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This chapter describes the following Cisco DSLAM with NI-2 components and their status indicators:
The ATUC-1-4DMT is a discrete multi-tone (DMT) modulation high-density line module. This module is intended for use in Cisco 6100 series DSLAMs with NI-2 that contain NI-2 network interface modules running Cisco IOS software. The ATUC-1-4DMT line module contains four modems: two on the module motherboard and two on an attached daughter board.
The ATUC-1-4DMT line module supports
This line module is compatible with an NI-2 network interface (processor) module running Cisco IOS software in Cisco DSLAMs with NI-2. The Cisco NI-2 module is an advanced controller that operates the ATUC-1-4DMT line module in the enhanced data serial bus (DSB) mode. The ATUC-1-4DMT line module supports full ADSL data rates on all four modems.
To install an ATUC-1-4DMT module, follow the procedures in the "ATUC-1-4DMT Module Installation" section. To remove an ATUC-1-4DMT module, follow the procedures in the "ATUC-1-4DMT Module Removal" section. You do not need to disconnect power before inserting the module in or removing the module from a Cisco 6000 family with NI-2 DSLAM chassis.
ATUC-1-4DMT modules can be installed in
You do not need to disconnect power before inserting an ATUC-1-4DMT module into a Cisco 6100 series DSLAM with NI-2 module slot.
To install an ATUC-1-4DMT module in a chassis slot, perform the following steps.
 | Caution Static voltages as low as 30 volts can cause latent damage to circuitry. Be sure to observe all standard antistatic procedures (for example, wear a grounding strap). |
Step 1 Hold the ATUC-1-4DMT module vertically, with its faceplate toward you and its connector fingers facing the chassis module slot.
Step 2 Align the upper and lower edges of the ATUC-1-4DMT module with the upper and lower guides in the Cisco 6100 series DSLAM with NI-2 module slot.
Step 3 Slide the ATUC-1-4DMT module into its chassis module slot (Figure 5-1) by applying gentle pressure with both hands at the top and bottom of the faceplate until its printed circuit board connector fingers enter the backplane connector.
Step 4 Ensure that the faceplate locking tab on the ATUC-1-4DMT module is rotated to its unlocked position (Figure 5-2) and that the locking lever engages the upper front rail of the chassis (see Figure 5-1).
Step 5 Press the locking lever down. This action inserts the ATUC-1-4DMT module contact fingers into the backplane connector.
Step 6 Rotate the module locking tab with a small screwdriver. When the ATUC-1-4DMT module is inserted, the green STATUS LED on the faceplate should light. Firmware on the line module runs an internal test to determine whether the module is operating properly. If the module passes the test, the faceplate STATUS status LED remains lit.
Step 7 Install a blank faceplate to cover each empty slot in the Cisco 6100 series DSLAM with NI-2. Secure the faceplate to the chassis by rotating its locking tab to the locked position (see Figure 5-2).
Step 8 Refer to "Port Mapping" for ATUC-1-4DMT modem-slot tip and ring mapping to Cisco 6130 NI-2 DSLAM backplane connectors.
Each of the four modems in an ATUC-1-4DMT module is mapped to pins on one of six 50-pin Champ connector receptacles through Cisco 6130 NI-2 DSLAM backplane wiring. Connector pin to modem mapping is fixed by slot and modem signal routing.
Not all Cisco 6100 series DSLAMs with NI-2 backplanes have identical modem-to-backplane Champ connector wiring layouts and pin mappings.
You do not need to disconnect power before removing an ATUC-1-DMT module from its slot in a Cisco 6100 series DSLAM with NI-2 chassis. Use the following procedure to remove an ATUC-1-DMT module.
| Caution Static voltages as low as 30 volts can cause latent damage to circuitry. Be sure to observe all standard antistatic procedures (for example, wear a grounding strap). |
Step 1 Rotate the module locking tab to its unlocked position (see Figure 5-2).
Step 2 Grasp the ATUC-1-4DMT module extraction lever (see Figure 5-1). Pull up the locking lever to disengage the module contact fingers from the backplane connector.
Step 3 Slide the ATUC-1-4DMT module out of the chassis.
Step 4 Place the ATUC-1-4DMT module on an antistatic surface. For extended storage, insert the module into a static-shielding bag or into a box lined with static-shielding material.
Step 5 Install another module of the same type in the same slot, or install a blank faceplate.
 | Warning Blank faceplates and cover panels serve three important functions: (1) they prevent exposure to hazardous voltages and currents inside the chassis; (2) they constrain electromagnetic interference (EMI) that may otherwise disrupt other equipment; and (3) they direct the flow of cooling air through the chassis. Do not operate the system unless all modules, blank faceplates, front covers, and rear covers are in place. |
The ATUC-1-4DMT (see Figure 5-3) module
The ATUC-1-4DMT line module faceplate (Figure 5-3) includes four LED status indicators, one for each ATU-C modem in the module.
The ATUC-1-4DMT module has a locking lever and a captive locking tab at the upper part of the faceplate. The faceplate locking mechanism consists of
The ATUC-1-4DMT faceplate LED status indicators are described in the next section.
Table 5-1 describes LEDs on the ATUC-1-4DMT line module.
| LED | Color and State | Indication |
|---|---|---|
STATUS | Solid green | No internal fault or problem is detected on this module. |
| Slow blinking green | The module is downloading its running image from the NI-2 module. |
| Fast blinking green | The module is downloading a digital signal processor (DSP). |
| Off | This module did not boot or is operating improperly. (During reboot, this module might be off for 2 to 3 seconds.) |
| Blinking red | An internal fault has occurred or the module cannot boot. |
ACTIVE | Solid green | This module has at least 1 trained modem. |
| Blinking green | A DSP firmware download is in progress. |
ATU-C 1 through ATU-C 4 modems | Solid green | The port is active and trained with its customer premises equipment (CPE). |
Blinking green | The port is training with its CPE. | |
Off | The port is shut down or does not detect a CPE device. |
During the training sequence, the ATUC-1-4DMT module automatically detects the type of CPE to which it is connected. After detecting the CPE type, the module configures itself for one of the following modes of operation:
When configured for G.dmt operation, the ATUC-1-4DMT supports the following:
The NI-2 network interface microprocessor executes boot flash EPROM routines after a reset. Boot flash code also contains the serial management bus (SMB) boot loader.
The microprocessor functions as follows:
1. The NI-2 network interface module sends an ATUC-1-4DMT module its run-time image over the SMB to load the main executable code into SRAM.
2. After the main-code image is running, the ATUC-1-4DMT line module loads the serial data bus (SDB) Utopia field programmable gate array (FPGA) and initializes all modems.
The ATUC-1-4DMT module supports up to 256 virtual channel identifiers (VCIs) and virtual path identifiers (VPIs) per port. The module also enables use of default VPI/VCI mapping or provisioning of VPI/VCI mapping by means of IOS configuration commands.
For Cisco IOS software configuration information and support, refer to the Configuration Guide for Cisco 6000 Family DSLAMs with NI-2 and to the Command Reference for Cisco 6000 Family DSLAMs with NI-2 in the Cisco IOS software configuration documentation set that corresponds with the software release installed on your Cisco DSLAM with NI-2 hardware.
The Cisco second-generation network interface module (NI-2) for Cisco DSLAMs with NI-2 is a system processor module. The NI-2 module is available in three hardware configurations:
An NI-2 module is installed in a Cisco DSLAM with NI-2 and performs central processor, host, and system controller functions. The NI-2 network interface module runs Cisco IOS software. Network interfaces for DS3 type NI-2 modules are on the system I/O card installed on Cisco 6130 NI-2 DSLAM backplanes. In the case of the two OC-3 types, the NI-2 module faceplate provides the required network optical interfaces. The NI-2 module performs the following system tasks:
The DS3 type NI-2 module operates in conjunction with network interfaces supplied by BNC connectors on the system I/O card installed on a Cisco 6100 series DSLAM with NI-2 backplane. A system I/O card
The OC-3 type single-mode and multi-mode NI-2 modules operate in conjunction with network interfaces supplied by optical interface connectors on the OC-3 type NI-2 module faceplate. OC-3 type NI-2 module faceplates have two optical connector pairs:
Both the single-mode and multi-mode OC-3 type NI-2 modules support the aggregation of up to 12 additional subtended OC-3 type Cisco 6100 series DSLAMs with NI-2 in a daisy chain configuration.
System I/O cards are also needed on OC-3 type Cisco 6100 series DSLAM with NI-2 backplanes to provide wire-wrap pins for dedicated CO facility OC-3 type NI-2 module operating alarms.
Table 5-2 lists the Cisco IOS release recommended for configuring and managing Cisco 6100 series DSLAMs with NI-2.
| Hardware Platform | Recommended Minimum Cisco IOS Release |
|---|---|
Cisco 6130 NI-2 DSLAM | Cisco IOS Release 12.0.5(DA1) |
To install NI-2 modules in or remove modules from their Cisco 6100 series DSLAM with NI-2 chassis, follow the procedures in this section. System power can remain on when you insert or remove an NI-2 module.
You must install an NI-2 module in slot 10 or 11 in a Cisco 6100 series DSLAM with NI-2 chassis. To install an NI-2 module, perform the following steps.
| Caution Static voltages as low as 30 volts can cause latent damage to circuitry. Be sure to observe all standard antistatic procedures (for example, wear a grounding strap). |
Step 1 Check that the module top and bottom locking tabs are in their unlocked positions and that the locking levers are free (Figure 5-4). Hold the NI-2 module vertically, with its faceplate toward you and its connector fingers facing slot 10 or 11 (see Figure 5-5).
| Warning Because invisible laser radiation may be emitted from the aperture of the OC-3 type NI-2 optical interface port when no optical cable is connected, avoid exposure to laser radiation and do not stare into an open aperture. |
The fiber-optic communication channels in OC-3 type NI-2 modules use laser energy, which can be harmful, especially to your eyes. During normal operation, this energy is confined to the interface cable and presents no danger. To avoid injury when connecting optical cables, observe these precautions: always check that the OC-3 type NI-2 module is not connected in the Cisco 6100 series DSLAM with NI-2 chassis and that optical cables are already connected before locking the NI-2 module into the chassis. Always restore the protective caps on optical receptacles when they are not in use. Never look into an optical cable or connector.
Step 2 Align the upper and lower edges of the NI-2 module with the top and lower guides in the chassis slot.
Step 3 Slide the NI-2 module into the slot, applying gentle pressure with both hands at the top and bottom of the faceplate until its connector fingers enter the backplane connector.
Step 4 Ensure that the top and bottom locking levers on the NI-2 module engage the top and lower front rails of the chassis (Figure 5-5).
Step 5 Simultaneously press the top locking lever down and the lower locking lever up. This action inserts the NI-2 module contact fingers into the backplane receptacle.
Step 6 Secure the NI-2 module to the chassis by rotating the top and lower locking tabs (see Figure 5-4).
When the NI-2 module is inserted into its backplane receptacle, the faceplate green POWER LED lights. The NI-2 module runs an internal test to determine whether the NI-2 module is operating properly. If the internal test indicates proper operation, the STATUS LED lights.
Step 7 Install blank faceplates to cover all empty slots in the chassis. Secure blank faceplates to the chassis by rotating the faceplate top and bottom locking tabs.
Figure 5-6 shows the faceplates of a DS3 and an OC-3 type NI-2 module. The DS3 faceplate is on the left. Only one OC-3 type faceplate is shown, because single- and multi-mode OC-3 type NI-2 module faceplates are identical.
Step 8 Connect one end of a management cable to the ENET RJ-45 10BaseT connector on the NI-2 module faceplate (see Figure 5-6). Connect the other end to your Ethernet LAN.
Step 9 Connect one end of an EIA/TIA-232 cable to the CNSL RJ-48 local craft interface connector (see Figure 5-6) on the NI-2 module faceplate. Connect the other cable end to a display monitor.
Step 10 Connect a terminal, a modem, or some other appropriate serial device to the AUX RJ-48 auxiliary connector (see Figure 5-6) on the NI-2 module faceplate.
Step 11 To connect an OC-3 configured host Cisco 6130 DSLAM with NI-2 to the network trunk
(a) Connect the network OC-3 transmit (TX) optical cable to the transmit (TX) optical receptacle of the host DSLAM TRNK 1 (top pair, see Figure 5-6) interface connector pair on the host OC-3 type NI-2 module.
(b) Connect the network 0C-3 receive (RX) optical cable to the receive (RX) optical receptacle of the host DSLAM TRNK 1 (top pair, see Figure 5-6) interface connector pair.
Step 12 To connect a Cisco 6130 DSLAM with NI-2 configured for OC-3 operation as a daisy-chained subtended unit, use this procedure:
(a) At the subtending Cisco 6130 DSLAM with NI-2, connect an optical cable to the transmit (TX) receptacle of the SBTD 2 (bottom pair, see Figure 5-6) optical interface connector pair.
(b) Connect the other end of the subtending Cisco 6130 DSLAM with NI-2 transmit (TX) optical cable to the lower (RX) optical receptacle of the TRNK 1 (top pair, see Figure 5-6) optical interface connector on the OC-3 type NI-2 module of the subtended Cisco 6130 DSLAM with NI-2.
(c) At the subtending Cisco 6130 DSLAMs with NI-2, connect an optical cable to the receive (RX) receptacle of the SBTD 2 (bottom pair, see Figure 5-6) optical interface connector pair.
(d) Connect the other end of the subtending Cisco 6130 DSLAM with NI-2 receive (RX) optical cable to the upper (TX) optical receptacle of the TRNK 1 (top pair, Figure 5-6) optical interface connectors on the OC-3 type NI-2 module of the subtended Cisco 6130 DSLAM with NI-2.
You need not disconnect power before removing an NI-2 module from a Cisco 6130 DSLAM with NI-2. To remove an NI-2 module from a chassis, perform the following steps.
| Caution Static voltages as low as 30 volts can cause latent damage to circuitry. Be sure to observe all standard antistatic procedures (for example, wear a grounding strap). |
Step 1 Mark and disconnect all optical cables connected to the NI-2 module you are about to remove. If you are disconnecting an OC-3 NI-2 module, read the following warning first.
| Warning Because invisible laser radiation may be emitted from the aperture of the OC-3 optical interface port when no cable is connected, avoid exposure to laser radiation and do not stare into an open aperture. |
The fiber-optic communication channels in OC-3 NI-2 modules use laser energy, which can be harmful, especially to your eyes. During normal operation this energy is confined to the cable and presents no danger. To avoid injury when connecting or disconnecting optical channel cables, observe these precautions: always disconnect the NI-2 module from the Cisco 6130 DSLAM with NI-2 chassis, as described in Steps 2 and 3 below, before disconnecting optical cables; always restore the protective cap on the optical receptacle when the receptacle is not in use; and never look into an optical cable or connector.
Step 2 Rotate the top and lower NI-2 module lock tabs (see Figure 5-4) counterclockwise.
Step 3 Grasp the NI-2 module top and lower extraction levers. Pull up on the top lever while simultaneously pushing down on the lower lever. This action disengages the module contact fingers from the backplane connectors.
Step 4 Slide the NI-2 module out of the chassis.
Step 5 Mark and disconnect optical cables, and place the NI-2 module on an antistatic surface. If you expect the NI-2 module to be out of the chassis for any length of time, insert the module into a static-shielding bag or into a box lined with static-shielding material.
Step 6 Install another module of the same type in the same slot, or install a blank faceplate.
| Warning Blank faceplates and cover panels serve three important functions: (1) they prevent exposure to hazardous voltages and currents inside the chassis; (2) they constrain electromagnetic interference (EMI) that may otherwise disrupt other equipment; and (3) they direct the flow of cooling air through the chassis. Do not operate the system unless all modules, cards, faceplates, front covers, and rear covers are in place. |
This section describes faceplate indicators and connectors of the DS3 and OC-3 NI-2 module faceplates. Table 5-3 lists the three hardware configurations for which an NI-2 module is available. There is no difference between the OC-3 single- and multi-mode NI-2 module faceplates.
| NI-2 Configuration | WAN Interface | Subtending Interface |
|---|---|---|
NI2-155SM-155-C | OC-3 single-mode | |
NI2-155MM-155-C | OC-3 multi-mode | |
NI2-DS3-DS3-C | DS3 coaxial | DS3 coaxial |
There are two types of NI-2 module faceplates, the DS3 type and the OC-3 type. Each type includes several LED status indicators (see Figure 5-6). For the most part, and except as noted, all NI-2 module faceplates have the same components, status LEDs, and connectors.
Only OC-3 single- and multi-mode NI-2 modules have trunk and subtending optical connectors on their faceplates. Faceplate LED status indicators are described in the next section.
The common features of NI-2 module faceplate components are
Integration of the network trunk interface, subtending, and controller functions on a DS3 type NI-2 module enables a single ATM trunk interface to support up to 12 subtended Cisco 6100 series DSLAMs with NI-2 in a tree topology (see Figure 5-6) or daisy chain. The DS3 type NI-2 faceplate does not have interface connectors, but it has three IOS control ports identical to those described above. The DS3 type NI-2 card includes the following IOS control and interface port arrangements:
Integration of the network trunk interface, subtending, and controller functions on an OC-3 type NI-2 module enables an ATM network trunk interface to support as many as 12 subtended Cisco 6130 DSLAMs with NI-2 in a daisy chain configuration. The OC-3 type NI-2 faceplate includes two optical cable interface connectors and three control interface ports (see Figure 5-6). Other features include
The NI-2 module faceplate system alarm LED group (see Figure 5-6) indicates Cisco 6130 DSLAM with NI-2 system status. Table 5-4 describes system alarm LED functions.
| LED Name | Color | Function |
|---|---|---|
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. |
The NI-2 module faceplate status LED group (see Figure 5-6) indicates NI-2 module operational status. Table 5-5 describes NI-2 module status LED functions.
| LED Name | Color | Function |
|---|---|---|
POWER | Green | When this LED is lit, the NI-2 module is powered on. |
STATUS | Green | Indicates the operational health of the NI-2 module. When the LED is
|
ACTIVE | Green | When lit, this LED indicates which NI-2 module is operating as the active network interface in the chassis (important when a redundant NI-2 is supported). |
A fan tray is required in Cisco 6130 NI-2 DSLAM configurations. The fan alarm LEDs on the NI-2 module faceplates are inactive and always off; in a Cisco 6130 NI-2 DSLAM system, fan status LED indicators are located on the fan tray.
The NI-2 module faceplate ENET status LED group (see IOS ports illustrated in Figure 5-6) indicates Ethernet interface operational status. Two operational status LEDs are located on the ENET connector. Table 5-6 describes NI-2 ENET LED functions.
| LED | Color | Indication |
|---|---|---|
ACT | Green solid or blinking | When the LED is lit or blinking, the 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. |
The DS3 interface status LED groups (TRNK 1, SBTD 2, and SBTD 3 in Figure 5-6) indicate operational status of subtending and subtended DSLAMs. Each Cisco 6130 DSLAM with NI-2 configured for DS3 operation includes the following three interface status LED groups:
Table 5-7 describes the DS3 interface status LEDs.
| LED | Color | When this LED is |
|---|---|---|
TEST | Amber solid | Lit, IOS software detects that an obtrusive test (loopback) is active on this interface |
Off | Unlit, IOS software does not detect obtrusive test activity | |
RX STAT | Amber solid | Lit, the receiver detects a physical layer problem |
Off | Unlit, no physical layer receive problem exists | |
TX STAT | Amber solid | Lit, the transmitter detects a physical layer problem |
Off | Unlit, no physical layer transmit problem has been detected | |
RCLK | Green solid | Lit, hardware detects an incoming clock signal |
Off | Unlit, hardware does not detect an incoming clock signal |
The single- and multi-mode OC-3 interface status LED groups (TRNK 1 and SBTD 2 in Figure 5-6) indicate the operational status of subtending and subtended Cisco 6130 DSLAMs with NI-2. Each DSLAM configured for OC-3 operation has the following two interface status LED groups:
The Cisco 6100 series DSLAM with NI-2 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 are
You can wire visual and audible alarm relay contacts to CO facility remote visual indicating and sound-producing devices. Doing so permits alarms to be installed anywhere within the facility. Other alarms are
The visual and audible alarm relays are located on the system I/O card, but the NI-2 module hardware operates them. They are controlled by software, but critical alarm relays remain on by default until the IOS software boots or reboots. All other relays are off by default.
Noncritical alarms turn off if you press the ACO button. Refer to the Cisco 6130 DSLAM with NI-2 I/O Card Installation and Configuration document for alarm relay contact wiring.
The NI-2 module receives its network timing signal from any one of the following sources:
The NI-2 module controls distribution of two clock reference signals. One clock reference signal is supplied to the line interface modules; the other clock reference signal is supplied to a subtended DSLAM NI-2 module. Therefore, the trunk port on each subtending Cisco 6130 DSLAM with NI-2 obtains its clock reference signal for a network of subtended Cisco 6130 DSLAMs with NI-2.
You can subtend up to 12 Cisco 6130 NI-2 DSLAMs chassis to a single Cisco 6130 NI-2 DSLAM host configured for a DS3 or an OC-3 ATM network backbone interface. Cisco 6130 NI-2 DSLAMs support the following subtending features:
Figure 5-7 shows 13 DS3-configured Cisco 6130 NI-2 DSLAMs subtended in a combined tree topology and daisy chains; the two middle Cisco 6130 NI-2 DSLAMs in the last level down are connected in two daisy chains. Figure 5-8 shows three Cisco OC-3 configured Cisco 6130 NI-2 DSLAMs subtended in a single daisy chain.
In Figure 5-7, TRNK 1 refers to the single network trunk or to the two Cisco 6130 NI-2 DSLAM subtended network interfaces. SUBTD 2 and SUBTD 3 refer to each of the two Cisco 6130 NI-2 DSLAM subtended network interfaces. The subtend network interface connections are made at BNC receptacle pairs on the system I/O interface card installed on the backplane. No more than 12 Cisco 6130 NI-2 DSLAMs can be subtended in a DS3 daisy chain or tree topology (see the Cisco 6130 DSLAM with NI-2 I/O Card Installation and Configuration document).
DS3 Tree Topology and Daisy Chain
Daisy chain subtending is optimal for OC-3 based network configurations. Each OC-3 type NI-2 module has two optical connector pairs:
Figure 5-8 shows a typical daisy chain. No more than 12 OC-3 configured Cisco 6130 NI-2 DSLAMs can be subtended in an OC-3 daisy chain.
Subtended Cisco 6130 NI-2 DSLAMs in an OC-3 Daisy Chain
The initial release of Cisco 6130 NI-2 DSLAMs emphasizes bandwidth aggregation. Therefore, Cisco IOS software is not implemented to manage the primary and subtended Cisco 6130 NI-2 DSLAMs as a single large Cisco 6130 NI-2 system. Instead, each Cisco 6130 NI-2 DSLAM supports an independent IOS processor and management information base (MIB).
The Cisco system input/output (I/O) card is installed on a Cisco 6130 NI-2 DSLAM backplane.
The Cisco 6130 NI-2 DSLAM
This system I/O card
This section provides software requirements and a list of parts and tools that you need to install the system I/O card.
Table 5-8 lists the Cisco IOS release recommended for use when you configure and manage the system I/O card for the Cisco 6130 NI-2 DSLAM.
| Hardware Platform | Recommended Minimum Cisco IOS Release |
|---|---|
Cisco 6130 NI-2 DSLAM | 12.0.5(DA1) |
The system I/O card is shipped with the Cisco 6130 NI-2 DSLAM in a kit. The kit includes the components listed in Table 5-9. See the "Installing and Removing the System I/O Card" section for system I/O card installation and removal instructions.
System I/O card 1 See Figure 5-9 73-4377-02 800-07027-01 EMI fence1 1 See Figure 5-12 51-1412-01 EMI cover 1 See Figure 5-12 51-1413-01 Screws 12 --- 48-0688-01 Standoffs 12 --- 50-0767-01 Safety shield 1 See Figure 5-9 700-05598-01 ESD shield 1 See Figure 5-9 700-05732-01 EMI cover bracket 1 See Figure 5-12 700-05842-01
Table 5-9: Cisco 6130 NI-2 DSLAM System I/O Card Installation Kit Components
Component
Figure Reference
Cisco Part Number
Name
Quantity
Subassembly
Kit
1The EMI fence is attached (soldered) to the system I/O card.
To install a system I/O card, have the following parts and tools available. If you need additional equipment, ask your service representative for ordering information.
The Cisco 6130 NI-2 DSLAM chassis is not shipped with the system I/O card (see Figure 5-9) installed. The system I/O card is a field-replaceable unit that is packaged in an installation kit.
Before you can operate the Cisco 6130 NI-2 DSLAM, you must do the system I/O card initial installation.
Figure 5-10 shows the Cisco 6130 NI-2 DSLAM backplane without the system I/O card. Figure 5-11 shows the I/O card installation and (Figure 5-12) shows the EMI shield formed by the EMI fence.
After you perform the initial installation, you can perform normal removal and reinstallation of the system I/O card. During an initial installation, you must mount the system I/O card on the Cisco 6130 NI-2 DSLAM chassis backplane, using the components in the installation kit, which is shipped with the chassis.
An EMI shield is formed by the EMI fence (see Figure 5-11). The EMI fence is soldered in place on the system I/O card. The EMI cover is held in place on the EMI fence with a kit screw installed through the EMI cover and into the EMI cover bracket (see Figure 5-12). The EMI cover bracket is held in place by two kit screws installed in the two underlying standoffs between connectors P9 and P3 (see Figure 5-10). Printed circuit board fuses, relays, and surge protectors are shielded by clear plastic covers held in place by kit screws installed in the standoffs installed on the chassis. The EMI cover and protective shields must be in place during Cisco 6130 NI-2 DSLAM operation.
To initially install the system I/O card
Step 1 Install the system I/O card and its protective plastic covers.
Step 2 Fasten the EMI cover bracket, EMI cover, and ESD shield.
The following sections describe how to perform these steps.
This section tells you how to install the system I/O card on the chassis backplane (see Figure 5-11).
| Caution Disconnect chassis power before doing the initial installation of a system I/O card. |
| Caution Static voltages as low as 30 volts can cause latent damage to circuitry on the system I/O card. Be sure to observe all standard antistatic procedures (for example, wear a grounding strap). |
Be sure to follow steps 1 through 11 in the order listed to properly install the system I/O card on the Cisco 6130 backplane.
Step 1 Check that a standoff is located at each of the chassis backplane standoff positions (see hexagonal standoffs in Figure 5-10 and Figure 5-11). Install any missing standoffs using those contained in the installation kit as replacements. Also check that all standoffs are tight.
| Caution Do not overtighten a standoff. Overtightening can cause the system I/O card printed circuit board to crack. |
Step 2 Remove the screw from the right side of the backplane ESD shield and standoff between receptacles J41 and J47 (see Figure 5-10). No standoffs, except the three holding the backplane ESD shield in place (see Figure 5-12), should now have screws in them.
Step 3 Holding the system I/O card vertically with its component side toward you (see Figure 5-11), align its top right mounting hole with the top right standoff (above J48) on the chassis backplane. Ensure that this aligns connectors J3 and J9, on the system I/O card, with receptacles P3 and P9 on the chassis backplane.
Step 4 Carefully press connectors J3 and J9 into backplane receptacles P3 and P9 until the system I/O card is in place and against all its standoffs.
Step 5 Loosely mount the system I/O card on the three chassis backplane standoffs at the right side of the system I/O card using three kit screws (see Figure 5-11).
Step 6 Holding the safety shield in place at the left side of the system I/O card, loosely fasten the safety shield and system I/O card, using three kit mounting screws. Fasten the screws in the three standoffs at the left side of the system I/O card (see Figure 5-9, Figure 5-10, and Figure 5-11).
Step 7 Loosely refasten the screw removed from the standoff in Step 2 above. The system I/O card should now be situated over the chassis backplane ESD cover (see Figure 5-10).
Step 8 Loosely fasten a kit mounting screw in the standoff at the upper left corner inside the EMI fence (see Figure 5-11 and Figure 5-12).
Step 9 Fasten a standoff from the installation kit in the standoff between relays K4 and K5 on the system I/O card (see Figure 5-9 and Figure 5-12). Observing the overtighten caution, tighten the installed standoff.
Step 10 Remove the system I/O card ESD shield from the installation kit. Place the ESD shield on the standoff you installed in Step 9, so that the hole in its top aligns with the hole in the standoff. The top edge of the ESD shield should lie parallel to and against the EMI fence (see Figure 5-12).
Step 11 Fasten a kit screw through the hole in the ESD shield and in the standoff you installed in Step 9 above. Observing the overtighten caution, tighten the screw, and check all other screws for tightness.
The EMI cover (see Figure 5-9 and Figure 5-12) is installed on the chassis backplane after the I/O card is positioned on the chassis backplane. Use the following procedure to install the EMI cover on the chassis backplane:
Step 1 Remove the EMI cover bracket (Figure 5-12) from the installation kit. Place the EMI cover bracket over the system I/O card holes between receptacles P3 and P9.
Step 2 Remove two kit screws and fasten them through the holes in the EMI cover bracket and into the standoffs under the system I/O card. Observing the overtighten caution, tighten the screws.
Step 3 Remove the EMI cover from the installation kit and mount it on the EMI fence.
| Caution Be careful not to bend the tabs on the EMI cover when you fasten the cover on the EMI fence. |
Step 4 After making sure that no EMI cover tabs are outside the EMI fence, fasten a screw through the EMI cover and into the EMI cover bracket. Observing the overtighten caution, tighten the screw.
Step 5 If required, replace or install the CO alarm wiring at the system I/O card alarm wire-wrap headers. See the "Alarm Wire-Wrap Headers" section for a description of system I/O card alarm wiring.
Step 6 If required, replace or install CO system network trunk and subtending interfaces. See the "DS3 Trunk and Subtending Interfaces" section for a description of system network trunk and subtending interface connections.
You do not need to disconnect power before removing the system I/O card.
| Caution Static voltages as low as 30 volts can cause latent damage to circuitry on the system I/O card. Be sure to observe all standard antistatic procedures (for example, wear a grounding strap). |
To remove the system I/O card, perform the following steps:
Step 1 If they are present, mark and disconnect all BNC coaxial cables at system I/O card receptacles J4, J6, J8, J10, J12, and J14 (see Figure 5-9).
Step 2 If they are present, mark and disconnect all wires at the system I/O card wire-wrap header pins.
Step 3 Remove the screw at the center of the EMI cover (see Figure 5-12).
Step 4 Remove the EMI cover.
Step 5 Remove the two EMI cover bracket screws (see Figure 5-12) and the EMI cover bracket.
Step 6 Remove the screw at the center of the system I/O card ESD shield (see Figure 5-12) and also remove the shield.
Step 7 Remove the standoff from which the ESD shield screw was removed.
Step 8 Remove the screw at the top left hand corner of the EMI fence enclosure (see Figure 5-12).
Step 9 Remove the three screws holding the system I/O card safety shield (see Figure 5-10 and Figure 5-11) in place, and also remove the safety shield.
Step 10 Remove the three screws from the right side of the system I/O card.
Step 11 Remove the screw at the bottom center of the system I/O card, and carefully pull the system I/O card away from connectors P3 and P9.
Step 12 Place the system I/O card in an antistatic bag or in a box lined with antistatic material.
Step 13 Store removed screws, covers, and shields in a safe place for reinstallation.
You do not need to disconnect power before you reinstall the system I/O card.
| Caution Static voltages as low as 30 volts can cause latent damage to circuitry on the system I/O card. Be sure to observe all standard antistatic procedures (for example, wear a grounding strap). |
To reinstall the system I/O card, perform the following steps:
Step 1 Locate the previously removed system I/O card screws, covers, and shields.
Step 2 Check that a standoff (see Figure 5-10) is installed at each of the chassis backplane standoff positions. Replace any missing standoffs and check that all standoffs are tight.
| Caution Do not overtighten the standoff. Overtightening can cause the system I/O card printed circuit board to crack. |
Step 3 Holding the system I/O card with its component side toward you (see Figure 5-11), align the top right mounting hole with the top right standoff on the chassis backplane. Ensure that this aligns connectors J3 and J9 on the system I/O card with receptacles P3 and P9 on the chassis backplane.
Step 4 Carefully press connectors J3 and J9 into backplane receptacles P3 and P9 until the system I/O card is in place and against all the standoffs.
Step 5 Loosely fasten the system I/O card on the three chassis backplane standoffs at the right side of the system I/O card with the three Phillips-head mounting screws previously removed (see Figure 5-11).
Step 6 Holding the safety shield in place at the left side of the system I/O card, loosely fasten the safety shield and system I/O card. Fasten the three previously removed mounting screws in the three standoffs at the left side of the system I/O card (see Figure 5-9, Figure 5-10, and Figure 5-11).
Step 7 Loosely refasten a previously removed screw located in the lower center of the system I/O card in the standoff under the chassis backplane plastic cover (see Figure 5-10).
Step 8 Loosely fasten a screw in the standoff at the upper left corner inside the EMI fence (see Figure 5-11 and Figure 5-12).
Step 9 Fasten a standoff between relays K4 and K5 on the system I/O card (see Figure 5-9). Observing the overtighten caution, tighten the standoff.
Step 10 Place the ESD shield on the standoff, fastened in Step 9, so that the hole in its top aligns with the hole in the standoff. The top edge of the ESD shield should lie parallel to and rest against the EMI fence (see Figure 5-12).
Step 11 Fasten a mounting screw through the hole in the ESD shield and into the standoff you fastened in Step 9. Observing the overtighten caution, tighten the screw.
Step 12 Perform the instructions in the "Installing the EMI Cover" section.
Step 13 If they exist, reinstall the wires removed from the alarm wire-wrap headers in Step 2 of the "Removal of the System I/O Card" section.
Step 14 If they exist, reinstall the BNC connections (see Figure 5-13) removed in Step 1 of the "Removal of the System I/O Card" section.
This section describes
The system I/O card, which is installed on the Cisco 6130 NI-2 DSLAM backplane, mates with backplane receptacles P3 and P9. This card is used to provide
The system I/O card (see Figure 5-9) has six 75-ohm BNC connectors that provide network trunk and network subtending interfaces for DS3 configured Cisco 6130 NI-2 DSLAMs. The six BNC connectors have the functions listed here:
You can subtend as many as 12 Cisco 6130 NI-2 DSLAMs in a daisy chain or tree configuration. A typical combined tree and daisy chain configuration is shown in Figure 5-7.
In Figure 5-7, the bottom level two center DSLAMs are daisy chained with their subtending DSLAMs above them. All others DSLAMs are subtended in a tree topology.
Wire-wrap headers P1 through P5, located at the bottom left of the installed system I/O card (see Figure 5-10), have six pins each. The header wire-wrap pins provide CO connections for the following Cisco 6130 NI-2 DSLAM alarms:
Normally open, closed, and common alarm relay contacts exist for each alarm listed above. The relay contact wiring is fed to the active NI-2 card in a Cisco 6130 NI-2 DSLAM through the system I/O card alarm relay connector headers. Audible alarms can be manually shut off, but visual alarms remain active. To shut off
Figure 5-9 shows the location of the 6-pin wire-wrap headers P1 through P5 in the lower right corner of the system I/O card. The left-most pin on each header is No. 1 and the right-most pin is No. 6.
Table 5-10 maps wire-wrap header pins on the system I/O card to the alarms supported by the DS3 and OC-3 (single-mode) and OC-3 (multi-mode) type NI-2 cards.
| Header | Pin 1 (left) | Pin 2 | Pin 3 | Pin 4 | Pin 5 | Pin 6 (right) |
|---|---|---|---|---|---|---|
P1 | AUD_CRIT_NO4 | AUD_CRIT_NC5 | AUD_MAJ6_CO | AUD_MAJ_NO | AUD_MAJ_NC | |
P2 | AUD_MIN7_CO | AUD_MIN_NO | AUD_MIN_NC | VIS_CRIT_CO | VIS8_CRIT_NO | VIS_CRIT_NC |
P3 | VIS_MAJ_CO | VIS_MAJ_NO | VIS_MAJ_NC | VIS_MIN_CO | VIS_MIN_NO | VIS_MIN_NC |
P4 | DOOR ALARM | Reserved | Reserved | Reserved | ACO9_NO | ACO GND10 |
P5 | RX_BITS11_TIPA | RX_BITS_RINGA | RX_BITS_GND/GND | RX_BITS_TIPB | RX_BITS_RINGB | RX_BITS_GND/GND |
Posted: Mon Mar 6 07:01:58 PST 2000
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