits
and from 12 to 48 other circuits, sofa with lcn{th limitations
(thus establishing that this would furnish an important long-
distance cor_a,_iunications route). +/
? Such a cable could carry speech, telegra;h, railway signals, and
sonic ferr..s of early warning data.
4. Location of such a cable along an electrified railway would
introduce technical problc.s but thoro would be no serious limi-
tations in its ;orfor_ion.ccs except Possibly some reduction in
the speed of computer input data transiaission.
5? 48 circuits are in service for signalling and telecommunication
in a section of the French railways selected by the French for
review by the technical experts. As spares for future use there
are 30 circuits of the same typos. In addition, CTC and power
supply use 4 special heavy conductors. (Thus, the total French
requirements, including spares, are less than one-fourth of the
intrinsic calacity of the c,-able ordered by the Soviets.)
6? Soviet railroad sic,nalling and telccor.-,::?.urica:.tions practice are
not necessarily sir ilaX to Drench ;;era elite. (Indeed, we have
considerable evidence that the U.S.S.R. as well as the US would
use a sriall fraction of the conductors used in French practice.
+/ It is illj~ortant to recall that it is general practice throughout the
world to create as many as 18 teleprinter (teletype channels on a
single telephone channel. liltcrnatively, in periods of emergency, each
tolcphonc channel, by well-known band-splitting methods, is made to
carry two siruultanoous telephone mess,-ages, with some impairment of
naturalness.
S E C R L T
Approved For Release 1999/09/16 : CIA-RDP62-00647A000100180084-1