H - Electricity – 04 – B
Patent
H - Electricity
04
B
340/71
H04B 17/00 (2006.01) H04M 3/36 (2006.01)
Patent
CA 1102422
ABSTRACT OF THE DISCLOSURE The invention concerns an arrangement for supervising a number of devices forming a group of devices in a telecommuni- cation system, concerning the operational quality, i.e. the ratio of the number of normal operations and the total number of operations, which devices (relays, relay sets, registers etc) alternately are in operation and released. Two counters are connected to each of the individual devices, namely a first counter for registration of the total number of operations of the device, and a second counter for recording the number of operations of the device exceeding a certain minimum time. A first quotient between said values is periodically established for each individual device. A first adder adds the total number of operations for each device belonging to said group. A second adder adds the number of operations exceeding a certain minimum time for each device in the group. A second quotient is established between said two values concerning the whole group. In a comparator, a comparison is made between said first quotient for the individual devices and said second quotient. An alarm arrangement delivers alarm signals when the difference between said quotients exceeds a certain value.
275813
Linden Lars K.
Persson Kjell S.
Marks & Clerk
Telefonaktiebolaget Lm Ericsson
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