Cisco 10000 Series Configuration Manual page 210

Creating a T3, VT, or AUG Controller
To prevent a controller from responding to remote loopback commands, type:
Router(config)# controller T3 1/0/0
Router(config-controller)# equipment network loopback
Remote loopbacks are only available when you use c-bit parity framing.
Note
For more information on the loopback command, refer to the online
Troubleshooting
Creating T1 or E1 Channel Groups under SONET or SDH Framing
To create an interface that supports subscriber traffic, you must combine the timeslots into channel
groups. To help you configure channel groups, consider the following T1 and E1 characteristics:
For SONET-Framed T3 Controllers
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For SONET-Framed VT Controllers
For T1:
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For E1:
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For SDH-Framed T3 Controllers
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Creating Channel Groups for T1 SONET-Framed Interfaces
Use the t1 channel-group command to create a channel group for a SONET-framed interface.
Figure 7-1
You create a logical channel group using the following command:
t1 t1-number channel-group channel-group-number timeslots list-of-timeslots
}]
64
[no] t1 t1-number channel-group channel-group-number
Where:
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Cisco 10000 Series Router Line Card Configuaration Guide
7-26
Guide.
1 channelized T3 is divided into 28 T1s
1 T1 is divided into 24 timeslots (or DS0s)
1 VT controller is divided into 28 T1s (VT1.5)
1 T1 is divided into 24 timeslots (or DS0s)
1 VT controller is divided into 21 E1s (VT2)
1 E1 can be divided into 31 timeslots (or DS0s)
1 T3 is divided into 7 TUG-2s
1 TUG-2 is divided into either:
4 T1s that can each be divided into 24 timeslots (or DS0s)
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3 E1s that can be divided into 31 timeslots (or DS0s)
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illustrates channelization possibilities on the 4-Port Channelized OC-3/STM-1 line card.
t1-number is T1 interface number 1 to 28.
channel-group channel-group-number identifies the channel group with any number from 0 to 23.
Chapter 7 4-Port Channelized OC-3/STM-1 Line Card Configuration
Cisco 10000 Series Internet Router
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