Cisco Systems OL-2485-20 manual Port T3/E3 Network Modules, 20-1, C H A P T E R

C H A P T E R 20

Connecting T3/E3 Network Modules

This chapter describes how to connect T3/E3 network modules for modular access routers and contains the following sections:

•1-Port T3/E3 Network Modules, page 20-1

•Connecting T3/E3 Network Modules to the Network, page 20-2

•T3/E3 Network Module LEDs, page 20-3

•Related Documents, page 20-3

Tip To determine whether your router supports a specific network module, see Table 1-6 on page 1-16.

1-Port T3/E3 Network Modules

The NM-1T3/E3 network module is a single-port universal T3/E3 network module with integrated CSU/DSU, clear channel, and subrate support. (See Figure 20-1.) Channels on the network module can be configured as either T3 or E3 through Cisco IOS software.

Figure 20-1 1-Port T3/E3 Network Module Faceplate

NM-1T3/E3 SEE MANUAL BEFORE INSTALLING NETWORK MODULE

	T3/E3
TX	RX

CD LP AIS FERF/RAI

AL

EN

72536

Note The NM-1T3/E3 network module provides subrate T3 support for Digital Link, Kentrox, Larscom, Verilink, and Adtran. The NM-1T3/E3 network module also provides subrate E3 support for Digital Link and Kentrox.

Cisco Network Modules Hardware Installation Guide

OL-2485-20 20-1