Cisco T3 Manuale utente

Cisco AS5350 and AS5400 Universal Gateway Card Installation Guide

T3 Dial Feature Card

Table Of Contents

T3 Dial Feature Card

Overview

Online Installation and Removal (OIR) of the T3 DFC

Overview

Removing the T3 DFC

Installing the T3 DFC

Getting Help

Where to Go Next

T3 Dial Feature Card

This chapter describes the T3 dial feature card and includes the following sections:

• Overview

• Online Installation and Removal (OIR) of the T3 DFC

• Getting Help

• Where to Go Next

Overview

The T3 DFC provides physical line termination for a channelized T3 ingress trunk line. It uses an

onboard multiplexer to multiplex 28 channelized T1 lines into a single channelized T3 line. (See

Figure 4-1.)

The T3 DFC provides physical line termination for up to 672 DS0 channels and uses onboard

HDLC controllers to terminate digital (ISDN) calls.

You can use the bantam jacks on the DFC to monitor a T1 line or test any one of the individual

T1 circuits in drop and insert mode.

You can install a T3 DFC in any DFC slot of the universal gateway chassis.

Note The Cisco AS5350 and Cisco AS5400 support only one type of WAN DFC at a time.

Refer to "Troubleshooting," for more information.

Figure 4-1 T3 Dial Feature Card

Online Installation and Removal (OIR) of the T3 DFC

Overview

To remove a DFC without dropping any calls or connections, you will need to take the DFC out

of service by using the busyout command to disable the DFC. The busyout command is

executed on a per DFC basis and will gracefully disable the card by waiting for the active

services to terminate.

If you have active calls on the DFC after executing the busyout command, wait for the calls to

drop. Use the show busyout command to view the status of the termination process.

Caution To avoid erroneous failure messages, remove or insert only one DFC at a time.

When you replace a DFC with a new DFC of the same type in the same slot, the system software

will recognize the new trunk interfaces and bring them up automatically.

If you replace the existing DFC with a new DFC of a different type, you will have to reconfigure

the system. For configuration details, refer to the Cisco AS5350 and Cisco AS5400 Universal

Gateway Software Configuration Guide.

Removing the T3 DFC

To remove the T3 DFC, follow these steps:

Note Following these steps are examples of the output from each command.

Step 1 Determine which slot the DFC is in (See Figure 4-2 and Figure 4-3.) by entering the

show chassis command in privileged EXEC mode:

Router# show chassis slot

Figure 4-2 Slot Numbering on the Cisco AS5350 Chassis

Figure 4-3 Slot Numbering on the Cisco AS5400 Chassis

Step 2 Initialize the software busyout procedure by entering the busyout command:

Router# busyout slot-number

Step 3 Enter the show busyout command to check busyout status for that specific slot:

Router# show busyout slot-number

Step 4 You may use the clear port command to immediately disable active calls on the universal

port card. Use the show controller command to show the universal port card associated with the

T1 or E1 DFC.

Router# show controller t1/e1 slot-number/control-number timeslot timeslot-

number

Router# clear port slot-number/port number

Note The clear port command only applies to the universal port DFC.

Step 5 Verify that the OIR/MAINT LED is off; this indicates that the DFC is offline and ready

to be removed.

Note The OK/MAINT LED is green before you enter the busyout command. After you enter the

busyout command, the LED changes to yellow. The LED turns off after all calls are

disconnected and resources are taken out of service, indicating that busyout is complete.

Step 6 Attach an ESD-preventive wrist strap.

Warning Do not work on the system or connect or disconnect cables during periods of lightning

activity. To see translations of the warnings that appear in this publication, refer to the

Regulatory Compliance and Safety Information document that accompanied this device.

Step 7 Disconnect all interface cables from the DFC and secure them out of the way.

Note OIR of the T3 DFC is similar to that of the T1 or E1 DFC. To see an example of the

output during online insertion and removal of an E1 DFC refer to Chapter 3, "T1 and E1 Dial

Feature Cards"

Step 8 Loosen the two captive screws that secure the DFC to the chassis until each screw is free

of the chassis. (See Figure 4-4 and Figure 4-5.)

Figure 4-4 Loosen the Captive Screws on the Cisco AS5350

Figure 4-5 Loosen the Captive Screws on the Cisco AS5400

Step 9 Grasp the DFC handle with one hand and pull the card toward you until the card slides

free of the chassis. Grasp the ventilated metal cover with your other hand to support and guide

the DFC out of the slot. (See Figure 4-6 and Figure 4-7.)

Caution Avoid touching any pins or circuit board components during removal and installation

of the DFC.

Figure 4-6 Remove the DFC from the Cisco AS5350

Figure 4-7 Remove the DFC from the Cisco AS5400

Step 10 After you remove the DFC from the chassis, set it aside on an ESD-preventive mat.

Step 11 If a DFC slot on the carrier card is to remain empty, install a blank cover over the open

DFC slot to ensure proper airflow inside the chassis. (See Figure 4-8.)

Figure 4-8 Blank DFC Cover

Installing the T3 DFC

Warning Do not work on the system or connect or disconnect cables during periods of lightning

activity. To see translations of the warnings that appear in this publication, refer to the

Regulatory Compliance and Safety Information document that accompanied this device.

Note When you replace a DFC with a new DFC of the same type in the same slot, the system

software will recognize the new trunk interfaces and bring them up automatically. If you replace

the existing DFC with a new DFC of a different type, you will have to reconfigure the system.

For configuration details, refer to the Cisco AS5350 and Cisco AS5400 Universal Gateway

Software Configuration Guide.

To install the T3 DFC, follow these steps:

Step 1 Attach an ESD-preventive wrist strap.

Step 2 Slide the DFC into the slot until the connector pins make contact with the carrier card

backplane connector. (See Figure 4-9 and Figure 4-10.)

Figure 4-9 Install the T3 DFC in the Cisco AS5350

Figure 4-10 Install the T3 DFC in the Cisco AS5400

Step 3 Align the captive screws with their holes, and seat the card completely.

Step 4 Tighten the screws to secure the DFC to the chassis. (See Figure 4-11 and Figure 4-12.)

Figure 4-11 Tighten the Captive Screws on the Cisco AS5350

Figure 4-12 Tighten the Captive Screws on the Cisco AS5400

Step 5 Check the card LEDs to verify that the card is working properly. For information about

dial feature card LEDs, refer to "Troubleshooting"

Getting Help

For information about technical support, onsite service, and exchange and repair services, refer

to the "Obtaining Technical Assistance" section on page -xii in the "Preface."

Where to Go Next

The remaining chapters of this guide include information on installing and troubleshooting DFCs

and creating cables.

•Chapter 5, "Universal Port Dial Feature Card."

•"Troubleshooting."

•"Cabling Specifications."

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