ANNEX
TO THE MEMORANDUM OF UNDERSTANDING BETWEEN THE UNITED STATES
OF AMERICA AND THE UNION OF SOVIET SOCIALIST REPUBLICS REGARDING
THE ESTABLISHMENT OF A DIRECT COMMUNICATIONS LINK
The direct communications link between Washington and Moscow established in accordance
with the Memorandum, and the operation of such link, shall be governed by the following
provisions:
1. The direct communications link shall consist of:
a. Two terminal points with telegraph-teleprinter equipment between which communications
shall be directly exchanged;
b. One full-time duplex wire telegraph circuit, routed Washington-London-Copenhagen-
Stockholm-Helsinki-Moscow, which shall be used for the transmission of messages;
c. One full-time duplex radiotelegraph circuit, routed Washington-Tangier-Moscow, which shall
be used for service communications and for coordination of operations between the two terminal
points.
If experience in operating the direct communications link should demonstrate that the
establishment of an additional wire telegraph circuit is advisable, such circuit may be established
by mutual agreement between authorized representatives of both Governments.
2. In case of interruption of the wire circuit, transmission of messages shall be effected via the
radio circuit, and for this purpose provision shall be made at the terminal points for the capability
of prompt switching of all necessary equipment from one circuit to another.
3. The terminal points of the link shall be so equipped as to provide for the transmission and
reception of messages from Moscow to Washington in the Russian language and from
Washington to Moscow in the English language. In this connection, the USSR shall furnish the
United States four sets of telegraph terminal equipment, including page printers, transmitters, and
reperforators, with one years supply of spare parts and all necessary special tools, test
equipment, operating instructions, and other technical literature, to provide for transmission and
reception of messages in the Russian language.
The United States shall furnish the Soviet Union four sets of telegraph terminal equipment,
including page printers, transmitters, and reperforators, with one years supply of spare parts and
all necessary special tools, test equipment, operating instructions and other technical literature, to
provide for transmission and reception of messages in the English language.
The equipment described in this paragraph shall be exchanged directly between the parties
without any payment being required therefor.
4. The terminal points of the direct communications link shall be provided with encoding
equipment. For the terminal point in the USSR, four sets of such equipment (each capable of
simplex operation), with one years supply of spare parts, with all necessary special tools, test
equipment, operating instructions and other technical literature, and with all necessary blank
tape, shall be furnished by the United States to the USSR against payment of the cost thereof by
the USSR.
The USSR shall provide for preparation and delivery of keying tapes to the terminal point of the
link in the United States for reception of messages from the USSR. The United States shall
provide for the preparation and delivery of keying tapes to the terminal point of the link in the
USSR for reception of messages from the United States. Delivery of prepared keying tapes to the
terminal points of the link shall be effected through the Embassy of the USSR in Washington
(for the terminal of the link in the USSR) and through the Embassy of the United States in
Moscow (for the terminal of the link in the United States).
5. The United States and the USSR shall designate the agencies responsible for the arrangements
regarding the direct communications link, for its technical maintenance, continuity and
reliability, and for the timely transmission of messages.
Such agencies may, by mutual agreement, decide matters and develop instructions relating to the
technical maintenance and operation of the direct communications link and effect arrangements
to improve the operation of the link.
6. The technical parameters of the telegraph circuits of the link and of the terminal equipment, as
well as the maintenance of such circuits and equipment, shall be in accordance with CCITT and
CCIR recommendations.
Transmission and reception of messages over the direct communications link shall be effected in
accordance with applicable recommendations of international telegraph and radio
communications regulations, as well as with mutually agreed instructions.
7. The costs of the direct communications link shall be borne as follows:
a. The USSR shall pay the full cost of leasing the portion of the telegraph circuit from Moscow
to Helsinki and 50 percent of the cost of leasing the portion of the telegraph circuit from Helsinki
to London. The United States shall pay the full cost of leasing the portion of the telegraph circuit
from Washington to London and 50 percent of the cost of leasing the portion of the telegraph
circuit from London to Helsinki.
b. Payment of the cost of leasing the radio telegraph circuit between Washington and Moscow
shall be effected without any transfer of payments between the parties. The USSR shall bear the
expenses relating to the transmission of messages from Moscow to Washington. The United
States shall bear the expenses relating to the transmission of messages from Washington to
Moscow.