Section 360-880-202
9
When a channel uses multiple timeslots such as 64xN, ISDN and Router unit, there must be enough
consecutive timeslots to allow the channel to be allocated (an example is shown in Figure 9 where
channel 24 uses timeslots 22
−
24 on the primary T1).
For the Protection mode, only the 24 timeslots for the Primary T1 are allocated.
For the Dual and Normal modes there are 48 timeslots available for allocation (24 for Primary T1 and
24 for Secondary T1).
When the unit comes from the factory or a factory default reset is performed, all timeslots will be
allocated to the Primary T1 (similar to channels 1
−
When the unit comes from the factory or a factory default reset is performed and the unit is in Normal
mode and a chassis slot does not have a card installed; then the timeslots normally assigned to the
channels of the uninstalled card will be allocated to ‘phantom channels’. These timeslots must be
de-allocated before they can be allocated to a channel.
When a different card is inserted into a chassis slot that had timeslots allocated, the system will
attempt to allocate the timeslots to the card channels based on the card type.
Timeslot allocation can be done through any of the network management interfaces.
4.4.1. Changing Channels/Timeslots
slot 13 on the Primary T1, the following steps would be performed to change the allocation of channel 20 to time-
slot 13:
Step
Action
1.
De-allocate the current allocation by selecting channel 16 in the timeslot allocation section of the net-
work management interface and deleting its allocation.
2.
Select channel 20 and allocate it to timeslot 13 of the Primary T1.
Primary T1
Timeslot
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Channel
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
