Specifications

Section 360-381-202
8
When a new channel card is installed in the system or a system reset to factory default values is performed, the
default timeslot allocation will be used by the T1-S. When a new card is installed in a system and some of its fac-
tory default timeslots have already been allocated to other channels, the timeslot allocation will be different than
the factory default.
For the 360−80 system, the channel number associated with a circuit on a channel card is based on the chassis
slot and the circuit on the card. The table below shows the relationship between the slot, channel numbers and
default timeslots for the channels. It also shows the default number of timeslots per channel (TS/Chan). See indi-
vidual channel card documentation for more information on timeslot allocation. ‘NA’ indicates ‘Not Allocated’ which
means that these channels have no timeslot allocation during reset to factory default.
Slot 1 (lower) Slot 2 (upper) Half Size Card Slot
Module
TS/
Chan
Channel
Numbers
Default
Timeslots
Channel
Numbers
Default
Timeslots
Channel
Numbers
Default
Timeslots
3632−80
3633−80
3652−80
3657−85
3658−85
1 1−12 1−12 13−24 13−24 −− −−
3634−80 2 1−6 1−12 13−18 13−24 −− −−
3638−80 3 1−4 1−12 13−16 13−24 −− −−
3641−80 12 1 1−12 13 13−24 −− −−
3632−81
3633−81
3652−81
3657−86
3658−86
1 −− −− −− −− 25−30 NA
3634−81 2 −− −− −− −− 25−27 NA
3638−81 3 −− −− −− −− 25−26 NA
4.2 Timeslot Allocation
Timeslot allocation is done through SNMP, NMS or the craft interface. To allocate a timeslot to a channel on a
card in the system, the timeslot must not be allocated to another channel. If the timeslot has already been allo-
cated, the timeslot must be unallocated by selecting the channel (chassis slot) where it is currently allocated and
then deleting it from the timeslot. For example, in Figure 8 timeslot 13 was allocated to channel 16. To allocate it
to channel 20 it must first be unallocated from channel 16, then re-allocated to channel 20.
Any non-allocated timeslots can be allocated to any non-allocated channel. A timeslot cannot be allocated to
more than one channel. Timeslot allocation is done by selecting the channel (chassis slot) associated with the
circuit on the card and then selecting the timeslot to be allocated to that channel. As shown in Figure 8, timeslots
10 to 12 have been allocated to channels 7 to 9.
Some units use multiple timeslots per circuit such as 64xN, ISDN and Router unit. The timeslots allocated for the
circuits on these units must be consecutive. In Figure 8 channel 24 has been allocated to timeslots 22 to 24. Se-
lecting the circuit and then the first timeslot will allocate the correct number of timeslots for the circuit. The system
checks to make sure enough timeslots are available for the circuit, and if there are not enough consecutive time-
slots, an error message will be displayed.
The T1-S will transmit an all 1’s signal for any timeslot of the T1 that is not allocated. Any received data in a non-
allocated timeslot will not be sent to a channel card.