Cisco 7300-6T3 User Manual download pdf (Page 15)

1-3

Clear Channel 6-Port T3 (DS3) Line Card Installation and Configuration

OL-3449-02

Chapter 1 Overview

Interoperability Guidelines for 6T3 Line Card DSUs

The 6T3 line card supports several types of integrated data service units (DSUs). Table 1-1 lists the

feature compatibilities of 6T3 line card DSUs.

Maintenance Data Link Messages

T3 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 T3 ports on a Cisco

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

LEDs

The 6-port 6T3 line card has six LNK LEDs, one for each port, as well as one OIR LED and one

STATUS LED. (See Figure 1-2.)

Figure 1-2 LEDs on the 6T3 Line Card

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

6T3 line card is enabled for operation.

Table 1-1 Feature Compatibilities of 6T3 Line Card DSUs

DSU

Full Rate

Support

Scrambling

Support

Subrate

Support MDL

Support

Adtran Yes No Yes No

DL3100 Yes Yes Yes No

Kentrox Yes Yes

Yes

Larscom Yes Yes Yes No

1. MDL (Maintenance Data Link)

2. The 6T3 line card supports scrambling and Kentrox subrate at the same time.

LNK

66771

7300-6T3

6-PORT T3 DSU

STATUS

OIR

LNK

1 ... 14 15 16 ... 54

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