Fractional T1; Figure 2: T1 Channels And Ds0 Timeslots On A T3 Line; Table 4: Sample T1 Subchannel/Timeslot Assignments - Juniper JUNOSE 11.2.X PHYSICAL LAYER Configuration Manual

JunosE 11.2.x Physical Layer Configuration Guide
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Figure 2: T1 Channels and DS0 Timeslots on a T3 Line

Fractional T1

Fractional T1 is a portion of a T1 line. To configure fractional T1 on a channelized T3
interface, you assign a range of DS0 timeslots to a T1 channel and subchannel. A
subchannel is group of timeslots. Subchannel numbers range from 1–24 and do not
necessarily correspond to DS0 timeslots. The subchannel number identifies a fractional
T1 channel.
For example, you might make the assignments for subchannels 1–6 as listed in Table 4
on page 8.

Table 4: Sample T1 Subchannel/Timeslot Assignments

Subchannel
1
2
3
4
5
6
To configure the subchannels listed in Table 4 on page 8, use the following command
to specify the T3 controller in chassis slot 0, port 1.
host1(config)#controller t3 0/1
Then assign the timeslots to channel 1, subchannel 1.
host1(config-controll)#t1 1/1 timeslots 1-4,10,22-24
host1(config-controll)#t1 1/2 timeslots 5-6
host1(config-controll)#t1 1/3 timeslots 7-9
host1(config-controll)#t1 1/4 timeslots 11
host1(config-controll)#t1 1/5 timeslots 12-15,20-21
host1(config-controll)#t1 1/6 timeslots 16-19
DS0 Timeslot
1–4, 10, 22–24
5–6
7–9
11
12–15, 20–21
16–19
Copyright © 2010, Juniper Networks, Inc.