the ericsson group - History of Ericsson - History of Ericsson

Fig. 2
Or Christian Jacobseus, L M Ericsson, Chairman
of the Organizing Committee for ITC 7,
and Dr Clem Pratt, Australian Post Office,
spoke at the farewell dinner. Dr Pratt is
representative of the organisers of ITC 8
to be held in Australia in 1976
of communication systems. The present congress has shown that ITC can successfully
deal with all these different problems.
The extensive studies that have been made of dimensioning, planning, forecasting
and supervision of large hierarchical networks were considered to be of
great value. In this context, and also as regards traffic measurement and processing
of traffic data, economic aspects of the traffic work have also been put
forward. Here one notices that competition exists between simplified methods
and more advanced methods for the use of which computers are necessary. One
of the speakers thought that the trend would be in the direction of interactive
terminals which permit the traffic engineer to use advanced methods. Simplified
methods and tables will then be used only when the quality of available data does
not justify other methods.
The use of computers in telecommunication plants and the introduction of
data communication networks have been important new fields for the traffic
engineers. Several papers have dealt with problems in conjunction with on-line
processing and with algorithms for time-sharing systems. Queueing problems in
computer memories and at the interface between low-speed terminals and highspeed
connections have also been presented. Questions arising in conjunction
with transmission at different speeds have also been brought up. All of this indicates
that the traffic engineers are now prepared to deal with the problems
which will be encountered in the organization of an integrated communication
system.
For the development of different types of terminal equipments further studies
within the field of subscriber behaviour may bring great improvements both in
system configurations and in the man-machine interface.
Accounts were given of several new, usually approximative methods for calculation
of the congestion in gradings. The same applies to link systems, within
which field a number of mathematically advanced papers dealing with the
topology of the switching networks were presented. In conjunction with the
non-blocking systems both in the strict and in the wide sense the absence of
Russian delegates was regretted, as much work has been done within this field
in the Soviet Union.
The large number of contributions in which the problems dealt with were
solved by means of simulation shows that this technique is now indispensable.
The importance of effective simulation methods and of simulation languages
specially adapted to telecommunication system was emphasized.
ERICSSON REVIEW No. 4, 1973 129