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and the Headquarters hot line system.
A unified system of telephone colours
was introduced for the users'
convenience as follows: yellow for city
telephones, green for intercom, combined
yellow and green for intercom
telephones connected to the city network,
red for the OATEX telephones.
All the telephone circuits described
above operated well during
the Games.
174
Radio Communications
The following radio systems were
provided for the Games of the XXII
Olympiad:
— radiotelephone communications
with service vehicles;
— paging;
— simplex radio transmission.
Radiotelephone sets were installed
in 908 vehicles in Moscow and 130
vehicles in Tallinn. This type of communications
was provided for the
OCOG top officials and staff, technical
officials, and executives of the organisations
engaged in the provision of
services for the Games.
Some users could call any party of
the city exchange by dialing an eightdigit
number, and any vehicle of their
system by dialing a four-digit number.
By dialing a two-digit number, all
other parties to this system contacted
a controller who set up connection
with other parties of this system, with
parties subscribed to the city and
OATEX networks. The controller could
call a group of subscribers at once or
to connect them to these networks.
In addition, Tallinn had a separate
radio system for ACS, whose users
were located on boats serving the
Regatta and entered the competition
results into the data-processing
system.
Paging systems supplied by the
Multitone company of Great Britain
operated in Moscow and Tallinn. It
was used by 3,000 persons in Moscow
and 400 persons in Tallinn. The paging
system was provided for the management
of the OCOG and some
organisations engaged in providing
services for the Games.
The paging system could transmit
4 tone and 10 digit signals to a
recipient, thus forming 40 coded commands.
Some commands were common
for all and the rest were coded
for specific subscriber's networks. The
paging central message desk had an
easily-remembered serial telephone
number and was equipped with dictophone
machines to record voice
messages lasting for up to two minutes.
Having received a certain command,
the person contacted called the
central desk by telephone, stated
his/her number and listened to the
information transmitted, if necessary
several times.
105 simplex radio operations using
the equipment supplied by Storno of
Denmark were organised in Moscow.
These radio communications were designed
for managers of the most
important services of the Games and
persons who had to move about the
city and venues. They were provided
to the IFs (on request) and broadcasters.