Connecting Cisco ISDN PRI Network Modules to the Network

Channelized T1/E1 PRI Network Modules with G.703

CT1/PRI and CT1/PRI-CSU modules receive and transmit data bidirectionally, at the T1 rate of 1.544 Mbps.

Channelized T1/E1 PRI Network Modules with G.703

This section provides information about the following network modules:

???1-port T1/E1 channelized PRI network module with G.703 (NM-1CE1T1-PRI) (see Figure 1)

???2-port T1/E1 channelized PRI network module with G.703 (NM-2CE1T1-PRI) (see Figure 2)

Cisco T1/E1 channelized PRI network modules with G.703 provide connection of one or two primary rate ISDN lines. T1 or E1 interfaces are configurable through Cisco IOS command-line interface (CLI) commands. Each port supports 100/120-ohm balanced and 75-ohm unbalanced termination, and features RJ-48C connectors and cable accessories allowing for DB-15, BNC, and other connector types. An onboard advanced integration module (AIM) connector allows for future universal port AIM support.

Caution To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety, connect the 1-port T1/E1 channelized PRI network modules with G.703 (NM-1CE1T1-PRI) and 2-port T1/E1 channelized PRI network modules with G.703 (NM-2CE1T1-PRI) only to intrabuilding or nonexposed wiring or cabling. The intrabuilding cable must be shielded and the shield must be grounded at both ends.

Cisco T1/E1 channelized PRI network modules with G.703 (NM-1CE1T1-PRI and NM-2CE1T1-PRI) replace the following network modules (also described in this chapter):

???NM-1CE1B

???NM-1CE1U

???NM-1CT1

???NM-1CT1-CSU

???NM-2CE1B

???NM-2CE1U

???NM-2CT1

???NM-2CT1-CSU

For information on Cisco modular access routers supporting Cisco channelized T1/E1 PRI network modules with G.703, see Table 1.

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Connecting Cisco ISDN PRI Network Modules to the Network

Channelized T1/E1 PRI Network Modules with G.703

Figure 1 and Figure 2 show the faceplates for the 1-port and 2-port channelized T1/E1 PRI network modules with G.703.

Enabling Wetting Current on Channelized T1/E1 PRI Network Modules with G.703

Wetting current is a small amount of electrical current (60 to 140 milliamps) sent from the central office to the card to prevent the corrosion of electrical contacts in the module network connection.

The wetting current feature can be enabled or disabled by the end user. It is controlled by the location of a jumper on the J8 (CTLR 0) and J9 (CTLR 1) connectors on the network module. (See Figure 3.)

To enable the wetting current feature, connect pins 1 and 2 on the J8 and J9 connectors with the jumper. To disable the wetting current feature, either remove the jumper completely, or use the jumper to connect pins 2 and 3 on the J8 and J9 connectors.

The card is shipped with the jumper connecting pins 2 and 3 on the J8 and J9 connectors, disabling the wetting current feature.

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Connecting Cisco ISDN PRI Network Modules to the Network

Channelized T1/E1 PRI Network Modules with G.703

Connecting Channelized T1/E1 PRI Network Modules with G.703 to a Network

Warning For connections outside the building where the equipment is installed, the following ports must be connected through an approved network termination unit with integral circuit protection: T1

Statement 1044

Figure 4 shows a connection between a channelized T1/E1 PRI network module with G.703 and a networking device.

Caution To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety, connect the 1-port T1/E1 channelized PRI network modules with G.703 (NM-1CE1T1-PRI) and 2-port T1/E1 channelized PRI network modules with G.703 (NM-2CE1T1-PRI) only to intrabuilding or nonexposed wiring or cabling. The intrabuilding cable must be shielded and the shield must be grounded at both ends.

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Connecting Cisco ISDN PRI Network Modules to the Network

Channelized T1/ISDN PRI Network Modules

Channelized T1/ISDN PRI Network Modules

This section provides information about the following network modules for Cisco modular routers:

???1-port channelized T1/ISDN PRI network module (NM-1CT1 or CPANM-1CT1) (see Figure 5). This module is also referred to as the 1-port CT1/PRI network module.

???2-port channelized T1/ISDN PRI network module (NM-2CT1 or CPANM-2CT1) (see Figure 6). This module is also referred to as the 2-port CT1/PRI network module.

CT1/PRI-U port (DB-15)

Connecting CT1/PRI Modules to the Network

To connect a CT1/PRI module to the network, use a DB-15-to-DB-15 T1 serial cable to connect the CT1/PRI port to a T1 channel service unit (CSU). (See Figure 7.) These ports are color-coded tan.

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Connecting Cisco ISDN PRI Network Modules to the Network

Channelized T1/ISDN PRI with CSU Network Modules

CT1/PRI port (DB-15)

Channelized T1/ISDN PRI with CSU Network Modules

This section provides information about the following network modules for Cisco modular routers:

???1-port channelized T1/ISDN PRI with CSU network module (NM-1CT1-CSU or CPANM-1CT1-CSU) (see Figure 8). This module is also referred to as the 1-port CT1/PRI CSU network module.

???2-port channelized T1/ISDN PRI with CSU network module (NM-2CT1-CSU or CPANM-2CT1-CSU) (see Figure 9). This module is also referred to as the 2-port CT1/PRI CSU network module.

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Connecting Cisco ISDN PRI Network Modules to the Network

Channelized E1/ISDN PRI Balanced (120-Ohm) Network Modules

Connecting CT1/PRI CSU Modules to the Network

To connect a CT1/PRI CSU module to the network, use a straight-through RJ-48C-to-RJ-48C cable to connect the RJ-48C port to an RJ-48C jack (see Figure 10). These ports are color-coded tan.

H7469

RJ-48C jack

Channelized E1/ISDN PRI Balanced (120-Ohm) Network

Modules

This section provides information about the following network modules for Cisco modular routers:

???1-port channelized E1/ISDN PRI balanced (120-ohm) network module (NM-1CE1B or CPANM-1CE1B) (see Figure 11). This module is also referred to as the 1-port CE1/PRI-B network module.

???2-port channelized E1/ISDN PRI balanced (120-ohm) network module (NM-2CE1B or CPANM-2CE1B) (see Figure 12). This module is also referred to as the 2-port CE1/PRI-B network module.

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Connecting Cisco ISDN PRI Network Modules to the Network

Channelized E1/ISDN PRI Balanced (120-Ohm) Network Modules

Figure 11 1-Port Channelized E1/ISDN PRI Network Module (Balanced)

Figure 12 2-Port Channelized E1/ISDN PRI Network Module (Balanced)

CE1/PRI-B ports

CE1/PRI modules are available with one or two E1 ports and with balanced or unbalanced interfaces. These modules receive and transmit data bidirectionally at the E1 rate of 2.048 Mbps, and provide up to 30 virtual channels per E1 port. Each channel can be configured individually as a serial interface.

CE1/PRI Module Jumper Settings

Jumpers on CE1/PRI modules can be used to connect or disconnect receive shield to ground. (See Table 2.) The default setting for balanced, 120-ohm CE1/PRI-B modules disconnects receive shield to ground. The default setting for unbalanced, 75-ohm CE1/PRI-U modules connects receive shield to ground. If you are experiencing ground loop problems with E1 cabling, you may want to try changing the jumper settings for the module.

Connecting CE1/PRI-B Modules to the Network

To connect a CE1/PRI-B (120-ohm) module to the network, use the appropriate cable to connect the CE1/PRI-B port to an E1 CSU. (See Figure 13, Figure 14, and Figure 15, showing DB-15, twinax, and RJ-45 CSUs, respectively.) These ports are color-coded tan.

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Connecting Cisco ISDN PRI Network Modules to the Network

Channelized E1/ISDN PRI Balanced (120-Ohm) Network Modules

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

RJ-45 jack

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Connecting Cisco ISDN PRI Network Modules to the Network

Channelized E1/ISDN PRI Unbalanced (75-Ohm) Network Modules

Channelized E1/ISDN PRI Unbalanced (75-Ohm) Network

Modules

This section provides information about the following network modules for Cisco modular routers:

???1-port channelized E1/ISDN PRI unbalanced (75-ohm) network module (NM-1CE1U or CPANM-1CE1U) (see Figure 16). This module is also referred to as the 1-port CE1/PRI-U network module.

???2-port channelized E1/ISDN PRI unbalanced (75-ohm) network module (NM-2CE1U or CPANM-2CE1U) (see Figure 17). This module is also referred to as the 2-port CE1/PRI-U network module.

Figure 16 1-Port Channelized E1/ISDN PRI Network Module (Unbalanced)

CE1/PRI-U port

Figure 17 2-Port Channelized E1/ISDN PRI Network Module (Unbalanced)

CE1/PRI-U ports

CE1/PRI Module Jumper Settings

Jumpers on CE1/PRI modules can be used to connect or disconnect receive shield to ground (see Table 3). The default setting for balanced, 120-ohm CE1/PRI-B modules disconnects receive shield to ground. The default setting for unbalanced, 75-ohm CE1/PRI-U modules connects receive shield to ground. If you are experiencing ground loop problems with E1 cabling, you may want to try changing the jumper settings for the module.

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Connecting Cisco ISDN PRI Network Modules to the Network

PRI Module LEDs

Connecting CE1/PRI-U Modules to the Network

To connect a CE1/PRI-U (75-ohm) module to the network, use the appropriate cable to connect the CE1/PRI-U port to an E1 CSU (see Figure 18). These ports are color-coded tan. The illustration shows a CSU with BNC connectors.

Figure 18 Connecting a CE1/PRI-U Module to an E1 CSU (DB-15-to-BNC Connectors)

BNC connectors

PRI Module LEDs

All network modules have an enable (EN) LED. This LED indicates that the module has passed its self-tests and is available to the router.

All PRI modules display four additional LEDs for each port. These LEDs are described in Table 4.

Channelized T1/E1 PRI Network Module with G.703 LEDs

Figure 19 and Figure 20 show channelized T1/E1 PRI network module with G.703 LEDs. See Table 5 for LED definitions.

For LEDs found on all PRI network modules, see Table 4.

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Connecting Cisco ISDN PRI Network Modules to the Network

PRI Module LEDs

Figure 19 1-Port Channelized T1/E1 PRI Network Module with G.703 LEDs

NM-1CE1T1-PRI

CT1/PRI Network Module LEDs

Figure 21 and Figure 22 show CT1/PRI network module LEDs.

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Connecting Cisco ISDN PRI Network Modules to the Network

PRI Module LEDs

Figure 21 1-Port CT1/PRI Network Module LEDs

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Connecting Cisco ISDN PRI Network Modules to the Network

Online Insertion and Removal with a Cisco PRI Network Module (Cisco 3660 and Cisco 3745 Only)

CE1/PRI Network Module LEDs

Figure 25 and Figure 26 show CE1/PRI module LEDs. These LEDs are the same for balanced and unbalanced modules.

Online Insertion and Removal with a Cisco PRI Network Module (Cisco 3660 and Cisco 3745 Only)

Some Cisco modular access routers allow you to replace network modules without switching off the router or affecting the operation of other interfaces. This feature is called online insertion and removal (OIR). OIR of network modules provides uninterrupted operation to network users, maintains routing information, and ensures session preservation.

Note To determine if your router supports OIR, see the hardware installation guide for your router.

Caution Cisco routers support OIR with similar modules only. If you remove a network module, install another module exactly like it in its place. If you remove a network module with an installed interface card, expansion module, or AIM, the replacement module should have the same hardware installed.

For a description of informational and error messages that may appear on the console during this procedure, refer to the hardware installation guide for your type of router.

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Connecting Cisco ISDN PRI Network Modules to the Network

Upgrading ISDN PRI Network Modules

Upgrading ISDN PRI Network Modules

If your Cisco 3600 series router contains a legacy ISDN PRI network module and a digital modem network module (product numbers NM-6DM, NM-12DM, NM-18DM, NM-24DM, or NM-30DM), your ISDN PRI network module may need to be upgraded to revision level -03 or higher. Earlier revisions of ISDN PRI network modules cannot send modem calls to the digital modem network module.

Note Channelized T1/E1 PRI network modules with G.703 provide full support for Cisco digital modem network modules.

If your PRI module is the wrong revision, you see a message similar to the following message when the router boots:

The PRI network module in slot 0 is incompatible with the digital modems installed in the router.

To determine the revision level, you can examine the network module itself (outside the router) or use the Cisco IOS show diag command. The label on the module board should show a part number beginning with 800- and ending with the revision level.

The output of the show diag command looks similar to the following:

Related Documents

For additional information, see the following documents and resources.

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Connecting Cisco ISDN PRI Network Modules to the Network

Obtaining Documentation, Obtaining Support, and Security Guidelines

Obtaining Documentation, Obtaining Support, and Security

Guidelines

For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What???s New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html

CCDE, CCENT, Cisco Eos, Cisco Lumin, Cisco StadiumVision, the Cisco logo, DCE, and Welcome to the Human Network are trademarks; Changing the Way We Work, Live, Play, and Learn is a service mark; and Access Registrar, Aironet, AsyncOS, Bringing the Meeting To You, Catalyst, CCDA, CCDP, CCIE, CCIP, CCNA, CCNP, CCSP, CCVP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Cisco Unity, Collaboration Without Limitation, EtherFast, EtherSwitch, Event Center, Fast Step, Follow Me Browsing, FormShare, GigaDrive, HomeLink, Internet Quotient, IOS, iPhone, iQ Expertise, the iQ logo, iQ Net Readiness Scorecard, iQuick Study, IronPort, the IronPort logo, LightStream, Linksys, MediaTone, MeetingPlace, MGX, Networkers, Networking Academy, Network Registrar, PCNow, PIX, PowerPanels, ProConnect, ScriptShare, SenderBase, SMARTnet, Spectrum Expert, StackWise, The Fastest Way to Increase Your Internet Quotient, TransPath, WebEx, and the WebEx logo are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the United States and certain other countries.

All other trademarks mentioned in this document or Website are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0804R)

Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and coincidental.

?? 2008 Cisco Systems, Inc. All rights reserved.

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