Tadiran Telecom Coral IPx 800 Series, Installation Procedure And Hardware Reference Manual

Page: 308 / 400

6-68
Coral IPx 800 Installation Manual
System Co
nfi
gurat
ion
Opti
ons Co
ra
l IPx 8
00
6
0
When installing a new Coral IPx 800 system, it is recommended that the timeslot (PCM
highway) distribution among the cages and card slots be taken into account when
planning the peripheral interface cards location.
The Coral IPx 800 system (main cage and two expansion cages) is supplied with a total
of 384 timeslots between a maximum of 32 card slots. The timeslots are evenly divided
into 3 groups of 128 timeslots and distributed between slot sets, as detailed in
Table 6-8
.
Therefore, slots 1-4 of cages 0, 1 and 2 share 128 timeslots, slots 5-8 of cages 0, 1 and 2
share 128 timeslots, and slots 9-12 of cages 0, 1 and 2 share an additional 128 timeslots.
Figure 6-59
illustrates the distribution of PCM highways in
Coral
IPx 800 systems.
To ensure efficient use of time slots, it is recommended to distribute
heavy consumer
cards
(cards with a large number of ports: UDT, 30T/x, T1, PRI-30, PRI-24, IPG or UGW) evenly
among the slot sets, i.e. one heavy consumer card per slot set. The least blocking sets are
the slot sets that have the highest ratio of
number of timeslots
to
number of peripheral slots
in
Table 6-8
.
If three PRI-30 cards are installed, it is recommended that one of them be
installed in any one of slots 9-12, the second card in any one of slots 5-8,
and the last card in any one of slots 1-4.
Table 6-8 Time Slot
Distribution in Coral
IPx 800
3 Suggestions for Peripheral Card Distribution
Set Peripheral
Shelf # Card Slots Number of
Peripheral
Slots
Number of
Timeslots
1 0, 1, 2 1, 2, 3, 4 12 slots 128
2 0, 1, 2 5, 6, 7, 8 12 slots 128
3
0 9
9 slots 128
1, 2 9, 10, 11, 12