Selection and Testing of Electronic Components for LM

Operation and Maintenance
Characteristics of AKE 13
Lars G. Ericsson and Åke Persson
This article is devoted primarily to a description of the operation and maintenance
characteristics of AKE 13. The article also gives some examples of operational
experience, but this will be described in more detail in a later issue of Ericsson
Review. Certain of the facilities offered by AKE 13 as regards international and
intercontinental traffic are also touched upon.
UDC621 395 343 AKE 13 is an SPC system intended for
medium-sized to very large transit exchanges
for national as well as international
and intercontinental traffic. The
first version of AKE 13, AKE 131 with
control system APZ 130, was taken
into service in Rotterdam in 1971 and
was then the first SPC transit exchange
in the world and also the first
Table 1
AKE 13 exchanges in operation or on order on
o • k~ 1cl 1077
Country
Australia
Czechoslovakia
Denmark
Finland
Italy
Mexico
Holland
Norway
Sweden
England
Total:
Exchange
Sydney (1974) - Broadway
Sydney - Paddington
Prag
Ålborg (1974)
Arhus (1977)
Albertslund
Copenhagen (1974)
Hillerod
Odense (1976)
Slagelse
Virum
Helsinki, PLH (1974)
Helsinki, PLH
Helsinki, HT(1976)
Turku (1974)
Bari (ASST)
Napoli(SIP)
Palermo (SIP) (1975)
Padova(SIP)
Verona (SIP)
Salerno (SIP)
Guadalaiara (1975)
Mexico D F (1973)
Monterrey (1975)
Dordrecht (1976)
Rotterdam DC (1971)
Rotterdam INT (1976)
Bergen
Drammen
Oslo (1976)
Skien
Stavanger
Gothenburg, Vrr
Stockholm, FRE (1974)
Stockholm, HY(1976)
London-Thames
multi-processor exchange 1 . However,
Rotterdam was not LM Ericsson's first
SPC exchange. AKE 13 was based on
experience gained from the combined
local and transit exchange system AKE
12, which was put into operation in
Tumba, outside Stockholm, as early as
1968 2 .
The latest version of the system, which
is designated AKE 132 and which contains
the new control system APZ 150,
has been described previously 3,5 .
As can be seen from table 1, 18 AKE 13
exchanges have been put into operation
in eight countries in three continents
National
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
x
X
X
X
x
x
X
X
X
X
X
X
X
International
*
X
X
X
X
X
X
•
X
X
X
X
X
Multiple-capacity
in
operation
2 400
9600
12 000
20 400
9 600
15 000
4 000
8 000
3 600
8 400
18 600
6 000
3 600
9600
3 600
9600
2 400
12 000
Oil
order
3 600
7 200
18 000
9600
6 000
7 200
6 000
29 400
8 000
3 200
6 000
6 600
3 600
3 600
4 800
4 800
7 200
1 200
3 600
3 600
2 400
3 600
3600
4 800
16800
158 400 174 400
332 800