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CHAPTER 1 GENERAL INFORMATION
System Conditions
NEAX2000 IVS
2
ISDN System Manual
ND-70919 (E), Issue 1.0
Page 25
Time Slot Allocation for DTI/PRT/DCH Card
On each DTI/PRT card, the system recognizes the lowest and highest channel numbers to which
trunk numbers have been assigned and allocates time slots to all the channels within them. If
trunk numbers are assigned to discontinuous channels in this case, the system also allocates
time slots to channels not assigned.
For example, in Figure 1-11, even when Channel 1 through Channel 10 have been assigned by
the system data programming (CM07 YY=01) except Channel 5, the system allocates a total of
10 time slots for all 10 channels. Therefore, to avoid allocation of unnecessary time slots, it is
recommended that consecutive channels are assigned on each DTI/PRT card.
In the case of the DCH card, one time slot is allocated for setting up a fixed path between the DTI
and the DCH by assigning Channel 16 of the DTI as the D Channel.
Figure 1-11 Time Slot Allocation for DTI
10
9
6
5
4
1
CH0
DXXX
DXXX
DXXX
NONE
DXXX
DXXX
NONE
LOWEST CHANNEL
HIGHEST CHANNEL
10 TIME SLOTS ARE
ALLOCATED EVEN
WHEN CH5 IS NOT
ASSIGNED.