Aastra 9090 Bedienungsanleitung PDF herunterladen (Seite 9)

1/1531-ANF 901 14 Uen C3 2012-10-01 9

IMENSIONING

Note: *) For typical dimensioning the 0.2 Erlang value is used.

Example 1:

For 200 mobile and fixed remote extensions with 0.2 Erlang traffic, the

nearest value in the table is 240. This gives two SPU4 boards and two

TLU76 boards (30+30=60 trunk lines) or two TLU77 boards (23+23=46

trunk lines).

Example 2:

For 5,000 mobile and fixed remote extensions with 0.25 Erlang traffic, 25

SPU4 boards and 750 trunk lines should be needed for the first 2,900

mobile and fixed remote extensions (according to the previous dimen-

sioning table). For the remaining 2,100 remote extensions, 19 SPU4

boards are needed.

In total, 25+19=44 SPU4 and TLU76 or TLU77 (with 1530 or 1173 trunk

lines) are needed for 5000 remote extensions.

16 / 480 16 / 368 1820 2280 3030 4550 9090

17 / 510 17 / 391 1940 2430 3230 4850 9680

18 / 540 18 / 414 2060 2580 3430 5140 10280

19 / 570 19 / 437 2180 2720 3630 5440 10870

20 / 600 20 / 460 2300 2870 3830 5740 11470

21 / 630 21 / 483 2420 3020 4030 6040 12060

22 / 660 22 / 506 2540 3170 4220 6330 12660

23 / 690 23 / 529 2660 3320 4420 6630 13260

24 / 720 24 / 552 2780 3470 4620 6930 13850

25 / 750 25 / 575 2900 3620 4820 7230 14450

Each

1/30

Each

1/23

+120 +150 +200 +300 +600

No. of

SPU4

boards

per

TLU76

trunk

ports

No. of

SPU4

boards

per

TLU77

trunk

ports

Traffic call rate for remote extension

(Erlang)

1 2 3 4 5 6 7 8 9 10 11 12

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