Configuration Overview - Cisco ASR 9000 Series Configuration Manual

Information About T3/E3 Controllers and Serial Interfaces
Cisco 2-Port and 4-Port Clear Channel T3/E3 SPA
This section describes the types of loopback supported on the 2-Port and 4-Port Clear Channel T3/E3
SPA:
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Configuration Overview

Configuring a channelized T3 controller and its associated serial interfaces is a 4-step process:
Step 1 Configure the T3 controller, and set the mode for that controller to T1 or E1.
Step 2 Configure the T1 or E1 controller.
Step 3 Create channel groups and assign DS0 time slots to these channel groups as desired.
Configure the serial interfaces that are associated with the individual channel groups, as described in the
Step 4
Configuring Serial Interfaces on the Cisco ASR 9000 Series Router
Default Configuration Values for T3 and E3 Controllers
Table 2
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Table 2
Parameter
Frame type for the data line
Clocking for individual T3/E3 links
Cable length
Cisco ASR 9000 Aggregation Services Router Interface and Hardware Component Configuration Guide
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Configuring Clear Channel T3/E3 and Channelized T3 and T1/E1 Controllers on the Cisco ASR 9000 Series Router
Local loopback
Network payload loopback (Configure the local framer to send all data received from the remote side
back to the remote side.)
Network line loopback (Configure the local LIU to send all data received from the remote side back
to the remote side.)
Remote line loopback (Use FEAC to request the remote interface to loop back to SPA—T3 only)
describes the default configuration parameters that are present on the T3 and E3 controllers.
Auto-detect framing is not supported on the 2-Port Channelized OC-12c/DS0 SPA.
E3 is not supported on the 4-Port Channelized T3/DS0 SPA.
T3 and E3 Controller Default Configuration Values
module later in this document.
Default Value
For T3: C-bit framing
For E3: G.751
internal
224 feet
Configuration File Entry
framing {auto-detect | c-bit
| m23}
clock source {internal |
line}
cablelength feet
OL-32684-01