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This chapter provides an overview of the Cisco 6160 digital subscriber line (DSL) access concentrator and describes system hardware components. The chapter is arranged as follows:
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Warning For translations of the safety warnings in this chapter, see "Translated Safety Warnings." |
The Cisco 6160 is a member of a family of DSL products that provides end-to-end service, transporting data among subscriber homes or offices, the telephone central office (CO) facility, and the networks beyond. The Cisco DSL family includes the following products:
The Cisco 6160 (Figure 1-3, Figure 1-4, and Figure 1-5) can be operated as a carrier class DSLAM with asymmetric digital subscriber line (ASDL), symmetric digital subscriber line (SDSL), and integrated services digital network (ISDN) digital subscriber line (IDSL) interfaces. The Cisco 6160 is intended for use in North American central office facilities. The chassis is designed to accept multiple types of xDSL line cards, which can be mixed in various applications. The chassis has 32 short slots for line cards and two double-length slots for NI-2 cards. The chassis is mountable in a standard 23-inch NEBS 7-foot rack.
The Cisco 6160 DSLAM provides end-to-end service by handling voice or data traffic, or both, between a subscriber home or office, a telephone central office (CO) facility, and various networks. The Cisco 6160 DSLAM concentrates all traffic onto a single high-speed WAN trunk for transport to the Internet or to the corporate intranet.
The Cisco 6160 DSLAM uses asymmetric digital subscriber line (ADSL) technology to support up to 256 subscribers connected either directly or through a POTS splitter chassis. Filters separate voice and data signals when subscribers are connected to the DSLAM through a POTS splitter chassis. Cables connected to the POTS splitter route ADSL digital data signals to line cards in the Cisco 6160 chassis and voice signals to the CO facility switching network.
In addition to the line cards and the NI-2 card, the Cisco 6160 DSLAM accommodates a system I/O card that is installed on its backplane. The I/O card provides DS3 ports for OC-3c/2DS3 and DS3/2DS3 NI-2 configurations. The I/O card also provides a utility connector that supports remote alarm indications and network timing connections.
The second-generation network interface module (NI-2) for Cisco DSLAMs is a system processor module. The NI-2 card is available in several hardware configurations:
An NI-2 module is installed in a Cisco 6160 chassis and performs central processor, host, and system controller functions. The NI-2 runs and is controlled by Cisco IOS software. Network interfaces for DS3/2DS3 type NI-2 modules are on the I/O card at the rear of the chassis. In the case of the OC-3c/OC-3c and OC-3c/2DS3 types, the NI-2 faceplate provides the required optical network interfaces.
This section describes the line cards that will be available for the Cisco 6160 during the first release cycle. It also explains how different line cards types can be used in a single chassis.
The Flexi card supports 4 subscriber ports per card; the card can be configured for either CAP or DMT line encoding. CAP features are consistent with release 3.0, with configurable line rates up to 7188 kbps downstream and 1168 kbps upstream. DMT features autodetection of the CPE type and capabilities, compliance with ANSI T1.413 issue 2 (ATM mode), G.992.1 Annex A, G.992.2 Annex A, and configurability between G.lite and G.dmt/T1.413.
The symmetric digital subscriber line (SDSL) line card supports 4 subscriber ports per card, with configurable line rates up to 1168 kbps in both directions. The SDSL card uses 2B1Q line encoding and complies with the ITU G.991.1 standard.
You can install line cards of two or more different types in a single Cisco 6160 chassis. However, mixing different types of cards (Flexi ADSL, SDSL, and/or IDSL) on the same side of the chassis might result in decreased performance of the loop. Some line coding technologies may not be spectrally compatible with each other in the same binder group or cable, even if they are only together within the central office (CO). When you install different line card types in the same chassis half, overlapping frequency spectrums in the same binder can cause a negative performance impact.
To minimize potential performance degradation in the binder, install different line card types in separate halves of the chassis. For example, if you install Flexi ADSL cards on the left side of the chassis (slots 1 to 9 or 19 to 27), you should install IDSL and/or SDSL cards on the right side (slots 12 to 18 or 28 to 34). You can install IDSL and SDSL cards on the same side of the chassis because they implement the same line encoding technology (2B1Q).
For more information on spectral compatibility, refer to ANSI T1E1.4/2000-002R2, the Draft Proposed American National Standard, Spectrum Management for Loop Transmission Systems.
You can link together up to 13 Cisco 6160 chassis so that they can be served by a single network trunk port. This is called subtending. Subtending saves money by reducing the number of ports needed in the aggregator or back-haul network to which the Cisco 6160s are connected.
Subtending is accomplished through the use of WAN interfaces (in this release, OC-3c or DS3). In a subtending arrangement, each chassis is connected by a WAN interface to the chassis above it in the subtending hierarchy, or, if the chassis is at the top of the hierarchy, to the network trunk. Each chassis is connected by one or more WAN interfaces to those below it in the hierarchy.
Two subtending configurations are possible:
For each chassis in a subtended group to have fair access to the shared trunk, the chassis must have a unique ID number. The originating chassis places this ID number in the GFC field of the ATM header of each cell; this ID number is then used to forward cells up the tree to the network trunk.
The distance allowed between subtended nodes is determined by the WAN interface. The subtending feature is not intended to provide wide-area connectivity among nodes.

Subtended nodes must be managed as separate units. For details on configuring subtending, refer to the Configuration Guide for Cisco DSLAMs with NI-2.
Table 1-1 lists physical, environmental and electrical specifications of the Cisco 6160 system. Table 1-2 lists agency certifications and compliances. The Cisco 6160 is an FCC Class A digital device.
| Specification | Description |
Components | 34-slot card cage Backplane 2 power module compartments 1 blower compartment 1 air filter compartment 1 I/O card mounting area (on backplane) |
Dual inputs, each -48 VDC Tolerance limits: -40.5 to -75 VDC Maximum input current: 35A (circuit breaker rating) | |
Maximum input power of a fully loaded chassis1 | 1280W |
4369 Btu/hour | |
Height: 18.35 in. (46.6 cm) Width: 21.35 in. (54.2 cm) (mounting brackets not included) Depth: 11.8 in. (30.0 cm) | |
Weight with no components2 | 40 lb (18.2 kg) |
Weight fully loaded1 | 95 lb (43.2 kg) |
Short term: 23° to 122° (-5° to 50° C) Long term: 41° to 104° F (5° to 40° C) | |
Nonoperating temperature | -40° to 158° F (-40° to 70° C) |
5% to 90% relative humidity noncondensing | |
-196.85 to 10,498.7 ft (-60 to 3200 m) | |
60 dB at normal fan speed |
| Category | Description |
FCC 47CFR15:1997 Class A | |
NEBS level 3, GR-1089-CORE | |
NEBS level 3, GR-63-CORE | |
UL 1950 |
This section contains statements on Cisco 6160 compliance to the emissions standards of the United States, Canada, and Japan.
Statement for the United States: FCC Class A
Modifying the equipment without Cisco's authorization may result in the equipment no longer complying with FCC requirements for Class A or Class B digital devices. In that event, your right to use the equipment may be limited by FCC regulations, and you may be required to correct any interference to radio or television communications at your own expense.
Statements for Canada
English: This Class A digital apparatus complies with Canadian ICES-003.
French: Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
The Cisco 6160 DSLAM consists of circuitry and connections that reside within a chassis or enclosure that allows modular insertion and removal of the various field-replaceable units (FRUs). The chassis consists of a card cage with slots for 32 line cards and one or two NI-2 (network interface) cards; a backplane; a set of connectors that serve subscriber lines with or without plain old telephone service (POTS); connectors to accommodate an I/O card; and compartments for two power modules, a blower assembly, and an air filter. The chassis is designed for ETS 600 or 23-inch rack-mounting.
Figure 1-3 shows the front view of a Cisco 6160 chassis with OC-3c/OC-3c WAN interfaces. Figure 1-4 shows a front view of a Cisco 6160 chassis with DS3/2DS3 interfaces. Figure 1-5 shows a front view of a Cisco 6160 chassis with OC-3c/2DS3 interfaces.


Tools are required for access to components in the Cisco 6160 chassis. You must use a screwdriver to remove cards, PEMs, or the blower tray from the chassis. This discourages unauthorized persons from exposing the backplane, which can contain hazardous voltages. Figure 1-6 shows a locking tab on a Cisco 6160 card. You must turn the tab with a screwdriver before you can use the extractor lever to remove the card from the chassis.

The card cage has four compartments for line cards and two slots for NI-2 cards. The slots are numbered as follows:
All Cisco 6160 line cards can be installed and removed while the rest of the system continues to operate.
The NI-2 card and line cards are described later in this chapter.
Located behind the card cage is a backplane that provides the following services:
Eleven female RJ-21 (Champ) subscriber connectors are located on the back of the chassis. These 50-pin sockets provide the DSL subscriber connections. Each subscriber connector serves three line card slots.
Each subscriber connector is equipped with a latch at one end and a screw fastener at the other end. When you disconnect a cable from a subscriber connector, lift the end of the connector with the screw fastener first; the other end of the connector then disengages easily. If you try to lift the latch end first or to pull the cable straight off the connector, it will not release.
The subscriber connectors are numbered JC1 to JC11. Table 1-3 shows how subscriber connectors correspond to card slots and ports. In the table, an asterisk (*) indicates a port that is not available on 4-port line cards.
Pin assignments for the subscriber connectors are shown in Appendix A.
| SC1 | Slot | Port | SC Pins | SC1 | Slot | Port | SC Pins | SC1 | Slot | Port | SC Pins | SC1 | Slot | Port | SC Pins |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
JC1 | 1 | 1 | 1, 26 | JC2 | 5 | 1 | 9, 34 | JC3 | 9 | 1 | 17, 42 | JC5 | 15 | 1 | 1, 26 |
2 | 2, 27 | 2 | 10, 35 | 2 | 18, 43 | 2 | 2, 27 | ||||||||
3 | 3, 28 | 3 | 11, 36 | 3 | 19, 44 | 3 | 3, 28 | ||||||||
4 | 4, 29 | 4 | 12, 37 | 4 | 20, 45 | 4 | 4, 29 | ||||||||
*5 | 5, 30 | *5 | 13, 38 | *5 | 21, 46 | *5 | 5, 30 | ||||||||
*6 | 6, 31 | *6 | 14, 39 | *6 | 22, 47 | *6 | 6, 31 | ||||||||
*7 | 7, 32 | *7 | 15, 40 | *7 | 23, 48 | *7 | 7, 32 | ||||||||
*8 | 8, 33 | *8 | 16, 41 | *8 | 24, 49 | *8 | 8, 33 | ||||||||
2 | 1 | 9, 34 | 6 | 1 | 17, 42 | JC4 | 12 | 1 | 1, 26 | 16 | 1 | 9, 34 | |||
2 | 10, 35 | 2 | 18, 43 | 2 | 2, 27 | 2 | 10, 35 | ||||||||
3 | 11, 36 | 3 | 19, 44 | 3 | 3, 28 | 3 | 11, 36 | ||||||||
4 | 12, 37 | 4 | 20, 45 | 4 | 4, 29 | 4 | 12, 37 | ||||||||
*5 | 13, 38 | *5 | 21, 46 | *5 | 5, 30 | *5 | 13, 38 | ||||||||
*6 | 14, 39 | *6 | 22, 47 | *6 | 6, 31 | *6 | 14, 39 | ||||||||
*7 | 15, 40 | *7 | 23, 48 | *7 | 7, 32 | *7 | 15, 40 | ||||||||
*8 | 16, 41 | *8 | 24, 49 | *8 | 8, 33 | *8 | 16, 41 | ||||||||
3 | 1 | 17, 42 | JC3 | 7 | 1 | 1, 26 | 13 | 1 | 9, 34 | 17 | 1 | 17, 42 | |||
2 | 18, 43 | 2 | 2, 27 | 2 | 10, 35 | 2 | 18, 43 | ||||||||
3 | 19, 44 | 3 | 3, 28 | 3 | 11, 36 | 3 | 19, 44 | ||||||||
4 | 20, 45 | 4 | 4, 29 | 4 | 12, 37 | 4 | 20, 45 | ||||||||
*5 | 21, 46 | *5 | 5, 30 | *5 | 13, 38 | *5 | 21, 46 | ||||||||
*6 | 22, 47 | *6 | 6, 31 | *6 | 14, 39 | *6 | 22, 47 | ||||||||
*7 | 23, 48 | *7 | 7, 32 | *7 | 15, 40 | *7 | 23, 48 | ||||||||
*8 | 24, 49 | *8 | 8, 33 | *8 | 16, 41 | *8 | 24, 49 | ||||||||
JC2 | 4 | 1 | 1, 26 | 8 | 1 | 9, 34 | 14 | 1 | 17, 42 | JC6 | 34 | 1 | 1, 26 | ||
2 | 2, 27 | 2 | 10, 35 | 2 | 18, 43 | 2 | 2, 27 | ||||||||
3 | 3, 28 | 3 | 11, 36 | 3 | 19, 44 | 3 | 3, 28 | ||||||||
4 | 4, 29 | 4 | 12, 37 | 4 | 20, 45 | 4 | 4, 29 | ||||||||
*5 | 5, 30 | *5 | 13, 38 | *5 | 21, 46 | *5 | 5, 30 | ||||||||
*6 | 6, 31 | *6 | 14, 39 | *6 | 22, 47 | *6 | 6, 31 | ||||||||
*7 | 7, 32 | *7 | 15, 40 | *7 | 23, 48 | *7 | 7, 32 | ||||||||
*8 | 8, 33 | *8 | 16, 41 | *8 | 24, 49 | *8 | 8, 33 | ||||||||
JC6 | 18 | 1 | 9, 34 | JC8
| 22 | 1 | 1, 26 | JC9
| 26 | 1 | 9, 34 | JC10 | 30 | 1 | 17, 42 |
2 | 10, 35 | 2 | 2, 27 | 2 | 10, 35 | 2 | 18, 43 | ||||||||
3 | 11, 36 | 3 | 3, 28 | 3 | 11, 36 | 3 | 19, 44 | ||||||||
4 | 12, 37 | 4 | 4, 29 | 4 | 12, 37 | 4 | 20, 45 | ||||||||
*5 | 13, 38 | *5 | 5, 30 | *5 | 13, 38 | *5 | 21, 46 | ||||||||
*6 | 14, 39 | *6 | 6, 31 | *6 | 14, 39 | *6 | 22, 47 | ||||||||
*7 | 15, 40 | *7 | 7, 32 | *7 | 15, 40 | *7 | 23, 48 | ||||||||
*8 | 16, 41 | *8 | 8, 33 | *8 | 16, 41 | *8 | 24, 49 | ||||||||
JC7
| 19 | 1 | 1, 26 | 23 | 1 | 9, 34 | 27 | 1 | 17, 42 | JC11 | 31 | 1 | 1, 26 | ||
2 | 2, 27 | 2 | 10, 35 | 2 | 18, 43 | 2 | 2, 27 | ||||||||
3 | 3, 28 | 3 | 11, 36 | 3 | 19, 44 | 3 | 3, 28 | ||||||||
4 | 4, 29 | 4 | 12, 37 | 4 | 20, 45 | 4 | 4, 29 | ||||||||
*5 | 5, 30 | *5 | 13, 38 | *5 | 21, 46 | *5 | 5, 30 | ||||||||
*6 | 6, 31 | *6 | 14, 39 | *6 | 22, 47 | *6 | 6, 31 | ||||||||
*7 | 7, 32 | *7 | 15, 40 | *7 | 23, 48 | *7 | 7, 32 | ||||||||
*8 | 8, 33 | *8 | 16, 41 | *8 | 24, 49 | *8 | 8, 33 | ||||||||
20 | 1 | 9, 34 | 24 | 1 | 17, 42 | JC10
| 28 | 1 | 1, 26 | 32 | 1 | 9, 34 | |||
2 | 10, 35 | 2 | 18, 43 | 2 | 2, 27 | 2 | 10, 35 | ||||||||
3 | 11, 36 | 3 | 19, 44 | 3 | 3, 28 | 3 | 11, 36 | ||||||||
4 | 12, 37 | 4 | 20, 45 | 4 | 4, 29 | 4 | 12, 37 | ||||||||
*5 | 13, 38 | *5 | 21, 46 | *5 | 5, 30 | *5 | 13, 38 | ||||||||
*6 | 14, 39 | *6 | 22, 47 | *6 | 6, 31 | *6 | 14, 39 | ||||||||
*7 | 15, 40 | *7 | 23, 48 | *7 | 7, 32 | *7 | 15, 40 | ||||||||
*8 | 16, 41 | *8 | 24, 49 | *8 | 8, 33 | *8 | 16, 41 | ||||||||
21 | 1 | 17, 42 | JC9 | 25 | 1 | 1, 26 | 29 | 1 | 9, 34 | 33 | 1 | 17, 42 | |||
2 | 18, 43 | 2 | 2, 27 | 2 | 10, 35 | 2 | 18, 43 | ||||||||
3 | 19, 44 | 3 | 3, 28 | 3 | 11, 36 | 3 | 19, 44 | ||||||||
4 | 20, 45 | 4 | 4, 29 | 4 | 12, 37 | 4 | 20, 45 | ||||||||
*5 | 21, 46 | *5 | 5, 30 | *5 | 13, 38 | *5 | 21, 46 | ||||||||
*6 | 22, 47 | *6 | 6, 31 | *6 | 14, 39 | *6 | 22, 47 | ||||||||
*7 | 23, 48 | *7 | 7, 32 | *7 | 15, 40 | *7 | 23, 48 | ||||||||
*8 | 24, 49 | *8 | 8, 33 | *8 | 16, 41 | *8 | 24, 49 |
| 1SC = subscriber connector. * In this release, there are 4 ports per line card. Ports 4 through 7 will be used in a future release. |
The auxiliary connectors on the back of the chassis, AUX_1 and AUX_2, are not used in this release. Do not remove the metal covers that protect the connectors.
The I/O card, shown in Figure 1-7, is located on the back of the Cisco 6160 chassis. It has a sheet-metal cover.
The I/O card provides three DS3 interfaces and a set of contacts for alarm relay and building-integrated timing source (BITS) clock circuits. Each DS3 interface consists of two vertically paired BNC connectors---one for receive, one for transmit. (The OC-3c versions of the NI-2 card have optical connectors for the trunk and subtending ports built into their faceplates, so no optical connectors are needed on the I/O card.) The alarm relay and BITS contacts are a set of 30 posts for wire wrap connections.
Refer to "Pin Assignments," for the pinout of the wire wrap connector on the I/O card.

The blower assembly and the PEMs are described in the subsections that follow.
A blower assembly is located above the card cage. The assembly houses four blowers. The blowers pull cooling air from the bottom front of the chassis and through the card cage.
An air filter is located at the bottom of the chassis. The air filter must be removed and cleaned periodically. Refer to Chapter 3, "Preventive Maintenance" for complete instructions on cleaning the air filter.
The blowers have two speeds. By default, they run at low speed. The system turns up the blower speed when
The blower speed returns to normal (low speed) when
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Caution The blowers must run continuously. The system might suffer thermal damage if the blowers stop for more than 5 minutes. |
A status LED is located on the blower assembly faceplate. Table 1-4 describes the LED states.
| LED Color | Blower Status |
|---|---|
Red | One or more blowers have failed. Replace the blower assembly. |
Green | The blower assembly is operating normally. |
Off | One of the following:
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Note The Fan1 and Fan2 LEDs on the NI-2 faceplate do not function in the Cisco 6160. |
A blower assembly is shown in Figure 1-8. The blower assembly weighs 10.5 lb (4.76 kg).

Each Cisco 6160 chassis is equipped with one or two -48 VDC power entry modules (PEMs), which distribute DC power within the chassis. The Cisco 6160 needs only one active PEM to operate; if two PEMs are installed, the second PEM serves as a hot backup to the first PEM.
Each PEM should be connected to a single DC power source. For full power redundancy, two PEMs must be installed, and two separate DC power sources must be connected to the chassis.
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Warning This Cisco 6160 unit might have more than one power supply connection; all connections must be removed completely for you to completely remove power from the unit. |
DC power (-48V) enters the chassis through the terminal blocks on the rear of the chassis. Power is transmitted through the backplane to the PEMs.
The PEMs reside on the right side of the chassis, and they are installed and accessed from the front. The bottom slot holds PEM 1; the top slot holds PEM 2.
In a system with two PEMs, you can remove and replace each PEM while the system continues to operate. However, a system with a single PEM must be powered down before you remove the PEM.
A PEM is shown in Figure 1-9. Each PEM weighs 6 lb (2.72 kg).

The following fixtures are present on the front of each PEM:
To turn off a Cisco 6160 that has two PEMs, you must flip the circuit breakers on both PEMs to 0 (off).
| LED | Color | Meaning |
|---|---|---|
Input OK | Green | -48V power is available to the chassis. |
Out Fail | Red | One or both of the following conditions exists:
Troubleshoot the PEM as described in Chapter 4, "Troubleshooting." |
The main air intake vents are located at the bottom front of the chassis, as indicated in Figure 1-10. The intake vent for each PEM is located at the bottom of the PEM's front panel. All air exhaust vents are located on the rear of the chassis at the top. Do not obstruct the intake and exhaust vents in any way.
An electrostatic discharge (ESD) jack is located on the front of the chassis on the lower left edge. (See Figure 1-3, Figure 1-4, or Figure 1-5.) Before removing any components from the chassis or installing any components, ground yourself by connecting a wrist or ankle strap to the ESD jack.
This section describes all versions of the second-generation network interface (NI-2) card. The NI-2 cards operate in the Cisco 6260, Cisco 6130, and Cisco 6160 systems.
A Cisco 6160 chassis can accommodate one or two NI-2 cards.
The OC-3c/OC-3c version of the NI-2 card provides the following:
The NI-2 is a 12.38 inch by 8.5 inch (31.45 cm by 21.59 cm) module that resides in slots 10 and 11, in the center of the Cisco 6160 chassis. The faceplate is marked NI-2-155MM-155MM (multimode version) or NI-2-155SM-155SM (single-mode version). The faceplate, shown in Figure 1-11, includes the fixtures discussed in the paragraphs that follow.
Trunk and Subtending Ports
Two dual SC connectors are recessed into the NI-2 faceplate. The upper SC connector pair is an uplink; it can serve as either a network trunk port or, in a subtending arrangement, as the subtending interface to the chassis above this one in the hierarchy. The lower SC connector pair is for subtending only; it cannot serve as a trunk port.
Console and Auxiliary Ports
The console and auxiliary ports on the NI-2 are serial EIA/TIA-232 ports with RJ-45 connectors. See Appendix A, "Pin Assignments," for pinouts.
Ethernet Port
The Ethernet port on the NI-2 is a 10BaseT port with an RJ-45 connector. It connects the Cisco 6160 to its management station. See Appendix A, "Pin Assignments," for pinouts.
ACO Switch
The alarm cut-off (ACO) switch is a pushbutton located near the top of the NI-2 faceplate. Press the switch to turn off an audible alarm.
Reset Switch
The reset switch is recessed behind the faceplate to avoid accidental disturbance.

LED Indicators
The NI-2 faceplate has four sets of LEDs to indicate system, card, fan, and physical interface status. Table 1-6 tells you how to interpret the system-level LED indicators.
| LED | State | Function |
|---|---|---|
Critical Alarm | Red | Lights when a critical alarm is active. |
Major Alarm | Red | Lights when a major alarm is active. |
Minor Alarm | Amber | Lights when a minor alarm is active. |
Table 1-7 describes card-level LEDs.
| LED | State | Function |
|---|---|---|
Power | Green | The NI-2 is receiving power. |
Off | The NI-2 is not receiving power. | |
Status | Green | No internal faults or problems have been detected on the card. |
Off | The card has not booted properly or a problem was detected that prevents normal operation. | |
Active | Green | This NI-2 is operating as the active network interface in the chassis (important when redundant NI-2 is supported). |
Off | This NI-2 is not active. |
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Note The Fan1 and Fan2 LEDs on the NI-2 faceplate do not function in the Cisco 6160. Blower problems are indicated by the LED on the blower assembly faceplate and by alarms. |
Table 1-8 describes LEDs for the Ethernet port. The LEDs are located on the Ethernet connector.
| LED | State | Indication |
|---|---|---|
ACT (Ethernet Activity) | Green | Data is running over the Ethernet interface. |
Off | Data is not running over the Ethernet interface. | |
LNK (Ethernet Link Status) | Green | The Ethernet link is operative. |
Off | The Ethernet link is inoperative. |
Two identical sets of LEDs on the NI-2 faceplate report the status of the trunk and subtending WAN interfaces. These LED sets are labeled TRNK 1 and SBTD 2. Table 1-9 maps the LED sets to the software port numbers. Table 1-10 describes the trunk and subtending interface LEDs.
| LED Set | Software Port Number |
|---|---|
TRNK 1 | ATM0/1 |
SBTD 2 | ATM0/2 |
| LED | State | Indication |
|---|---|---|
Test | Amber | The software detects that an obtrusive test (loopback) is active on this interface. |
Off | The software does not detect any obtrusive test activity. | |
RX Stat | Amber | The receiver detects a physical layer problem (for example, LOF, LOP, or AIS). |
Off | No physical layer problems are detected. | |
TX Stat | Amber | The far end detects a problem with the local transmitter. |
Off | No problems with the local transmitter are detected by the far end. | |
RCLK | Green | The hardware detects an incoming clock signal. |
Off | The hardware detects no incoming clock signals. |
Table 1-11 lists the physical and electrical specifications of the single-mode and multimode versions of the OC-3c/OC-3c NI-2 card.
| Specification | Description | |
Internal hardware | 150-MHz RC64475 CPU | |
Dimensions | Height: 12.38 in. (31.45 cm) | |
Weight | 3.0 lb (1.36 kg) | |
Power consumption | 50W | |
Level 2 protocol | ATM | |
| Single Mode Card | Multimode Card | |
External interfaces | Two OC-3c/STM-1 (155-Mbps) single-mode ports | Two OC-3c/STM-1 (155-Mbps) multimode ports |
Connector type | SC-PC | SC-PC |
Fiber type | Intermediate reach single mode | Multimode |
Average transmitted power | -15 to -8 dBm | -20 to -14 dBm |
Average received power | -8 dBm | -11 dBm |
Transmission distance | Up to 20 km (12 miles) | Up to 2 km (1.2 miles) |
Wavelength | 1310 nm | 1300 nm |
The OC-3c/2DS3 version of the second-generation network interface (NI-2) card provides the following:
The NI-2 is a 12.38 inch by 8.5 inch (31.45 cm by 21.59 cm) module that resides in slots 10 and 11, in the center of the Cisco 6160 chassis. The faceplate is marked NI-2 OC3 MM/2XDS3 (multimode version) or NI-2 OC3 SM/2XDS3 (single-mode version). The faceplate, shown in Figure 1-12, includes the fixtures discussed in the paragraphs that follow.
Trunk and Subtending Ports
One dual SC connector is recessed into the NI-2 faceplate. This SC connector pair is an uplink; it can serve as either a network trunk port or, in a subtending arrangement, as the subtending interface to the chassis above this one in the hierarchy. The DS3 subtending ports are served by BNC connectors on the I/O card on the rear of the chassis.
Console and Auxiliary Ports
The console and auxiliary ports on the NI-2 are serial EIA/TIA-232 ports with RJ-45 connectors. See Appendix A, "Pin Assignments," for pinouts.
Ethernet Port
The Ethernet port on the NI-2 is a 10BaseT port with an RJ-45 connector. It connects the Cisco 6160 to its management station. See Appendix A, "Pin Assignments," for pinouts.
ACO Switch
The alarm cut-off (ACO) switch is a pushbutton located near the top of the NI-2 faceplate. Press the switch to turn off an audible alarm.
Reset Switch
The reset switch is recessed behind the faceplate to avoid accidental disturbance.

LED Indicators
The NI-2 faceplate has four sets of LEDs to indicate system, card, fan, and physical interface status. Table 1-12 tells you how to interpret the system-level LED indicators.
| LED | State | Function |
|---|---|---|
Critical Alarm | Red | Lights when a critical alarm is active. |
Major Alarm | Red | Lights when a major alarm is active. |
Minor Alarm | Amber | Lights when a minor alarm is active. |
Table 1-13 describes card-level LEDs.
| LED | State | Function |
|---|---|---|
Power | Green | The NI-2 is receiving power. |
Off | The NI-2 is not receiving power. | |
Status | Green | No internal faults or problems have been detected on the card. |
Off | The card has not booted properly or a problem was detected that prevents normal operation. | |
Active | Green | This NI-2 is operating as the active network interface in the chassis (important when redundant NI-2 is supported). |
Off | This NI-2 is not active. |
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Note The Fan1 and Fan2 LEDs on the NI-2 faceplate do not function in the Cisco 6160. Blower problems are indicated by the LED on the blower assembly faceplate and by alarms. |
Table 1-14 describes LEDs for the Ethernet port. The LEDs are located on the Ethernet connector.
| LED | State | Indication |
|---|---|---|
ACT (Ethernet Activity) | Green | Data is running over the Ethernet interface. |
Off | Data is not running over the Ethernet interface. | |
LNK (Ethernet Link Status) | Green | The Ethernet link is operative. |
Off | The Ethernet link is inoperative. |
Three identical sets of LEDs report the status of the trunk and subtending WAN interfaces. These LED sets are labeled TRNK 1, SBTD 2, and SBTD 3. Table 1-15 maps the LED sets to the software port numbers. Table 1-16 describes the trunk and subtending interface LEDs.
| LED Set | Port Number on I/O Card | Software Port Number |
|---|---|---|
TRNK 1 | --- | ATM0/1 |
SBTD 2 | Port 1 | ATM0/2 |
SBTD 3 | Port 2 | ATM0/3 |
| LED | State | Indication |
|---|---|---|
Test | Amber | The software detects that an obtrusive test (loopback) is active on this interface. |
Off | The software does not detect any obtrusive test activity. | |
RX Stat | Amber | The receiver detects a physical layer problem (for example, LOF, LOP, or AIS). |
Off | No physical layer problems are detected. | |
TX Stat | Amber | The far end detects a problem with the local transmitter. |
Off | No problems with the local transmitter are detected by the far end. | |
RCLK | Green | The hardware detects an incoming clock signal. |
Off | The hardware detects no incoming clock signals. |
Table 1-17 lists the physical and electrical specifications of the single-mode and multimode versions of the OC-3c/2DS3 NI-2 card.
| Specification | Description | |
Internal hardware | 150-MHz RC64475 CPU | |
Dimensions | Height: 12.38 in. (31.45 cm) | |
Weight | 3.0 lb (1.36 kg) | |
Power consumption | 50W | |
Level 2 protocol | ATM | |
| DS3 Ports (Subtending/Downstream) | | |
External interfaces | Two DS3 (44.736-Mbps) coax ports | |
Connector type | BNC1 | |
Impedance | 75 ohms (nominal) | |
Line encoding | B3ZS | |
Framing | Cbit parity, optionally PLCP with M23, otherwise Add Drop Multiplexer (ADM) | |
| OC-3c Port (Trunk/Upstream) | Single Mode Card | Multimode Card |
External interface | One OC-3c/STM-1 (155-Mbps) single-mode port | One OC-3c/STM-1 (155-Mbps) multimode port |
Connector type | SC-PC | SC-PC |
Fiber type | Intermediate reach single mode | Multimode |
Average transmitted power | -15 to -8 dBm | -20 to -14 dBm |
Average received power | -8 dBm | -11 dBm |
Transmission distance | Up to 20 km (12 miles) | Up to 2 km (1.2 miles) |
Wavelength | 1310 nm | 1300 nm |
| 1The BNC connectors are located on the I/O card on the back of the chassis. |
The DS3/2DS3 version of the second-generation network interface (NI-2) card provides the following:
The NI-2 is a 12.38 inch by 8.5 inch (31.45 cm by 21.59 cm) module that resides in slot 10 or slot 11, in the center of the Cisco 6160 chassis. The faceplate is marked NI-2-DS3/E3-DS3/E3. The faceplate, shown in Figure 1-13, includes the fixtures discussed in the paragraphs that follow.
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Note BNC connectors for the DS3 trunk and subtending ports are located on the I/O card on the back of the chassis. |
Console and Auxiliary Ports
The console and auxiliary ports on the NI-2 are serial EIA/TIA-232 ports with RJ-45 connectors. See Appendix A, "Pin Assignments" for pinouts.
Ethernet Port
The Ethernet port on the NI-2 is a 10BaseT port with an RJ-45 connector. It is used to connect the Cisco 6160 to its management station. See Appendix A, "Pin Assignments" for pinouts.
ACO Switch
The alarm cut-off (ACO) switch is a pushbutton located near the top of the NI-2 faceplate. Press the switch to turn off an audible alarm.
Reset Switch
The reset switch is recessed behind the faceplate to avoid accidental disturbance.

LED Indicators
The NI-2 faceplate has several sets of LEDs to indicate system, card, fan, and physical interface status. Table 1-18 tells you how to interpret the system-level LED indicators.
| LED | State | Function |
|---|---|---|
Critical Alarm | Red | Lights when a critical alarm is active. |
Major Alarm | Red | Lights when a major alarm is active. |
Minor Alarm | Amber | Lights when a minor alarm is active. |
Table 1-19 describes card-level LEDs.
| LED | State | Function |
|---|---|---|
Power | Green | The NI-2 is receiving power. |
Off | The NI-2 is not receiving power. | |
Status | Green | No internal faults or problems have been detected on the card. |
Off | The card has not booted properly, or a problem was detected that prevents normal operation. | |
Active | Green | This NI-2 is operating as the active network interface in the chassis (important when redundant NI-2 is supported). |
Off | This NI-2 is not active. |
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Note The Fan1 and Fan2 LEDs on the NI-2 faceplate do not function in the Cisco 6160. Blower problems are indicated by the LED on the blower assembly faceplate and by alarms. |
Table 1-20 describes LEDs for the Ethernet port. The LEDs are located on the Ethernet connector, which is on the NI-2 card.
| LED | State | Indication |
|---|---|---|
ACT (Ethernet Activity) | Green | Data is running over the Ethernet interface. |
Off | Data is not running over the Ethernet interface. | |
LNK (Ethernet Link Status) | Green | The Ethernet link is operative. |
Off | The Ethernet link is inoperative. |
Three identical sets of LEDs on the NI-2 faceplate report the status of the trunk and subtending WAN interfaces. These LED sets are labeled TRNK 1, SBTD 2, and SBTD 3. Table 1-21 maps the LED sets to the port numbers on the I/O card and to the software port numbers. Table 1-22 describes the trunk and subtending interface LEDs.
| LED Set | Port Number on I/O Card | Software Port Number |
|---|---|---|
TRNK 1 | Port 1 | ATM0/1 |
SBTD 2 | Port 2 | ATM0/2 |
SBTD 3 | Port 3 | ATM0/3 |
| LED | State | Indication |
|---|---|---|
Test | Amber | The software detects that an obtrusive test (loopback) is active on this interface. |
Off | The software does not detect any obtrusive test activity. | |
RX Stat | Amber | The receiver detects a physical layer problem (for example, LOF, LOP, or AIS). |
Off | No physical layer problems are detected. | |
TX Stat | Amber | The far end detects a problem with the local transmitter. |
Off | No problems with the local transmitter are detected by the far end. | |
RCLK | Green | The hardware detects an incoming clock signal. |
Off | The hardware detects no incoming clock signals. |
Table 1-23 lists the physical, electrical, and environmental specifications of the DS3/2DS3 NI-2 card.
| Specification | Description |
Internal hardware | 150 MHz RC64475 CPU |
Dimensions | Height: 12.38 in. (31.45 cm) |
Weight | 3.0 lb (1.36 kg) |
Power consumption | 50W |
Level 2 protocol | ATM |
External interfaces | Three DS3 (44.736-Mbps) coax ports |
Connector type | BNC1 |
Impedance | 75 ohms (nominal) |
Line encoding | B3ZS |
Framing | Cbit parity, optionally PLCP with M23, otherwise Add Drop Multiplexer (ADM) |
| 1The BNC connectors are located on the I/O card on the back of the chassis. |
This section describes the line cards available for use in the Cisco 6160 chassis. Additional line cards will be available in the future.
A Cisco 6160 chassis can accommodate up to 32 line cards. The line cards reside in slots 1 to 9 and slots 12 to 34.
The 4-port Flexi line card provides four subscriber lines that can be configured as either carrierless amplitude modulation/phase modulation (CAP) or discrete multitone (DMT), T1.413 Issue 2-compliant ATUC lines. CAP and DMT lines both support ADSL connections over POTS or direct connections. The card supports maximum data rates of 8032 kbps downstream and 864 kbps upstream on all four ports simultaneously.
The faceplate of the 4-port Flexi line card (see Figure 1-14) is marked 4X FLEXI. The LEDs on the faceplate are described in the paragraphs that follow.

Table 1-24 describes the LEDs on the Flexi line card.
| LED | State | Indication |
|---|---|---|
Status | Solid green | No internal faults or problems have been detected on this card. |
Slowly blinking green | Self-test is in progress. | |
Fast blinking green | Image is downloading. | |
Off | This card does not have power. | |
Solid red | This card has detected an internal fault or it cannot boot. | |
Active | Solid green | At least one port on this card is enabled. |
Off | This card is not in service. | |
CAP | Solid green | This card is in CAP mode. |
Off | This card is not in CAP mode. | |
DMT | Solid green | This card is in DMT mode. |
Off | This card is not in DMT mode. | |
G.LITE | Solid green | This card is in G.lite mode. |
Off | This card is not in G.lite mode. | |
A1, A2, A3, A4 (Ports) | Solid green | This port is active and trained with its CPE. |
Blinking green | This port is attempting to train with its CPE. | |
Off | This port is shut down or has not detected a CPE. |
Table 1-25 lists the specifications of the Flexi line card.
| Specification | DMT Mode | CAP Mode | G.lite Mode |
Standards supported | ITU G.dmt (G.992.1) | RADSL1 | ITU G.lite (G.992.2) |
Maximum data rates (per port)
| 8032 kbps 864 kbps | 7188 kbps 1168 kbps | 1536 kbps 512 kbps |
External interfaces | 4 (no connectors on card) | ||
Internal hardware | AMD 186-based 3.3V 18-MHz CPU 128-KB SRAM 512K flash | ||
Dimensions | Height: 6.07 in. (15.42 cm) | ||
Weight | 0.875 lb (0.4 kg) | ||
Power consumption | 20W | ||
| 1Rate-adaptive digital subscriber line. |
The 4-port SDSL line card provides four SDSL subscriber lines. The card supports maximum data rates of 1168 kbps downstream and 1168 kbps upstream on all four ports simultaneously.
The faceplate of the 4-port SDSL line card (see Figure 1-15) is marked 4X SDSL 2B1Q. The LEDs on the faceplate are described in the paragraphs that follow.

Table 1-26 describes the LEDs on the SDSL line card.
| LED | State | Indication |
|---|---|---|
Status | Solid green | No internal faults or problems have been detected on this card. |
Blinking green | Image is downloading. | |
Off | This card does not have power. | |
Blinking red | This card has detected an internal fault or it cannot boot. | |
Active | Solid green | This card has established communication with the NI-2. |
Off | This card is not in service. | |
STU-C 1, STU-C 2, STU-C 3, STU-C 4 (Ports) | Solid green | This port is active and trained with its CPE. |
Blinking green | This port is attempting to train with its CPE. | |
Off | This port is shut down or has not detected a CPE. |
Table 1-27 lists the specifications of the SDSL line card.
| Specification | Description |
Standards supported | ITU G.991.1 |
External interfaces | 4 (no connectors on card) |
Maximum data rates (per port)
| 1168 kbps 1168 kbps |
Line encoding | 2B1Q |
Internal hardware | AMD 186-based 3.3V 18-MHz CPU 128-KB SRAM 512K flash |
Dimensions | Height: 6.07 in. (15.42 cm) |
Weight | 0.875 lb (0.4 kg) |
Power consumption | 24W |
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Posted: Thu Jul 6 07:53:25 PDT 2000
Copyright 1989-2000©Cisco Systems Inc.