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Table Of Contents
1.2.1 Reversible Mounting Bracket
1.4.4 Alarm Interface Panel Replacement
1.7 Power and Ground Description
1.8 Alarm, Timing, LAN, and Craft Pin Connections
1.8.1 Alarm Contact Installation
1.8.4 TL1 Craft Interface Installation
1.11 Software and Hardware Compatibility
Shelf and Backplane Hardware
This chapter provides a description of Cisco ONS 15454 shelf and backplane hardware. Card and cable descriptions are provided in Chapter 2, "Common Control Cards," Chapter 3, "Electrical Cards and Cable," Chapter 4, "Optical Cards," and Chapter 5, "Ethernet Cards."
For instructions on installing equipment, refer to the Cisco ONS 15454 Procedure Guide.
Chapter topics include:
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Power and Ground Description
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Note
Warning
Warning
Warning
Warning
Caution
Note
1.1 Installation Overview
When installed in an equipment rack, the ONS 15454 assembly is typically connected to a fuse and alarm panel to provide centralized alarm connection points and distributed power for the ONS 15454. Fuse and alarm panels are third-party equipment and are not described in this documentation. If you are unsure about the requirements or specifications for a fuse and alarm panel, consult the user documentation for the related equipment. The front door of the ONS 15454 allows access to the shelf assembly, fan-tray assembly, and cable-management area. The backplanes provide access to alarm contacts, external interface contacts, power terminals, and BNC/SMB connectors.
Warning
Warning
You can mount the ONS 15454 in a 19- or 23-inch rack. The shelf assembly weighs approximately 55 pounds with no cards installed. The shelf assembly includes a front door for added security, a fan tray module for cooling, and extensive cable-management space.
ONS 15454 optical cards have SC connectors on the card faceplate. Fiber optic cables are routed into the front of the destination cards. Electrical cards (DS-1, DS-3, DS3XM-6, and EC-1) require electrical interface assemblies (EIAs) to provide the cable connection points for the shelf assembly. In most cases, EIAs are ordered with the ONS 15454 and come pre-installed on the backplane. See the "Backplane Covers" section for more information about the EIAs.
The ONS 15454 is powered using -48V DC power. Negative, return, and ground power terminals are accessible on the backplane.
Note
Install the ONS 15454 in compliance with your local and national electrical codes:
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Warning
1.2 Rack Installation
Warning
The ONS 15454 is mounted in a 19- or 23-inch equipment rack. The shelf assembly projects five inches from the front of the rack. It mounts in both EIA-standard and Telcordia-standard racks. The shelf assembly is a total of 17 inches wide with no mounting ears attached. Ring runs are not provided by Cisco and may hinder side-by-side installation of shelves where space is limited.
The ONS 15454 measures 18.5 inches high, 19 or 23 inches wide (depending on which way the mounting ears are attached), and 12 inches deep (47 by 48.3 by 30.5 cm). You can install up to four ONS 15454s in a seven-foot equipment rack. The ONS 15454 must have 1 inch of airspace below the installed shelf assembly to allow air flow to the fan intake. If a second ONS 15454 is installed underneath the shelf assembly, the air ramp on top of the lower shelf assembly provides the air spacing needed and should not be modified in any way. Figure 1-1 shows the dimensions of the ONS 15454.
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Warning
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Figure 1-1 Cisco ONS 15454 dimensions
1.2.1 Reversible Mounting Bracket
Caution
Caution
The shelf assembly comes preset for installation in a 23-inch rack, but you can reverse the mounting bracket to fit the smaller, 19-inch rack.
1.2.2 Mounting a Single Node
Mounting the ONS 15454 in a rack requires a minimum of 18.5 inches of vertical rack space and one additional inch for air flow. To ensure the mounting is secure, use two to four #12-24 mounting screws for each side of the shelf assembly. Figure 1-2 shows the rack mounting position for the ONS 15454.
Figure 1-2 Mounting an ONS 15454 in a rack
Two people should install the shelf assembly; however, one person can install it using the temporary set screws included. The shelf assembly should be empty for easier lifting. The front door can also be removed to lighten the shelf assembly.
Note
1.2.3 Mounting Multiple Nodes
Most standard seven-foot racks can hold four ONS 15454s and a fuse and alarm panel. However, unequal flange racks are limited to three ONS 15454s and a fuse and alarm panel or four ONS 15454s and a fuse and alarm panel from an adjacent rack.
If you are using the external (bottom) brackets to install the fan-tray air filter, you can install three shelf assemblies in a standard seven-foot rack. If you are not using the external (bottom) brackets, you can install four shelf assemblies in a rack. The advantage to using the bottom brackets is that you can replace the filter without removing the fan tray.
1.2.3.1 ONS 15454 Bay Assembly
The Cisco ONS 15454 Bay Assembly simplifies ordering and installing the ONS 15454 because it allows you to order shelf assemblies pre-installed in a seven-foot rack. The Bay Assembly is available in a three- or four-shelf configuration. The three-shelf configuration includes three ONS 15454 shelf assemblies, a pre-wired fuse and alarm panel, and two cable-management trays. Optional fiber channels can be ordered. The four-shelf configuration includes four ONS 15454 shelf assemblies and a pre-wired fuse and alarm panel. Optional fiber channels can be ordered. A four shelf ONS 15454 Bay Assembly is shown in Figure 1-3.
Figure 1-3 A four-shelf ONS 15454 Bay Assembly
1.3 Front Door
The Critical, Major, and Minor alarm LEDs visible through the front door indicate whether a Critical, Major, or Minor alarm is present anywhere on the ONS 15454. These LEDs must be visible so technicians can quickly determine if any alarms are present. You can use the LCD to further isolate alarms.
The ONS 15454 features a locked door to the front compartment. A pinned hex key that unlocks the front door ships with the ONS 15454. A button on the right side of the shelf assembly releases the door. The front door ( Figure 1-4) provides access to the shelf assembly, cable-management tray, fan-tray assembly, and LCD screen.
Figure 1-4 The ONS 15454 front door
You can remove the front door of the ONS 15454 to provide unrestricted access to the front of the shelf assembly. An erasable label ( Figure 1-5) is pasted on the inside of the front door. You can use the label to record slot assignments, port assignments, card types, node ID, rack ID, and serial number for the ONS 15454.
Figure 1-5 The front-door erasable label
Note
Figure 1-6 The laser warning on the front-door label
Figure 1-7 Removing the ONS 15454 front door
1.4 Backplane Covers
If a backplane does not have an EIA panel installed, it should have two sheet metal backplane covers (one on each side of the backplane). Each cover is held in place with nine 6-32 x 3/8 inch Phillips screws.
Figure 1-8 Backplane covers
1.4.1 Lower Backplane Cover
The lower section of the ONS 15454 backplane is covered by a clear plastic protector, which is held in place by five 6-32 x 1/2 inch screws. Remove the lower backplane cover to access the alarm interface panel (AIP), alarm pin field, frame ground, and power terminals.
Figure 1-9 Removing the lower backplane cover
1.4.2 Rear Cover
The ONS 15454 has an optional clear plastic rear cover. This clear plastic cover provides additional protection for the cables and connectors on the backplane ( Figure 1-10). The rear cover screw locations are shown in Figure 1-11. You can also install the optional spacers if more space is needed between the cables and rear cover ( Figure 1-12).
Figure 1-10 Clear rear cover
Figure 1-11 Backplane attachment for cover
Figure 1-12 Installing the plastic rear cover with spacers
1.4.3 Alarm Interface Panel
The AIP is located above the alarm pin field on the lower section of the backplane. The AIP provides surge protection for the ONS 15454. It also provides an interface from the backplane to the fan-tray assembly and LCD. The AIP plugs into the backplane using a 96-pin DIN connector and is held in place with two retaining screws. The panel has a non-volatile memory chip that stores the unique node address (MAC address).
Note
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1.4.4 Alarm Interface Panel Replacement
If the alarm interface panel (AIP) fails, a MAC Fail alarm displays on the CTC Alarms menu and/or the LCD display on the fan tray will go blank. To perform an in-service replacement of the AIP, you must contact Cisco Technical Assistance Center (TAC) at 877-323-7368.
You can replace the AIP on an in-service system without affecting traffic. The circuit repair feature allows you to repair circuits affected by MAC address changes on a single node at a time. Circuit repair will work when all nodes are running the same software version. Each individual AIP upgrade requires an individual circuit repair; if AIPs are replaced on two nodes, the circuit repair must be performed twice.
Caution
Note
Note
1.5 Fan-Tray Assembly
The fan-tray assembly is located at the bottom of the ONS 15454 front compartment. The fan tray is a removable drawer that holds fans and fan-control circuitry for the ONS 15454. The front door can be left in place or removed before installing the fan-tray assembly. After you install the fan tray, you should only need to access it if a fan failure occurs or you need to replace or clean the fan-tray air filter.
The front of the fan-tray assembly has an LCD screen that provides slot and port-level information for all ONS 15454 card slots, including the number of Critical, Major, and Minor alarms.
The fan-tray assembly features an air filter at the bottom of the tray that you can install and remove by hand. Remove and visually inspect this filter every 30 days and keep spare filters in stock. Refer to the Cisco ONS 15454 Troubleshooting Guide for information about cleaning and maintaining the fan-tray air filter.
Note
Caution
Caution
Note
1.5.1 Fan Speed
If one or more fans fail on the fan-tray assembly, replace the entire assembly. You cannot replace individual fans. The red Fan Fail LED on the front of the fan tray illuminates when one or more fans fail. For fan tray replacement instructions, refer to the Cisco ONS 15454 Troubleshooting Guide. The red Fan Fail LED clears after you install a working fan tray.
Fan speed is controlled by TCC+ card temperature sensors. The sensors measure the input air temperature at the fan-tray assembly. Fan speed options are low, medium, and high. If the TCC+ card fails, the fans automatically shift to high speed. The temperature measured by the TCC+ sensors is displayed on the LCD screen.
Note
Figure 1-13 Fan Tray Assembly Power Requirements
1.6 Air Filter
The ONS 15454 contains an air filter; NEBS 3E and later versions of the ONS 15454 use a reusable air filter that is installed either beneath the fan-tray assembly or in the optional external filter brackets. Earlier versions of the ONS 15454 use a disposable air filter that is installed beneath the fan-tray assembly only.
Warning
1.6.1 Reusable Air Filter
The reusable filter is made of a gray, open-cell, polyurethane foam that is specially coated to provide fire and fungi resistance. NEBS 3E and later versions of the ONS 15454 use a reusable air filter. Spare filters should be kept in stock.
1.6.2 Disposable Air Filter
The disposable filter is made of spun white polyester that is flame retardant. NEBS 3E and earlier versions of the ONS 15454 use a disposable air filter. This disposable filter is not designed to be cleaned. You can order air filter replacements from Cisco (Cisco P/N: 47-01-00001) or from Universal Air Filter Company, model PE-5:
Universal Air Filter Company (www.uaf.com)
1624 Sauget Industrial Parkway,
Sauget, IL 622061.7 Power and Ground Description
Ground the equipment according to Telcordia standards or local practices.
Cisco recommends the following wiring conventions, but customer conventions prevail:
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The ONS 15454 has redundant -48V DC #8 power terminals on the shelf assembly backplane. The terminals are labeled BAT1, RET1, BAT2, and RET2 and are located on the lower section of the backplane behind a clear plastic cover.
To install redundant power feeds, use four power cables and one ground cable. For a single power feed, only two power cables (#10 AWG, copper conductor, 194°F [90°C]) and one ground cable (#6 AWG) are required. Use a conductor with low impedance to ensure circuit overcurrent protection. However, the conductor must have the capability to safely conduct any faulty current that might be imposed.
Note
The existing ground post is a #10-32 bolt. The nut provided for a field connection is also a #10, with an integral lock washer. The lug must be a dual-hole type and rated to accept the #6 AWG cable. Two posts are provided on the Cisco ONS 15454 to accommodate the dual-hole lug. Figure 1-14 shows the location of the ground posts.
Figure 1-14 Ground posts on the ONS 15454 backplane
For information about attaching ferrites to power cabling, refer to the "Ferrites" section.
1.8 Alarm, Timing, LAN, and Craft Pin Connections
Caution
The ONS 15454 has a backplane pin field located at the bottom of the backplane. The backplane pin field provides 0.045 square inch wire-wrap pins for enabling external alarms, timing input and output, and craft interface terminals. This section describes the backplane pin field and the pin assignments for the field. Figure 1-15 shows the wire-wrap pins on the backplane pin field. Beneath each wire-wrap pin is a frame ground pin. Frame ground pins are labeled FG1, FG2, FG3, etc. Install the ground shield of the cables connected to the backplane to the ground pin that corresponds to the pin field used. Figure 1-15 shows pinouts for the ONS 15454.
Figure 1-15 ONS 15454 backplane pinouts
Note
1.8.1 Alarm Contact Installation
The alarm pin field supports up to 17 alarm contacts, including four audible alarms, four visual alarms, one alarm cutoff (ACO), and four user-definable alarm input and output contacts.
Audible alarm contacts are in the LOCAL ALARM AUD pin field and visual contacts are in the LOCAL ALARM VIS pin field. Both of these alarms are in the LOCAL ALARMS category. User-definable contacts are in the ENVIR ALARM IN (external alarm) and ENVIR ALARM OUT (external control) pin fields. These alarms are in the ENVIR ALARMS category; you must have the AIC card installed to use the ENVIR ALARMS. Alarm contacts are Normally Open (N/O), meaning that the system closes the alarm contacts when the corresponding alarm conditions are present. Each alarm contact consists of two wire-wrap pins on the shelf assembly backplane. Visual and audible alarm contacts are classified as Critical, Major, Minor, and Remote. Figure 1-15 shows alarm pin assignments.
Visual and audible alarms are typically wired to trigger an alarm light at a central alarm collection point when the corresponding contacts are closed. You can use the Alarm Cutoff pins to activate a remote ACO for audible alarms. You can also activate the ACO function by pressing the ACO button on the TCC+ card faceplate. The ACO function clears all audible alarm indications. After clearing the audible alarm indication, the alarm is still present and viewable in the Alarms tab in CTC.
1.8.2 Timing Installation
The ONS 15454 backplane supports two Building Integrated Timing Supply (BITS) clock pin fields. The first four BITS pins, rows 3 and 4, support output and input from the first external timing device. The last four BITS pins, rows 1 and 2, perform the identical functions for the second external timing device. Table 1-1 lists the pin assignments for the BITS timing pin fields.
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1.8.3 LAN Installation
Use the LAN pins on the ONS 15454 backplane to connect the ONS 15454 to a workstation or Ethernet LAN, or to a LAN modem for remote access to the node. You can also use the LAN port on the TCC+ faceplate to connect a workstation or to connect the ONS 15454 to the network. Table 1-2 shows the LAN pin assignments.
Before you can connect an ONS 15454 to other ONS 15454s or to a LAN, you must change the default IP address that is shipped with each ONS 15454 (192.1.0.2).
*The Cisco ONS 15454 is DCE.
1.8.4 TL1 Craft Interface Installation
You can use the craft pins on the ONS 15454 backplane or the RS-232 port on the TCC+ faceplate to create a VT100 emulation window to serve as a TL1 craft interface to the ONS 15454. Use a straight-through cable to connect to the RS-232 port. Table 1-3 shows the pin assignments for the CRAFT pin field.
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Table 1-3 Craft Interface Pin Assignments
Craft
A1
Receive
A2
Transmit
A3
Ground
A4
DTR
1.9 Cards and Slots
ONS 15454 cards have electrical plugs at the back that plug into electrical connectors on the shelf assembly backplane. When the ejectors are fully closed, the card plugs into the assembly backplane. Figure 1-16 shows card installation.
Figure 1-16 Installing cards in the ONS 15454
1.9.1 Card Slot Requirements
The ONS 15454 shelf assembly has 17 card slots numbered sequentially from left to right. Slots 1 - 4 and 14 - 17 are multispeed slots. They can host any ONS 15454 card, except the OC48IR 1310, OC48LR 1550, OC48ELR 1550, and OC192LR 1550 cards. Slots 5, 6, 12 and 13 are high-speed slots. They can host all ONS 15454 cards, except the OC12/STM4-4 card. You can install the OC48 IR/STM16 SH AS 1310 and the OC48 LR/STM16 LH AS 1550 cards in any multispeed or high-speed card slot.
Slots 7 and 11 are dedicated to TCC+ cards. Slots 8 and 10 are dedicated to cross-connect (XC, XCVT, XC10G) cards. Slot 9 is reserved for the optional Alarm Interface Controller (AIC) card. Slots 3 and 15 can also host DS1N-14 and DS3N-12 cards that are used in 1:N protection.
Caution
Shelf assembly slots have symbols indicating the type of cards that you can install in them. Each ONS 15454 card has a corresponding symbol. The symbol on the card must match the symbol on the slot.
Table 1-4 shows the slot and card symbol definitions.
Table 1-5 lists the number of ports, line rates, connector options, and connector locations for ONS 15454 optical and electrical cards.
* When used as a protect card, the card does not have a physical external connection. The protect card connects to the working card(s) through the backplane and becomes active when the working card fails. The protect card then uses the physical connection of the failed card.
1.9.2 Card Replacement
To replace an ONS 15454 card with another card of the same type, you do not need to make any changes to the database; remove the old card and replace it with a new card. To replace a card with a card of a different type, physically remove the card and replace it with the new card, then delete the original card from CTC.
Caution
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Warning
1.10 Ferrites
Place third-party ferrites on certain cables to dampen electromagnetic interference (EMI) from the ONS 15454. Ferrites must be added to meet the requirements of GR 1089. Refer to the ferrite manufacturer documentation for proper use and installation of the ferrites. Ferrite placements on the ONS 15454 can include power cables, AMP Champ connectors, baluns, BNC/SMB connectors, and the wire-wrap pin field.
1.11 Software and Hardware Compatibility
Table 1-6 provides a matrix showing software and hardware compatibility for ONS 15454 Releases 2.0, 2.1, 2.2.0, 3.0, 3.1, 3.2, and 3.3.
If an upgrade is required for compatibility, call the Cisco Technical Assistance Center at 1-877-323-7368.
Posted: Mon Feb 25 16:06:43 PST 2008
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