Table of Contents

Introduction to the Cisco 6130 with NI-2 System

Features
Configurations

Direct Connect with a POTS Splitter Configuration
Direct Connect Without a POTS Splitter Configuration
Subtended Network Configuration

Cisco 6130 Chassis Overview

Cisco 6130 Card Compartment
Cisco 6130 Backplane
Cisco 6130 Cards

Quad-Port DMT-2 ATU-C Line Card Overview
Quad-Port Flexi ATU-C Line Card Overview
Quad-Port STU-C Line Card Overview
DS3/2DS3 NI-2 Card Overview
OC-3c/OC-3c NI-2 Card Overview
Network Clocking Overview

System I/O Card
Front Cover
Rear Cover
Fan Tray

Cisco 6120 Chassis Overview

Cisco 6120 Card Compartment
Cisco 6120 Backplane
Cisco 6120 Cards

Management Software

Product Overview

This chapter provides an overview of the Cisco 6130 with NI-2 system. This chapter contains the following sections:

• Introduction to the Cisco 6130 with NI-2 System

• Cisco 6130 Chassis Overview

• Cisco 6120 Chassis Overview

• Management Software

Note   If you are converting from a Cisco 6130 with NI-1 system to a Cisco 6130 with NI-2 system, refer to the conversion procedures that are available on the World Wide Web at http://www.cisco.com/univercd/cc/td/doc/product/dsl_prod/c6130ni2/upgrade/78_10709.htm

Introduction to the Cisco 6130 with NI-2 System

The Cisco 6130 with NI-2 system is part of the Cisco DSL product family that provides end-to-end service by carrying data between a subscriber's home or office, a telephone central office (CO), and various networks. The Cisco 6130 with NI-2 system sends and receives subscriber data (often Internet service) over existing copper telephone lines, concentrating all traffic onto a single high-speed trunk for transport to the Internet or a corporate intranet. Asymmetric digital subscriber line (ADSL) and symmetrical digital subscriber line (SDSL) customer premises equipment (CPE) devices, which are connected to PCs or routers at the subscriber site, modulate data so that the data can travel over telephone lines to the Cisco 6130 digital subscriber line access multiplexer (DSLAM) at the CO.

The Cisco 6130 with NI-2 system includes the following components:

• Cisco 6130 chassis--A carrier class DSLAM.

• Cisco 6120 chassis--A passive plain old telephone service (POTS) splitter.

• ADSL POTS splitters, or voice filters (located both at the subscriber premises and at the CO)--Supports simultaneous voice and data transmission. If a subscriber is using a telephone line for data only, the POTS splitter connection is not required.

• Management software--Provisions and manages the Cisco 6130 with NI-2 system.

  • Cisco Internet Operating System (IOS) Release 12.1(2)DA--A command-line interface (CLI) that is available for network element provisioning.

  • Cisco DSL Manager (CDM) Release 3.2--A graphical user interface (GUI) that runs on a Sun SPARCstation and is a complete Simple Network Management Protocol (SNMP)-based element management system with fault, configuration, and performance reporting capabilities.

Features

The features of the Cisco 6130 with NI-2 system include the following items:

• Supports both ADSL and SDSL

• Carrierless amplitude and phase modulation (CAP) rate adaptive DSL (RADSL), ANSI T1.413 Issue 2 Discrete Multi-Tone (DMT-2), and G.lite modem support

• Small footprint that terminates up to 128 ADSL/SDSL subscriber lines (using a Direct Connect configuration)

• NEBS compliant, 23-inch chassis

• Manageable through IOS or CDM

• Subtend as many as twelve Cisco 6130 chassis, which support up to 1664 subscribers

• Supports the entire range of virtual channel identifier (VCI)/virtual path identifier (VPI) connections and none of the connections are limited by memory

• ATM Forum UNI Version 3.1 compliant

• Nonblocking ATM switching architecture

• Allows up to four ATM classes of service simultaneously

Configurations

This guide details the installation steps for the following configurations:

Direct Connect with a POTS Splitter Configuration

The Direct Connect with a POTS splitter configuration supports up to 128 subscribers through directly connected modems using ADSL technology. To increase subscribership, you can add additional chassis to your system.

This configuration includes the following hardware components:

• Cisco 6130--Maximum of two chassis are allowed per rack.

  • Quad-port DMT-2 ATU-C line cards (4xDMT-2).

  • Quad-port flexi ATU-C line cards (4xflexis)--Configure as CAP, DMT, or G.lite.

• Cisco 6120 or a third-party POTS splitter.

  • DMT POTS cards (use in both the Cisco 6120 or the third-party POTS splitter).

• Fan tray--Required when using the Cisco 6130 chassis. If you are installing more than one Cisco 6130 chassis, a fan tray must be installed under each chassis.

Figure 1-1 shows the components for a Direct Connect with a POTS splitter configuration when you are using a Cisco 6130 chassis.

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Note   Either a Cisco 6120 or a third-party POTS splitter can be used in a Direct Connect with a POTS splitter configuration. Both chassis cannot be used. In a Direct Connect with a POTS splitter configuration using a Cisco 6120 and 4xflexi, it is necessary to install an additional Cisco 6120 chassis. The additional Cisco 6120 chassis expands the system to accommodate 128 ports.

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Caution Mixing incompatible line cards can cause unpredictable system behavior. See Table 1-4 for intermixing compatibility.

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Direct Connect Without a POTS Splitter Configuration

The Direct Connect without a POTS splitter configuration supports up to 128 subscribers through directly connected modems using either ADSL or SDSL technology. To increase subscribership, you can add additional chassis to your system.

This configuration includes the following hardware components:

• Cisco 6130--Maximum of two chassis are allowed per rack.

  • 4xDMT-2.

  • 4xflexi--Configure as CAP, DMT, or G.lite.

  • Quad-port STU-C line cards (4xSDSL).

• Fan tray--Required when using the Cisco 6130 chassis. If you are installing more than one Cisco 6130 chassis, a fan tray must be installed under each chassis.

Figure 1-2 shows the components for a Direct Connect without a POTS splitter configuration.

Subtended Network Configuration

A subtended network configuration

The term subtending refers to the host chassis, and subtended refers to the downstream chassis in a subtended network.

The NI-2 card provides three types of subtended network connections:

• A DS3 ATM interface

• A high-speed OC-3c optical ATM interface that supports single-mode fiber (SMF) intermediate range

• A high-speed OC-3c optical ATM interface that supports multimode fiber (MMF) short range

Figure 1-3 shows typical DS3 configured Cisco 6130 systems subtended in a combined subtending tree topology with daisy chain. The subtending host chassis at the top of the subtending tree connects directly to the ATM switch. The middle two Cisco 6130 chassis in the lowest level are daisy chained. TRNK 1 refers to the single network trunk or Cisco 6130 chassis subtended network interface. SBTD 2 and SBTD 3 refer to the two Cisco 6130 chassis subtended interfaces. You make network interface connections at the system I/O card that is installed on the Cisco 6130 chassis backplane.

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Note   You can subtend Cisco 6130 chassis with DS3/2DS3 NI-2 cards in a continuous daisy chain. However, this subtending scheme is not optimal for data throughput for daisy-chained Cisco 6130 chassis that use DS3/2DS3 NI-2 cards.

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Cisco IOS software is not implemented to manage the primary Cisco 6130 chassis and all subtended Cisco 6130 chassis as a single large Cisco 6130 with NI-2 system. The initial release of Cisco 6130 with NI-2 system emphasizes bandwidth aggregation. Each Cisco 6130 supports an independent IOS processor and MIB.

Subtended Network Configuration with OC-3c/OC-3c NI-2 Cards

In a subtended network configuration using OC-3c/OC-3c NI-2 cards (SMF or MMF), you can subtend up to twelve OC-3c configured chassis in a daisy chain, all connecting through one subtending host chassis to the ATM backbone (see Figure 1-4).

Cisco 6130 Chassis Overview

The Cisco 6130 chassis is compatible with the following configurations:

• Direct Connect with a POTS splitter (using a Cisco 6120 chassis)

• Direct Connect with a POTS splitter (using a third-party POTS splitter)

• Direct Connect without a POTS splitter

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Note   Secondary line protection is provided through the Cisco 6130 chassis line cards.

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Cisco 6130 Card Compartment

The card compartment holds all circuitry that relates to the Cisco 6130 with NI-2 system operation. The card compartment contains 38 slots. Table 1-1 describes each card slot assignment for the Cisco 6130 chassis.

Table 1-1: Cisco 6130 Card Slot Assignments

Card Slot	Card Assignment
1 to 8	4xDMT-2, 4xflexi, or 4xSDSLs1
9	Blank faceplate2
10	NI-2 card
11	Blank faceplate
12	Blank faceplate
13 to 20	4xDMT-2, 4xflexi, or 4xSDSLs
21 to 28	4xDMT-2, 4xflexi, or 4xSDSLs
29 to 30	Blank faceplates2
31 to 38	4xDMT-2, 4xflexi, or 4xSDSLs

14xSDSLs can only be used in a Direct Connect without a POTS splitter configuration. 2Blank faceplates must be installed in all open slots of each chassis.

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Note   You can purchase blank faceplates for empty Cisco 6130 card slots.

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Figure 1-5 identifies the Cisco 6130 card slots. Each slot on a chassis is numbered along the top of the chassis. In this guide, the slot numbers are shown on the cards for easy reference and readability. These slots are referred to in subsequent sections of this chapter and elsewhere in this guide.

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Note   Figure 1-5 shows the Cisco 6130 without the required front cover installed. The front cover must be installed while the Cisco 6130 with NI-2 system is in operation.

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Figure 1-5:

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Note   There are primary and secondary slots for the NI-2 card. The secondary slot is not used at this time (slot 11).

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Cisco 6130 Backplane

Figure 1-6 shows the Cisco 6130 backplane.

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Note   To determine if you have a Cisco 6130, locate the Cisco 6130 label on the upper right corner of either the chassis or the front cover of the chassis. Another way to determine if you have a Cisco 6130 is to locate the J49 connector on the backplane. The Cisco 6100 backplane does not have this connector.

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Figure 1-6:

Table 1-2 describes the connectors and switches on the Cisco 6130 backplane.

Cisco 6130 Cards

This section contains the following information about the types of Cisco 6130 cards:

• Quad-Port DMT-2 ATU-C Line Card Overview

• Quad-Port Flexi ATU-C Line Card Overview

• Quad-Port STU-C Line Card Overview

• DS3/2DS3 NI-2 Card Overview

• OC-3c/OC-3c NI-2 Card Overview

Table 1-3 shows the configurations where the Cisco 6130 line cards can operate.

Table 1-3: Cisco 6130 Card and Configuration Compatibility

Line Card	Direct Connect with a POTS Splitter Configuration	Direct Connect Without a POTS Splitter Configuration	Third-Party POTS Splitter
4xDMT-2	Yes	Yes	Yes
4xflexi1	Yes	Yes	Yes
4xSDSL2, 3	No	Yes	No

1The 4xflexi feature support for the Cisco 6130 is present in Release 12.1(2)DA or later. 2The 4xSDSL feature support for the Cisco 6130 is present in Release 12.1(2)DA or later. 34xSDSL does not support POTS.

The Cisco 6130 chassis supports line card intermixing. You can only intermix the 4xflexi (CAP) and the 4xflexi (DMT-2) in the same chassis half. The left half comprises slots 1 to 8 and 21 to 28; right half comprises slots 13 to 20 and 31 to 38. Table 1-4 details the line card intermixing configurations in a Cisco 6130 chassis.

Table 1-4: Cisco 6130 Line Card Intermixing

Line Card Combination	Cisco 6130 Chassis
4xflexi (CAP mode) and 4xflexi (DMT mode)	Supported
4xflexi (CAP mode) and 4xSDSL1	Supported
4xflexi (DMT mode) and 4xSDSL1	Supported

1The 4xSDSL is used in a Direct Connect without POTS splitter configuration only.

Quad-Port DMT-2 ATU-C Line Card Overview

The 4xDMT-2

• Is T1.413 Issue 2 compliant.

• Supports four ADSL modem connections.

• Converts ADSL modulation from the line into digital data streams to and from the NI-2 card.

• Negotiates the line rate with the CPE when it trains and bases the rate on line quality and distance.

• Has top and bottom locking levers with top and bottom locking tabs

Figure 1-7 shows a close-up of the 4xDMT-2 faceplate.

Table 1-5 describes the 4xDMT-2 LED indicator functions.

Figure 1-8 is a block diagram of the 4xDMT-2.

Quad-Port Flexi ATU-C Line Card Overview

The 4xflexi

• Supports CAP, DMT, or G.lite line encoding.

• Supports four ADSL modem connections.

• Converts ADSL modulation from the line into digital data streams to and from the NI-2 card.

• Negotiates the line rate with the CPE when it trains and bases the rate on line quality and distance.

• Has top and bottom locking levers with top and bottom locking tabs

The edge connector key, located on the rear of the 4xflexi, connects the 4xflexi to the backplane of the chassis. There are two edge connector keys available for the 4xflexi: one has six notches (ATUC-4-FLX-1=), and one has seven notches (ATUC-4-FLX-2=). You can use both versions in the Cisco 6130 with NI-2 system. Figure 1-9 shows the edge connector key with seven notches.

Figure 1-10 shows a close-up of the 4xflexi faceplate.

Table 1-6 describes the 4xflexi LED indicator functions.

Table 1-6: Flexi ATU-C Line Card LED Indicators

LED	State	Function
STATUS	Green slow blinking	The self-test is in progress.
	Green fast blinking	The image download is in progress.
	Green solid	The status is OK.
	Red	The self-test or line card has failed.
	Off	The ATU-C line card has a power failure.
ACTIVE	Green solid	The line card is activated.
	Off	The line card is not in service.
CAP	Green solid	The line card is in CAP mode.
	Off	The line card is not in CAP mode.
DMT	Green solid	The line card is in DMT mode.
	Off	The line card is not in DMT mode.
G.LITE	Green solid	The line card is in G.lite mode.
	Off	The line card is not in G.lite mode.
A1	Green solid	Modem 1 is trained.
	Green blinking	Training is in progress for modem 1.
	Off	Modem 1 is idle.
A2	Green solid	Modem 2 is trained.
	Green blinking	Training is in progress for modem 2.
	Off	Modem 2 is idle.
A3	Green solid	Modem 3 is trained.
	Green blinking	Training is in progress for modem 3.
	Off	Modem 3 is idle.
A4	Green solid	Modem 4 is trained.
	Green blinking	Training is in progress for modem 4.
	Off	Modem 4 is idle.

Figure 1-11 is a block diagram of the 4xflexi.

Quad-Port STU-C Line Card Overview

The 4xSDSL

• Supports 2B1Q line encoding.

• Is designed for use in a Direct Connect without a POTS splitter configuration.

• Supports four SDSL modem connections.

• Transports ATM data at rates of up to 1168 kbps over a single twisted pair of copper wire.

• Converts SDSL modulation from the line into digital data streams to and from the NI-2 card.

• Has top and bottom locking levers with top and bottom locking tabs.

The edge connector key, located on the rear of the 4xSDSL, connects the 4xSDSL to the backplane of the chassis. There are two edge connector keys available for the 4xSDSL: one has six notches (STUC-4-2B1Q-DIR-1=), and one has seven notches (STUC-4-2B1Q-DIR-2=). You can use both versions in the Cisco 6130 with NI-2 system. Figure 1-12 shows the edge connector key with seven notches.

Figure 1-13 shows a close-up of the 4xSDSL faceplate.

Table 1-7 describes the 4xSDSL LED indicator functions.

Table 1-7: STU-C Line Card LED Indicators

LED	State	Function
STATUS	Green slow blinking	The self-test is in progress.
	Green fast blinking	The image download is in progress.
	Green solid	The status is OK.
	Red	The self-test or line card has failed.
	Off	The ATU-C line card has a power failure.
ACTIVE	Green solid	The line card is activated.
	Off	The line card is not in service.
STU-C 1	Green solid	Modem 1 is trained.
	Green blinking	Training is in progress for modem 1.
	Off	Modem 1 is idle.
STU-C 2	Green solid	Modem 2 is trained.
	Green blinking	Training is in progress for modem 2.
	Off	Modem 2 is idle.
STU-C 3	Green solid	Modem 3 is trained.
	Green blinking	Training is in progress for modem 3.
	Off	Modem 3 is idle.
STU-C 4	Green solid	Modem 4 is trained.
	Green blinking	Training is in progress for modem 4.
	Off	Modem 4 is idle.

Figure 1-14 is a block diagram of the 4xSDSL.

DS3/2DS3 NI-2 Card Overview

The DS3/2DS3 NI-2 card

Figure 1-15 shows a close-up of the DS3/2DS3 NI-2 card faceplate.

The following list details the DS3/2DS3 NI-2 card faceplate features. The faceplate features are noted in Figure 1-15:

• Top and bottom locking levers with top and bottom locking tabs

• An ACO button and a maintenance RESET port are located at the top of the faceplate

• The left side of the card faceplate has three interface status LED groups that indicate the operational status of subtending host chassis and subtended node chassis. Each Cisco 6130 chassis that is configured for DS3 operation includes the following three interface status LED groups:

  • TRNK 1 -- Indicates the network trunk interface status of the subtending host chassis or the network interface status of a subtended node chassis that is connected to system I/O card BNC connectors J12 and J14.

  • SBTD 2 -- Indicates the network interface status of a subtended node chassis that is connected to system I/O card BNC connectors J8 and J1.

  • SBTD 3 -- Indicates the network interface status of a subtended node chassis that is connected to system I/O card BNC connectors J4 and J6.

Table 1-8 describes the interface status LED indicator functions:

Table 1-8: Interface Status LED Indicators

LED	State	Function
TEST	Amber solid	IOS software detects that an obtrusive test (loopback) is active on this interface.
	Off	IOS software does not detect obtrusive test activity.
RX1 STAT	Amber solid	The receiver detects a physical layer problem.
	Off	The receiver does not detect a physical layer problem.
TX2 STAT	Amber solid	The transmitter detects a physical layer problem.
	Off	The transmitter does not detect a physical layer problem.
RCLK	Green solid	Hardware detects an incoming clock signal.
	Off	Hardware does not detect an incoming clock signal.

1RX = receive 2TX = transmit

Table 1-9 describes the alarm status LED group indicator functions:

Table 1-9: Alarm Status LED Group Indicators

LED Group	LED	State	Function
System Alarm	CRITICAL	Red	When this LED is lit, a critical alarm is active.
	MAJOR	Red	When this LED is lit, a major alarm is active.
	MINOR	Amber	When this LED is lit, a minor alarm is active.
Card Status	POWER	Green	When this LED is lit, the NI-2 card has power.
	STATUS	Green	This LED indicates the operational health of the NI-2 card: When the LED is lit, there are no internal faults or problems. When the LED is not lit, the NI-2 card has not booted properly, or a problem is preventing normal operation.
	ACTIVE	Green	When lit, this LED indicates which NI-2 card is operating as the active network interface in the chassis.
Fan Alarm	FAN 1	--	This LED on the NI-2 card is inactive and always off. The fan status LED indicators are on the fan tray.
	FAN 2	--	This LED on the NI-2 card is inactive and always off. The fan status LED indicators are on the fan tray.

• The right side of a card faceplate includes a group of three connectors that provides operating system interface and internet ports:

  • CNSL--An RJ-45 connector for a DCE device that complies with the EIA/TIA-232 standard and that provides connection to a system console.

  • AUX--An RJ-45 connector for a DTE device that complies with the EIA/TIA-232 standard and that provides connection to an auxiliary function.

  • ENET--An RJ-45 10BaseT connector that complies with Ethernet standards and that provides connection to a system Ethernet. The ethernet interface has two green LEDs: ACT to indicate activity status and LNK to indicate link status. Table 1-10 describes the ENET interface LED indicator functions.

Table 1-10: ENET Interface LED Indicators

LED	State	Function
ACT	Green solid or blinking	When the LED is lit or blinking, Ethernet interface is active.
	Off	When the LED is unlit, the Ethernet interface is inactive.
LNK	Green solid	When the LED is lit, the Ethernet link is active.

Figure 1-16 is a block diagram of the DS3/2DS3 NI-2 card.

OC-3c/OC-3c NI-2 Card Overview

The OC-3c/OC-3c NI-2 card

• Connects to the xTU-C line cards through point-to-point serial data buses on the backplane

• Performs central processor, host, and system controller functions

• Contains the ATM switch fabric

• Provides the subtending interfaces to subtended Cisco 6130 with NI-2 system

• Controls timing and redundancy

• Provides CO facility alarm relay contact interfaces and an ACO button

• Provides operating status visual and audible indications

• Performs subtending and other control functions

• Provides the network OC-3c WAN trunk interface--Network connectors for OC-3c/OC-3c NI-2 cards are located on the faceplate. The OC-3c WAN trunk interface supports

  • SMF intermediate range.

  • MMF short range.

Figure 1-17 shows a close-up of the OC-3c/OC-3c NI-2 card faceplate.

The following list details the OC-3c/OC-3c NI-2 card faceplate features. The faceplate features are noted in Figure 1-17.

• Top and bottom locking levers with top and bottom locking tabs

• An ACO button and a maintenance RESET port are located at the top of the faceplate

• The left side of the card faceplate has two interface status LED groups that indicate the operational status of subtending host chassis and subtended node chassis. Each Cisco 6130 chassis that is configured for OC-3c operation includes the following two interface status LED groups:

  • TRNK 1--Indicates the network trunk interface status of the subtending host chassis or the network interface status of a subtended node chassis in a SMF or MMF subtended network configuration.

  • SBTD 2--Indicates the network interface status of a subtended node chassis in an SMF or MMF subtended network configuration.

Table 1-11 describes the interface status LED indicator functions:

Table 1-11: Interface Status LED Indicators

LED	State	Function
TEST	Amber solid	IOS software detects that an obtrusive test (loopback) is active on this interface.
	Off	IOS software does not detect obtrusive test activity.
RX STAT	Amber solid	The receiver detects a physical layer problem.
	Off	The receiver does not detect a physical layer problem.
TX STAT	Amber solid	The transmitter detects a physical layer problem.
	Off	The transmitter does not detect a physical layer problem.
RCLK	Green solid	Hardware detects an incoming clock signal.
	Off	Hardware does not detect an incoming clock signal.

Table 1-12 describes the alarm status LED group indicator functions:

Table 1-12: Alarm Status LED Group Indicators

LED Group	LED	State	Function
System Alarm	CRITICAL	Red	When this LED is lit, a critical alarm is active.
	MAJOR	Red	When this LED is lit, a major alarm is active.
	MINOR	Amber	When this LED is lit, a minor alarm is active.
Card Status	POWER	Green	When this LED is lit, the NI-2 card has power.
	STATUS	Green	This LED indicates the operational health of the NI-2 card: When the LED is lit, there are no internal faults or problems. When the LED is not lit, the NI-2 card has not booted properly, or a problem is preventing normal operation.
	ACTIVE	Green	When lit, this LED indicates which NI-2 card is operating as the active network interface in the chassis.
Fan Alarm	FAN 1	--	This LED on the NI-2 card is inactive and always off. The fan status LED indicators are on the fan tray.
	FAN 2	--	This LED on the NI-2 card is inactive and always off. The fan status LED indicators are on the fan tray.

• The right side of a card faceplate includes a group of three connectors that provides operating system interface and internet ports:

  • CNSL--An RJ-45 connector for a DCE device that complies with the EIA/TIA-232 standard and that provides connection to a system console.

  • AUX--An RJ-45 connector for a DTE device that complies with the EIA/TIA-232 standard and that provides connection to an auxiliary function.

  • ENET--An RJ-45 10BaseT connector that complies with Ethernet standards and that provides connection to a system Ethernet. The ethernet interface has two green LEDs: ACT to indicate activity status and LNK to indicate link status. Table 1-13 describes the ENET interface LED indicator functions.

Table 1-13: ENET Interface LED Indicators

LED	State	Function
ACT	Green solid or blinking	When the LED is lit or blinking, Ethernet interface is active.
	Off	When the LED is unlit, the Ethernet interface is inactive.
LNK	Green solid	When the LED is lit, the Ethernet link is active.

Figure 1-18 is a block diagram of the OC-3c/OC-3c NI-2 card.

Network Clocking Overview

The NI-2 card receives its network timing signal from any one of the following sources:

• A building-integrated timing source (BITS) clock. When a BITS clock is the network timing signal source, the Cisco 6130 chassis receives a clock signal through designated pins on the system I/O card and distributes the signal through the Cisco 6130 chassis backplane.

• An internal clock.

• DS3 or OC-3c network trunk interface. An NI-2 card synchronizes with the network timing source and provides a clock reference signal to line cards in the Cisco 6130 chassis and to subtended node chassis.

The NI-2 card controls distribution of two clock reference signals. One clock reference signal is supplied to the line cards; the other clock reference signal is supplied to a subtended node chassis NI-2 card. Therefore, the trunk port on each subtending host chassis obtains its clock reference signal for a network of subtended node chassis.

System I/O Card

A system I/O card

• Uses transmit and receive BNC coaxial cable network connections when interfacing with a DS3 network connection or subtending Cisco 6130 chassis using DS3/2DS3 NI-2 cards

• Provides relays and contact wire-wrap pins for dedicated CO facility operating alarms (DS3 or OC-3c systems) that are operated by Cisco IOS software

• Supports the aggregation of up to 12 additional subtended Cisco 6130 chassis, configured for DS3 operation, in a tree topology or in a daisy chain

• Provides the BITS clock

The system I/O card attaches to the two 2-mm HM card connectors, P3 and P9, on the Cisco 6130 backplane.

Figure 1-19 shows the location of the system I/O card on the chassis backplane.

Figure 1-20 shows a close-up of the system I/O card.

Table 1-14 describes the connectors and headers on the system I/O card.

An EMI shield is formed by the EMI fence, which is soldered in place on the system I/O card, and the EMI cover (see Figure 1-20). Printed circuit board fuses, relays, and surge protectors are shielded by two clear plastic covers: a safety shield and an ESD shield. The EMI cover and protective shields must be in place during Cisco 6130 with NI-2 system operation.

Front Cover

The Cisco 6130 ships with a front cover that must be installed and in place while the system is in operation, as shown in Figure 1-21.

Rear Cover

You can order and install an optional rear cover for the back of the Cisco 6130. The rear cover attaches to the back of the Cisco 6130 and restricts access to the backplane and cable connectors. To keep cables from interfering with the opening of the rear cover, the cables that come down from the top of the rack can be tie wrapped to the cover-mounting brackets.

Fan Tray

The system requires forced air cooling when you use a Cisco 6130 chassis. Therefore, you must install a fan tray with three fan modules below the chassis and leave 1 rack unit (RU) of space below the fan tray for intake plenum. Figure 1-22 shows the front view of the fan tray.

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Note   The fan tray must be bolted into the rack and connected to the chassis. If you are using multiple Cisco 6130 chassis in your configuration, a fan tray must be installed under each chassis.

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There is an LED on the front each of the three fan modules. If the LED is

• Green--The fan tray is operational.

• Not green--The fan tray is not operational and is in alarm mode. See "Troubleshooting," for corrective action.

Note   For preventive maintenance, see "Upgrading and Maintaining the Cisco 6130 System."

Figure 1-23 shows the backplane of the fan tray.

Table 1-15 describes the connectors on the backplane of the fan tray.

Cisco 6120 Chassis Overview

POTS frequencies are sent to the voice switch and xDSL frequencies are routed to the ATU-C line cards, depending on the configuration you install. The Cisco 6120 is electrically passive. Therefore, a complete loss of power to the Cisco 6130 with NI-2 system does not affect voice transport to the Public Switched Telephone Network (PSTN).

To colocate voice-switching equipment through the CO MDF, use separate 50-pin Champ connectors to cable to POTS signals. Special cables are required for this connection. Obtain these cables from Cisco, or build the cables according to a standard, accepted cable specification, for example, the Nortel NT-T100 series cable specification. For more information on the required cables, see "Cable and Port Mapping Specifications."

Note   Refer to the appropriate vendor documentation for information on the third-party POTS splitter.

Cisco 6120 Card Compartment

The card compartment includes 22 slots. Table 1-16 describes each card slot assignment for the Cisco 6120.

Table 1-16: Cisco 6120 Card Slot Assignments

Card Slot	Card Assignment
1 to 10	DMT POTS cards only
11	Blank faceplate1
12	Screwed-down faceplate
13 to 22	DMT POTS cards only

1Blank faceplates must be installed in all open slots of each chassis.

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Note   You can purchase blank faceplates for empty Cisco 6120 card slots.

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Figure 1-24 identifies the Cisco 6120 card slots. Each slot on a chassis is numbered along the top of the chassis. In this guide, the slot numbers are shown on the cards for easy reference and readability. These slots are referred to in subsequent sections of this chapter and elsewhere in this guide.

Cisco 6120 Backplane

Figure 1-25 shows the backplane of the Cisco 6120.

Table 1-17 describes the connectors on the backplane of the Cisco 6120.

The two additional data connections (J1 and J2) are used only in a Direct Connect configuration. Figure 1-26 shows the location of the Cisco 6120 data, voice, and line connections.

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Note   Connectors J1 through J6 in Figure 1-26 are not used for this configuration.

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Cisco 6120 Cards

The DMT POTS card separates ADSL data from the POTS signals.

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Note   When installing a Cisco 6130 chassis in a Direct Connect with a POTS splitter configuration, only the 8 kHz DMT POTS card is supported.

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Figure 1-27 shows the DMT POTS card faceplate.

Management Software

You can provision and manage the Cisco 6130 with NI-2 system through the following management software:

• Cisco Internet Operating System (IOS) Release 12.1(2)DA--A command-line interface (CLI) that is available for network element provisioning.

• Cisco DSL Manager (CDM) Release 3.2--A graphical user interface (GUI) that runs on a Sun SPARCstation and is a complete Simple Network Management Protocol (SNMP)-based element management system with fault, configuration, and performance reporting capabilities.

The supported alarms that are generated by the management software are

• CRITICAL--A critical visual alarm condition is indicated when the CRITICAL LED in the NI-2 card faceplate lights.

  • When a critical alarm occurs, the critical visual and audible alarm relays are activated.

  • A critical alarm affects many or all subscribers that are connected to the node (for example, failure of the NI-2 card or the trunk can cause a critical alarm).

  • Critical alarms clear after you fix the condition that triggered the alarm.

  • Audible alarms are turned off when you press the ACO button on the NI-2 card faceplate.

• MAJOR--A major visual alarm condition is indicated when the MAJOR LED in the NI-2 card faceplate lights.

  • When a major alarm occurs, the major visual and audible alarm relays are also activated.

  • Several subscribers that are connected to the node are affected.

  • Major alarms clear after you fix the condition that triggered the alarm.

  • Audible alarms are turned off when you press the ACO button on the NI-2 card faceplate.

• MINOR--A minor visual alarm condition is indicated when the MINOR LED in the NI-2 card faceplate lights.

  • When a minor alarm occurs, the minor visual and audible alarm relays are also activated.

  • A small number of subscribers that are connected to the node are affected.

  • Minor alarms clear after you fix the condition that triggered the alarm.

  • Audible alarms are turned off when you press the ACO button on the NI-2 card faceplate.

If you wire visual and audible alarm relay contacts to CO facility devices (remote lights or bells), alarms can be installed at any location within the facility.

The visual and audible alarm relays are located on the system I/O card, but the NI-2 card hardware operates them. The visual alarms clear after you fix the problem that triggered the alarm. The audible alarms can be disabled by pressing the ACO button on the NI-2 card or clearing the alarm in the AIOS software.

For more information on alarms that are generated in the management software, see "Troubleshooting."

Posted: Fri Aug 11 15:38:12 PDT 2000
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