The Cisco 6100 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 6100 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) 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 6100 digital subscriber line access multiplexer (DSLAM) at the CO.
The Cisco 6100 with NI-2 system includes the following components:
Cisco 6100 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.
Management software—Provisions and manages the Cisco 6100 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 6100 with NI-2 system include the following items:
Supports ADSL
Carrierless amplitude and phase modulation (CAP) rate adaptive DSL (RADSL), ANSI T1.413 Issue 2 Discrete Multitone (DMT-2), and G.lite modem support
Small footprint that terminates up to 128 ADSL subscriber lines (using a Direct Connect configuration)
NEBS compliant, 23-inch chassis
Manageable through IOS or CDM
Subtend as many as twelve Cisco 6100 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
Subtended network
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 6100—Maximum of two chassis are allowed per rack.
Quad-port flexi ATU-C line cards (4xflexis)—Configure as CAP, DMT, or G.lite.
Cisco 6120 or a third-party POTS splitter.
CAP POTS cards (use in the 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 6100 chassis with 4xflexis. If you are installing more than one Cisco 6100 chassis, a fan tray must be installed under each chassis.
Thermal guard—Required when using the Cisco 6100 chassis with 4xflexis.
Warning Systems using a Cisco 6100 chassis must connect to the network through a POTS splitter.
Figure 1-1 shows the components for a Direct Connect with a POTS splitter configuration when you are using a Cisco 6100 chassis.
Figure 1-1 Direct Connect with a POTS Splitter Configuration
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.
Subtended Network Configuration
A subtended network configuration
Services and aggregates the data from one or more remotely located Cisco 6100 chassis into a subtending host chassis to take advantage of the data network interface on the subtending host chassis
Provides additional benefits by reducing the number of ATM edge-switch ports that are required to terminate the chassis
The term subtending refers to the host chassis, and subtended refers to the downstream chassis in a subtended network.
A subtended network configuration supports the following features:
The capacity to run data as fast as the speed of its subtended link. Uplink speed cannot exceed the OC-3c speed.
Four arbitration priorities, one for each quality of service (QoS) level. The supported QoS service levels are
Constant bit rate (CBR) for rate-limited services that require guaranteed bandwidth and bounded delay.
Variable bit rate real time (VBR-rt) for delay-sensitive voice and video services.
Variable bit rate nonreal time (VBR-nrt) for high-priority data services.
Unspecified bit rate (UBR) for low-priority data services.
Explicit forward congestion indication (EFCI) marking for available bit rate (ABR) service support.
Guaranteed frame rate (GFR).
Tree or daisy chain configurations for DS3 subtended Cisco 6100 chassis.
Daisy chain configurations for OC-3c subtended Cisco 6100 chassis.
Fair access to the trunk port for each subtended chassis.
A network trunk port that operates as fast as any subtended link.
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
The following sections detail the three types of subtending network connections.
Subtended Network Configuration with DS3/2DS3 NI-2 Cards
In a subtended network configuration using DS3/2DS3 NI-2 cards, you can subtend a Cisco 6100 chassis to four tiers, with up to twelve chassis, all connecting through one subtending host chassis to the ATM backbone).
Figure 1-2 shows typical DS3 configured Cisco 6100 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 6100 chassis in the lowest level are daisy chained. TRNK 1 refers to the single network trunk or Cisco 6100 chassis subtended network interface. SBTD 2 and SBTD 3 refer to the two Cisco 6100 chassis subtended interfaces. You make network interface connections at the system I/O card that is installed on the Cisco 6100 chassis backplane.
Figure 1-2 Subtended Network Configuration Using DS3/2DS3 NI-2 Cards
Note You can subtend Cisco 6100 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 6100 chassis that use
DS3/2DS3 NI-2 cards.
Cisco IOS software is not implemented to manage the primary Cisco 6100 chassis and all subtended Cisco 6100 chassis as a single large Cisco 6100 with NI-2 system. The initial release of Cisco 6100 with NI-2 system emphasizes bandwidth aggregation. Each Cisco 6100 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 1-3).
Figure 1-3 Subtended Network Configuration Using OC-3c/OC-3c NI-2 Cards
Cisco 6100 Chassis Overview
The Cisco 6100 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)
Cisco 6100 Card Compartment
The card compartment holds all circuitry that relates to the Cisco 6100 with NI-2 system operation. The card compartment contains 38 slots. Table 1-1 describes each card slot assignment for the Cisco 6100 chassis.
Table 1-1 Cisco 6100 Card Slot Assignments
Card Slot
Card Assignment
1 to 8
4xflexi
9
Blank faceplate1
10
NI-2 card
11
Blank faceplate
12
Jumper card
13 to 20
4xflexi
21 to 28
4xflexi
29 to 30
Blank faceplates
31 to 38
4xflexi
1Blank faceplates must be installed in all open slots of each chassis.
Note You can purchase blank faceplates for empty Cisco 6100 card slots.
Figure 1-4 identifies the Cisco 6100 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.
NoteFigure 1-4 shows the Cisco 6100 without
the required front cover installed. The front cover must be installed while the Cisco 6100 with NI-2
system is in operation.
Figure 1-4 Cisco 6100 Card Slots
Note There are primary and secondary slots for the NI-2 card. The secondary slot is
not used at this time (slot 11).
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.
Figure 1-5 Cisco 6100 Backplane
Table 1-2 describes the connectors and switches on the Cisco 6100 backplane.
Table 1-2 Cisco 6100 Backplane Connectors and Switches
Identifier
Name
Description
J45
—
Not in use.
J46
—
Not in use.
J47
—
Not in use.
J48
—
Not in use.
J39, J40, J41, J42, J43, J44
Data
Six 50-pin Champ connectors used to transfer data between the Cisco 6100 and the POTS splitter in a Direct Connect with a POTS splitter configuration.
P9, P3
System I/O card
Two 2-mm HM1 modular connectors (male on the Cisco 6100 and female on the system I/O card) used to connect the system I/O card.
P13
Power
A terminal block connector with four dual-power connections (-48V_A, -48V_B, and two -48RTN).
P14, P15, P17
—
Not in use.
P19
Ground jumper
A 4-position terminal block header providing optional connections between chassis ground and logic ground, or between chassis ground and -48 VDC return.
P16
xDSL protection
A 2 x 4 shorting jumper. Allows you to designate one or two backup (redundant) xTU-C line cards in all configurations involving ATU-C, 1:1 concentration (no modem pooling).
Note Currently, this jumper is not used.
P18
Analog test input
A 2-position header for connecting external ADSL test equipment.
SW1, SW2
ADSL slot configuration switches
Two DIP switches used to configure slots 20 and 38 as redundant ATU-C slots (1:1 configuration only).
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
If provisioned, the 4xflexi rate adapts to the maximum bit rate negotiable on the line. The maximum bit rate settings are provisioned in the management software.
The Cisco 6100 chassis can include up to 32 4xflexis for a total of 128 ADSL modem connections.
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 6100 with NI-2 system. Figure 1-6 shows the edge connector key with seven notches.
Figure 1-6 Edge Connector Key for the 4xflexi
Faceplate Features
Figure 1-7 shows a close-up of the 4xflexi faceplate.
Figure 1-7 Flexi ATU-C Line Card Faceplate
Table 1-3 describes the 4xflexi LED indicator functions.
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
Provides a DS3 ATM interface
Contains the ATM switch fabric
Provides the subtending interfaces to subtended Cisco 6100 with NI-2 systems
Controls timing and redundancy
Provides CO facility alarm relay contact interfaces and an alarm cut-off (ACO) button
Provides operating status visual and audible indications
Performs subtending and other control functions
The DS3/2DS3 NI-2 card functions are managed by Cisco IOS software. The IOS software operates and integrates controller, network trunk, and subtending functionality from this single card, which occupies slots 10 or 11 in a Cisco 6100 chassis.
The DS3/2DS3 NI-2 card operates in conjunction with network interfaces that are supplied by Bayonet-Neill-Concelman (BNC) connectors on the system I/O card installed on a Cisco 6100 backplane. A system I/O card
Provides transmit and receive BNC coaxial cable network connections when you subtend Cisco 6100 chassis using DS3/2DS3 NI-2 cards
Provides wire-wrap pins for dedicated CO facility operating alarms
Supports the aggregation of up to 12 additional subtended Cisco 6100 chassis, configured for DS3 operation, in a tree topology or in a daisy chain
Faceplate Features
Figure 1-9 shows a close-up of the DS3/2DS3 NI-2 card faceplate.
Figure 1-9 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 1-9:
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 6100 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 1-4 describes the interface status LED indicator functions:
Table 1-4 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.
Three alarm status LED groups are on the right side of the DS3/2DS3 NI-2 card faceplate:
System alarm LED group
Card status LED group
Fan alarm LED group
Table 1-5 describes the alarm status LED group indicator functions:
Table 1-5 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 1-6 describes the ENET interface LED indicator functions.
Table 1-6 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.
Block Diagram
Figure 1-10 is a block diagram of the DS3/2DS3 NI-2 card.
Figure 1-10 DS3/2DS3 NI-2 Card Block Diagram
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 6100 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.
The OC-3c/OC-3c NI-2 card functions are managed by Cisco IOS software. The IOS software operates and integrates controller, network trunk, and subtending functionality from this single card, which occupies slots 10 or 11 in a Cisco 6100 chassis.
The SMF and MMF OC-3c/OC-3c NI-2 cards operate in conjunction with network interfaces that are supplied by optical interface connectors on the OC-3c/OC-3c NI-2 card faceplate. The OC-3c/OC-3c NI-2 card faceplates have two optical connector pairs:
The top optical connector pair receives OC-3c ATM network transmit and receive trunk optical cables or OC-3c transmit and receive optical cables from the NI-2 card of a subtending host chassis.
The bottom optical connector pair accommodates receive and transmit optical cables from the NI-2 card of a subtended node chassis that is configured for operation in an OC-3c network.
Both the SMF and MMF OC-3c/OC-3c NI-2 cards support the aggregation of up to 12 additional subtended Cisco 6100 chassis in a daisy chain configuration.
Figure 1-11 shows a close-up of the OC-3c/OC-3c NI-2 card faceplate.
Figure 1-11 OC-3c/OC-3c NI-2 Card Faceplate
1
Ejector lever.
7
Model number
2
Locking tab.
8
System alarm LED group.
3
ACO button.
9
Card status LED group.
4
Maintenance RESET port.
10
Fan alarm LED group.
5
Interface status LED groups: Trunk 1 (TRNK 1) and Subtend 2 (SBTD 2). These groups show the status of the trunk and subtend connections.
11
CNSL—An RJ-45 receptacle that provides a serial connection to a system console.
6
Two optical interface connector pairs: Trunk 1 (TRNK 1) and Subtend 2 (SBTD 2)
TRNK 1—This connector pair is for network trunk interface TX and RX data optical cables. On a subtended node chassis, these network trunk interface TX and RX cables connect to SBTD 2 on the subtending host chassis.
SBTD 2—This connector pair is for subtended node chassis TX and RX data optical cables.
12
AUX—An RJ-45 receptacle that provides connection to an auxiliary device (such as a modem) used to remotely configure the system.
13
ENET—An RJ-45 10BaseT receptacle that complies with Ethernet standards and that provides connection to a system Ethernet.
Table 1-7 describes the LED group indicators and their functions.
Table 1-7 OC-3c/OC-3c NI-2 Card LED Group Indicators
Figure 1-12 is a block diagram of the OC-3c/OC-3c NI-2 card.
Figure 1-12 OC-3c/OC-3c NI-2 Card Block Diagram
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 6100 chassis receives a clock signal through designated pins on the system I/O card and distributes the signal through the Cisco 6100 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 6100 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 6100 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 6100 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 6100 backplane.
Figure 1-13 shows the location of the system I/O card on the chassis backplane.
Figure 1-13 System I/O Card Locations
Figure 1-14 shows a close-up of the system I/O card.
Figure 1-14 System I/O Card
Table 1-8 describes the connectors and headers on the system I/O card.
Table 1-8 System I/O Card Connectors and Headers
Identifier
Name
Description
J4, J8
DS3 subtend (RX)
A 75-ohm BNC connector that is used to connect a subtending host chassis to a DS3-configured subtended node chassis TX connector.
J6, J10
DS3 subtend (TX)
A 75-ohm BNC connector that is used to connect a subtending host chassis to a DS3-configured subtended node chassis RX connector.
J12
DS3 trunk I/O (RX)
A 75-ohm BNC connector that is used to connect the trunk network RX coaxial cable or used to connect a subtending host chassis to a DS3-configured subtended node chassis TX connector.
J14
DS3 trunk I/O (TX)
A 75-ohm BNC connector that is used to connect the trunk network TX coaxial cable or used to connect a subtending host chassis to a DS3-configured subtended node chassis RX connector.
P1
Alarm wire-wrap header1
Pin 1 (left)—AUD2_CRIT3_CO4
Pin 2—AUD_CRIT_NO5
Pin 3—AUD_CRIT_NC6
Pin 4—AUD_MAJ7_CO
Pin 5—AUD_MAJ_NO
Pin 6 (right)—AUD_MAJ_NC
P2
Alarm wire-wrap header
Pin 1 (left)—AUD_MIN8_CO
Pin 2—AUD_MIN_NO
Pin 3—AUD_MIN_NC
Pin 4—VIS9_CRIT_CO
Pin 5—VIS_CRIT_NO
Pin 6 (right)—VIS_CRIT_NC
P3
Alarm wire-wrap header
Pin 1 (left)—VIS_MAJ_CO
Pin 2—VIS_MAJ_NO
Pin 3—VIS_MAJ_NC
Pin 4—VIS_MIN_CO
Pin 5—VIS_MIN_NO
Pin 6 (right)—VIS_MIN_NC
P4
Alarm wire-wrap header
Pin 1 (left)—DOOR ALARM
Pin 2—Reserved
Pin 3—Reserved
Pin 4—Reserved
Pin 5—ACO10_NO
Pin 6 (right)—ACO GND11
P5
Alarm wire-wrap header
Pin 1 (left)—RX_BITS12_TIPA
Pin 2—RX_BITS_RINGA
Pin 3—RX_BITS_GND/GND
Pin 4—RX_BITS_TIPB
Pin 5—RX_BITS_RINGB
Pin 6 (right)—RX_BITS_GND/GND
K1, K2, K3, K4, K5, K6
Audible and visual alarm relays
Not in use.
1Each wire-wrap header is connected to a relay contact on the active NI-2 card in the Cisco 6100 chassis through the system I/O card connectors.
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 1-14). 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 6100 with NI-2 system operation.
Front Cover
The Cisco 6100 ships with a front cover that must be installed and in place while the system is in operation, as shown in Figure 1-15.
Figure 1-15 Cisco 6100 Front Cover Installation
Rear Cover
You can order and install an optional rear cover for the back of the Cisco 6100. The rear cover attaches to the back of the Cisco 6100 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.
The rear cover accessory kit contains
1 cover-mounting bracket (detached)
1 cover-mounting bracket (with the rear cover attached)
10 tie wraps
6 standoff screws
Fan Tray
The system requires forced air cooling when you use a Cisco 6100 chassis with 4xflexi installed. 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 1-16 shows the front view of the fan tray.
Figure 1-16 Fan Tray
Note The fan tray must be bolted into the rack and connected to the chassis. If you are using multiple Cisco
6100 chassis in your configuration, a fan tray must be installed under each chassis.
There is an LED on the front each of the three fan modules. If the LED is
Green—The fan module is operational.
Not green—The fan module is not operational and is in alarm mode. See "Troubleshooting," for corrective action.
Table 1-9 describes the connectors on the backplane of the fan tray.
Table 1-9 Fan Tray Backplane Connectors
Identifier
Name
Description
P1
Power
Terminal block connector with four dual power input connections (-48VA, -48VB, and two -48VB RTN).
P2
Alarm
A two-position header providing connections for fan tray alarm contacts.
J1
—
For future use.
Thermal Guard
A thermal guard is required when using the Cisco 6100 chassis with 4xflexis. A thermal guard is installed on top of the Cisco 6100 chassis.
Cisco 6120 Chassis Overview
POTS frequencies are sent to the voice switch and xDSL frequencies are routed to the ATU-C line cards. The Cisco 6120 is electrically passive. Therefore, a complete loss of power to the Cisco 6100 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 1-10 describes each card slot assignment for the Cisco 6120.
Table 1-10 Cisco 6120 Card Slot Assignments
Card Slot
Card Assignment
1 to 10
CAP or DMT1 POTS cards only
11
Blank faceplate2
12
Screwed-down faceplate
13 to 22
CAP or DMT POTS cards only
1If you are using line cards in DMT-2 mode in the Cisco 6100, use DMT POTS cards in the POTS splitter.
2Blank faceplates must be installed in all open slots of each chassis.
Note You can purchase blank faceplates for empty Cisco 6120 card slots.
Figure 1-18 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.
Figure 1-18 Cisco 6120 Card Slots
Cisco 6120 Backplane
Figure 1-19 shows the backplane of the Cisco 6120.
Figure 1-19 Cisco 6120 Backplane
Table 1-11 describes the connectors on the backplane of the Cisco 6120.
Table 1-11 Cisco 6120 Backplane Connectors
Identifier
Connector
Description
J1 through J6
—
Not in use.
J7 through J10
Voice
Four 50-position Champ connectors for connection to external voice terminating equipment.
J11 through J14
Line
Four 50-position Champ connectors for incoming xDSL voice/data connections.
J36
—
One 9-pin D-sub connector reserved for future use.
The two additional data connections (J1 and J2) are used only in a Direct Connect configuration. Figure 1-20 shows the location of the Cisco 6120 data, voice, and line connections.
Figure 1-20 Cisco 6120 Connections
Note Connectors J1 through J6 in Figure 1-20
are not used for this configuration.
Cisco 6120 Cards
The POTS cards separate ADSL data from the POTS signals. If you are using a Cisco 6100, these cards provide secondary line protection.
There are two types of POTS cards available for the Cisco 6120:
8 kHz CAP
8 kHz DMT
Table 1-12 shows the configurations where the POTS cards can operate.
You can provision and manage the Cisco 6100 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 Cisco 6100 includes CO alarm LEDs and relays that indicate system status. You can wire CO facility alarm relay contacts for either normally open or normally closed operation. 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."
