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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:

•

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

Note

•

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

452

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