Datasheet

1-3

Cisco 7304 6-Port Clear Channel E3 Line Card Installation and Configuration

OL-5061-01

Chapter 1 Overview

Interoperability Guidelines for 6E3 Line Card DSUs

The 6E3 line card supports several types of integrated data service units (DSUs). Table 1-1 lists the

feature compatibilities of 6E3 line card DSUs.

Maintenance Data Link Messages

E3 maintenance data link (MDL) messages are used to communicate identification information between

local and remote ports. The type of information included in MDL messages includes the equipment

identification code (EIC), location identification code (LIC), frame identification code (FIC), unit, Path

Facility Identification (PFI), port number, and Generator Identification numbers. The values for each

piece of MDL message identification can be defined only by a network administrator and are discussed

in ANSI T1.107.

For information on transporting MDL messages between source and destination E3 ports on a

Cisco 7304 router, refer to T3 Maintenance Data Link Messages on the Cisco 7304 Router at the

following URL:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121limit/121ex/121ex13/

e_t3mdl.htm

LEDs

The 6-port 6E3 line card has six LNK LEDs, one for each port, as well as one OIR LED and one STATUS

LED. (See Figure 1-2.)

After system initialization, the STATUS LED goes on to indicate that power is received and that the

6E3 line card is enabled for operation.

The following conditions must all be met before the 6E3 line card is enabled:

• The 6E3 line card is correctly connected and receiving power.

• The Network Services Engine 100 (NSE-100) recognizes the 6E3 line card.

• The Cisco IOS image on the NSE-100 is running.

If any one of these conditions is not met, or if the initialization fails, the STATUS LED does not go on.

Table 1-2 on page 1-4 lists 6E3 line card LED colors and indications.

Table 1-1 Feature Compatibilities of 6E3 Line Card DSUs

DSU

Full Rate

Support

Scrambling

Support

Subrate

Support MDL

Support

1. MDL (maintenance data link)

DL3100

2. See the “DSU Link Doesn’t Work” section on page 4-20 for information about no ping response. Also

see the release notes for Cisco IOS Release 12.2(20)S

Yes Yes Yes No

Kentrox Yes Yes

3. The 6E3 line card supports scrambling and Kentrox subrate at the same time.

Yes