Cisco NM-1CT1 Guida rapida

Doc. No.

Cisco Systems, Inc.

170 West Tasman Drive

San Jose, CA 95134-1706

USA

Cisco Systems, Inc.

Corporate Headquarters

1-Port and 2-Port ISDN-PRI Network Module

Conﬁguration Note

Product Numbers:

NM-1CT1, NM-1CT1-CSU, NM-2CT1, NM-2CT1-CSU, NM-1CE1-B, NM-2CE1-B,

NM-1CE1-U, NM-2CE1-U

CPANM-1CT1, CPANM-1CT1-CSU, CPANM-2CT1, CPANM-2CT1-CSU,

CPANM-1CE1-B, CPANM-2CE1-B, CPANM-1CE1-U, CPANM-2CE1-U

This document provides information about the following network modules for the Cisco 3600 series

of modular access routers:

•1-port channelized T1/ISDN-PRI network module, Cisco product number NM-1CT1 or

CPANM-1CT1. (See Figure 1.) This module will also be referred to as the 1-port CT1/PRI

network module.

•2-port channelized T1/ISDN-PRI network module, Cisco product number NM-2CT1 or

CPANM-2CT1. (See Figure 2.) This module will also be referred to as the 2-port CT1/PRI

network module.

•1-port channelized T1/ISDN-PRI with CSU network module, Cisco product number

NM-1CT1-CSU or CPANM-1CT1-CSU. (See Figure 3.) This module will also be referred to as

the 1-port CT1/PRI-CSU network module.

•2-port channelized T1/ISDN-PRI with CSU network module, Cisco product number

NM-2CT1-CSU or CPANM-2CT1-CSU. (See Figure 4.) This module will also be referred to as

the 2-port CT1/PRI-CSU network module.

•1-port channelized E1/ISDN-PRI balanced (120-ohm) network module, Cisco product number

NM-1CE1BorCPANM-1CE1B. (See Figure 5.) This module will also be referred to as the 1-port

CE1/PRI-B network module.

78-3052-01

21-Port and 2-Port ISDN-PRI Network Module Conﬁguration Note

•2-port channelized E1/ISDN-PRI balanced (120-ohm) network module, Cisco product number

NM-2CE1B or CPANM-2CE1B. (See Figure 6.) This module will also be referred to as the

2-port CE1/PRI-B network module.

•1-port channelized E1/ISDN-PRI unbalanced (75-ohm) network module, Cisco product number

NM-1CE1U or CPANM-1CE1U. (See Figure 5.) This module will also be referred to as the

1-port CE1/PRI-U network module.

•2-port channelized E1/ISDN-PRI unbalanced (75-ohm) network module, Cisco product number

NM-2CE1U or CPANM-2CE1U. (See Figure 6.) This module will also be referred to as the

2-port CE1/PRI-U network module.

Unless speciﬁcally identiﬁed, references to PRI modules in this conﬁguration note include all these

network modules.

Figure 1 1-Port Channelized T1/ISDN-PRI Network Module

Figure 2 2-Port Channelized T1/ISDN-PRI Network Module

Figure 3 1-Port Channelized T1/ISDN-PRI with CSU Network Module

LOOPBACK

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CT1/PRI LEDs Enable LED

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CT1/PRI LEDs

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CT1/PRI-CSU LEDs

1-Port and 2-Port ISDN-PRI Network Module Configuration Note 3

Figure 4 2-Port Channelized T1/ISDN-PRI with CSU Network Module

Figure 5 1-Port Channelized E1/ISDN-PRI Network Module (Balanced or Unbalanced)

Figure 6 2-Port Channelized E1/ISDN-PRI Network Module (Balanced or Unbalanced)

Use this document in conjunction with your router installation and conﬁguration guide and the

Regulatory Compliance and Safety Information publication.Ifyouhavequestionsorneedhelp,refer

to the section “Obtaining Service and Support” later in this document for further information.

This document contains the following sections:

•Safety Recommendations, page 4

•Required Tools and Equipment, page 6

•Installing PRI Network Modules in a Chassis Slot, page 7

•Connecting the PRI Module to the Network, page 8

•PRI Module Pinouts, page 11

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CE1/PRI LEDs Enable LED

CE1/PRI LEDs

41-Port and 2-Port ISDN-PRI Network Module Conﬁguration Note

Safety Recommendations

•PRI Module LEDs, page 14

•Conﬁguring the PRI Interfaces, page 17

•Obtaining Service and Support, page 22

•Cisco Connection Online, page 22

Warning Only trained and qualiﬁed personnel should be allowed to install or replace this

equipment. (To see translated versions of this warning, refer to the Regulatory Compliance and

Safety Information document that accompanied the router.)

Warning Before working on a chassis or working near power supplies, unplug the power cord on

AC units; disconnect the power at the circuit breaker on DC units. (To see translated versions of this

warning,refertotheRegulatoryComplianceandSafetyInformationdocumentthataccompaniedthe

router.)

Warning Ultimate disposal of this product should be handled according to all national laws and

regulations. (To see translated versions of this warning, refer to the Regulatory Compliance and

Safety Information document that accompanied the router.)

Caution To avoid damaging electrostatic discharge (ESD)-sensitive components, ensure that you

have discharged all static electricity from your body before opening the chassis. Before performing

procedures described in this document, review the next section, “Safety Recommendations.”

Safety Recommendations

Follow these guidelines to ensure general safety:

•Keep the chassis area clear and dust-free during and after installation.

•Put the removed chassis cover in a safe place.

•Keep tools away from walk areas where you or others could fall over them.

•Do not wear loose clothing that could get caught in the chassis. Fasten your tie or scarf and roll

up your sleeves.

•Wear safety glasses when working under any conditions that might be hazardous to your eyes.

•Do not perform any action that creates a potential hazard to people or makes the equipment

unsafe.

Warning The ISDN connection is regarded as a source of voltage that should be inaccessible to

user contact. Do not attempt to tamper with or open any public telephone operator (PTO)-provided

equipment or connection hardware. Any hardwired connection (other than by a nonremovable,

connect-one-time-only plug) must be made only by PTO staff or suitably trained engineers. (To see

translated versions of this warning, refer to the Regulatory Compliance and Safety Information

document that accompanied the router.)

1-Port and 2-Port ISDN-PRI Network Module Configuration Note 5

Safety Recommendations

Warning Network hazardous voltages are present in the BRI cable. If you detach the BRI cable,

detach the end away from the router ﬁrst to avoid possible electric shock. Network hazardous

voltages also are present on the system card in the area of the BRI port (RJ-45 connector), regardless

of when power is turned off. (To see translated versions of this warning, refer to the Regulatory

Compliance and Safety Information document that accompanied the router.)

Warning The Ethernet 10BaseT, Token Ring, serial, console, and auxiliary ports contain safety

extra-low voltage (SELV) circuits. BRI circuits are treated like telephone-network voltage (TNV)

circuits. Avoid connecting SELV circuits to TNV circuits. (To see translated versions of this

warning,refertotheRegulatoryComplianceandSafetyInformationdocumentthataccompaniedthe

router.)

Safety with Electricity

Warning Before workingonequipmentthatisconnected to powerlines,removejewelry(including

rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and

can cause serious burns or weld the metal object to the terminals. (To see translated versions of this

warning,refertotheRegulatoryComplianceandSafetyInformationdocumentthataccompaniedthe

router.)

Follow these guidelines when working on equipment powered by electricity:

•Locate the emergency power-OFF switch in the room in which you are working. Then, if an

electrical accident occurs, you can quickly shut the power OFF.

•Before working on the router, turn OFF the power and unplug the power cord.

•Disconnect all power before doing the following:

—Installing or removing a router chassis

—Working near power supplies

—Performing a software upgrade

•Do not work alone if potentially hazardous conditions exist.

Warning Before opening the chassis, disconnect the telephone-network cables to avoid contact

with telephone-network voltages. (To see translated versions of this warning, refer to the Regulatory

Compliance and Safety Information document that accompanied the router.)

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

activity. (To see translated versions of this warning, refer to the Regulatory Compliance and Safety

Information document that accompanied the router.)

•Never assume that power is disconnected from a circuit. Always check.

61-Port and 2-Port ISDN-PRI Network Module Conﬁguration Note

Required Tools and Equipment

Warning Do not touch the power supply when the power cord is connected. For systems with a

power switch, line voltages are present within the power supply even when the power switch is OFF

and the power cord is connected. For systems without a power switch, line voltages are present

within the power supply when the power cord is connected. (To see translated versions of this

warning,refertotheRegulatoryComplianceandSafetyInformationdocumentthataccompaniedthe

router.)

•Look carefully for possible hazards in your work area, such as moist ﬂoors, ungrounded power

extension cables, and missing safety grounds.

•If an electrical accident occurs, proceed as follows:

—Use caution; do not become a victim yourself.

—Turn OFF power to the router.

—If possible, send another person to get medical aid. Otherwise, determine the condition of the

victim and then call for help.

—Determine if the person needs rescue breathing or external cardiac compressions; then take

appropriate action.

Preventing Electrostatic Discharge Damage

Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It occurs when

electronic printed circuit cards are improperly handled and can result in complete or intermittent

failures. Always follow ESD prevention procedures when removing and replacing cards. Ensure that

the router chassis is electrically connected to earth ground. Wear an ESD-preventive wrist strap,

ensuring that it makes good skin contact. Connect the clip to an unpainted surface of the chassis

frame to safely channel unwanted ESD voltages to ground. To properly guard against ESD damage

and shocks, the wrist strap and cord must operate effectively. If no wrist strap is available, ground

yourself by touching the metal part of the chassis.

Caution For safety, periodically check the resistance value of the antistatic strap, which should be

between 1 and 10 megohms (Mohm).

Required Tools and Equipment

You need the following tools and equipment to install a network module in a Cisco 3600 series

chassis slot:

•Network module

•Number 1 Phillips screwdriver or small ﬂat-blade screwdriver

•ESD-preventive wrist strap

1-Port and 2-Port ISDN-PRI Network Module Configuration Note 7

Installing PRI Network Modules in a Chassis Slot

Caution Network modules do not support online insertion and removal (hot swap). To avoid

damaging the module, before you insert a network module into a chassis slot, you must turn OFF

electrical power and disconnect network cables.

The following instructions apply only to installing network modules in a chassis slot. To install a

WAN interface card in a network module, see the conﬁguration note for the WAN interface card.

You can install network modules in the chassis either before or after mounting the router, whichever

is more convenient.

Note Do not install a PRI network module in the same chassis as an ISDN Basic Rate Interface

(BRI) network module or a BRI WAN interface card. This conﬁguration is not supported.

Follow this procedure to install a network module:

Step 1 Turn OFF electrical power to the router. However, to channel ESD voltages to ground, do

not unplug the power cable. Remove all network interface cables, including telephone

cables, from the rear panel.

The following warning applies to routers that use a DC power supply:

Warning Before performing any of the following procedures, ensure that power is removed from

the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that

services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of

the circuit breaker in the OFF position. (To see translated versions of this warning, refer to the

Regulatory Compliance and Safety Information document that accompanied the router.)

Step 2 Using either a number 1 Phillips screwdriver or a small ﬂat-blade screwdriver, remove the

blank ﬁller panel from the chassis slot where you plan to install the module. Save the

blank panel for future use.

Step 3 Align the network module with the guides in the chassis and slide it gently into the slot.

Step 4 Push the module into place until you feel its edge connector mate securely with the

connector on the motherboard.

Step 5 Fasten the module’s captive mounting screws into the holes in the chassis, using the

Phillips or ﬂat-blade screwdriver.

Step 6 If the router was previously running, reinstall the network interface cables and turn ON

power to the router.

81-Port and 2-Port ISDN-PRI Network Module Conﬁguration Note

Connecting the PRI Module to the Network

The following warning applies to routers that use a DC power supply:

Warning After wiring the DC power supply, remove the tape from the circuit breaker switch handle

and reinstate power by moving the handle of the circuit breaker to the ON position. (To see translated

versions of this warning, refer to the Regulatory Compliance and Safety Information document that

accompanied the router.)

Blank Network Module Panels

If the router is conﬁgured with fewer than four network modules, make sure that blank panels ﬁll the

open chassis slots to provide proper airﬂow. (See Figure 7.)

Figure 7 Blank Network Module Panel

Connecting the PRI Module to the Network

This section explains how to connect a PRI network module to a WAN.

CT1/PRI Modules

To connect a CT1/PRI module, use a DB-15-to-DB-15 T1 serial cable to connect the CT1/PRI port

to a T1 CSU. (See Figure 8.)

Figure 8 Connecting a CT1/PRI Module to a T1 CSU

H6552

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CT1/PRI port (DB-15)

T1 serial

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T1 CSU

1-Port and 2-Port ISDN-PRI Network Module Configuration Note 9

Connecting the PRI Module to the Network

CT1/PRI-CSU Modules

To connect a CT1/PRI-CSU module, use a straight-through RJ-48C-to-RJ-48C cable to connect the

RJ-48C port to an RJ-48C jack. (See Figure 9.)

Figure 9 Connecting a CT1/PRI-CSU Module to an RJ-48C Jack

CE1/PRI-B Modules

To connect a CE1/PRI-B (120-ohm) module, use the appropriate cable to connect the CE1/PRI-B

port to an E1 CSU. (See Figure 10, Figure 11, and Figure 12, showing DB-15, Twinax, and RJ-45

CSUs respectively.)

Figure 10 Connecting a 120-Ohm CE1/PRI-B Module to an E1 CSU (DB-15-to-DB-15 Connectors)

H7469

RJ-48C jack

CT1/PRI-CSU

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E1 CSU

E1 cable for 120-ohm

balanced connections

with a DB-15 connector

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10 1-Port and 2-Port ISDN-PRI Network Module Conﬁguration Note

Connecting the PRI Module to the Network

Figure 11 Connecting a 120-Ohm CE1/PRI-B Module to an E1 CSU (DB-15-to-Twinax Connectors)

Figure 12 Connecting a 120-Ohm CE1/PRI-B Module to an E1 CSU (DB-15-to-RJ-45 Connectors)

CE1/PRI-U Modules

To connect aCE1/PRI-U(75-ohm) module, use the appropriate cable to connecttheCE1/PRI-U port

to an E1 CSU. (See Figure 13.) The illustration shows a CSU with BNC connectors.

LOOPBACK

CTRLR 0

cE1-B

PRI

H7473

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CE1/PRI port (DB-15)

Twinax connectors

E1 CSU

E1 cable for 75-ohm

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with twinax connectors

at the network end

LOOPBACK

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CE1/PRI port (DB-15)

RJ-45 jack

E1 cable for 120-ohm

balanced connections

with an RJ-45 connector

at the network end

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