Cisco ONS 15600 User manual

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Shelf and Backplane Hardware
This chapter provides a description of Cisco ONS 15600 shelf and backplane hardware. Card and cable
descriptions are provided in Chapter 2, “Card Reference.”
To install equipment, refer to the Cisco ONS 15600 Procedure Guide.
Chapter topics include:
•1.1 Installation Overview, page 1-1
•1.2 Bay Installation, page 1-2
•1.3 Front Door, page 1-4
•1.4 Rear Covers, page 1-5
•1.5 Cable Routing, page 1-7
•1.6 Customer Access Panel, page 1-7
•1.7 Alarm, Timing, LAN, and Craft Pin Connections, page 1-10
•1.8 Power Distribution Unit, page 1-13
•1.9 Power and Ground Description, page 1-13
•1.10 Fan-Tray Assembly, page 1-14
•1.11 Cards and Slots, page 1-17
Note The Cisco ONS 15600 assembly is intended for use with telecommunications equipment only.
Note The ONS 15600 is designed to comply with Telcordia GR-1089-CORE Type 2 and Type 4 equipment.
Install and operate the ONS 15600 only in environments that do not expose wiring or cabling to the
outside plant. Acceptable applications include Central Office Environments (COEs), Electronic
Equipment Enclosures (EEEs), Controlled Environment Vaults (CEVs), huts, and Customer Premise
Environments (CPEs).
1.1 Installation Overview
The ONS 15600 is a Network Equipment Building System III (NEBS III)-compliant, environmentally
hardened shelf assembly that ships as a single shelf in a bay assembly for Release 8.0. The ONS 15600
comes with the power distribution unit (PDU), shelf, fans, and backplane already installed. The front

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Chapter 1 Shelf and Backplane Hardware
1.2 Bay Installation
door of the ONS 15600 allows access to the shelf assembly, fan-tray assembly, and cable-management
area. The customer access panel (CAP) or customer access panel version 2 (CAP2) on the back of the
shelf provide access to alarm contacts, external interface contacts, and timing contacts. Power and
ground terminals are located on the top left and right sides of the bay.
Caution Voltage to the alarm circuits should not exceed –48 VDC.
The ONS 15600 comes mounted in a custom, certified NEBS-2000 rack. The bay assembly, including
the rack, fan trays, and PDU weighs approximately 500 pounds (226.8 kg) with no cards installed.
ONS 15600 OC-N cards have OGI connectors on the card faceplate; available connector termination
types are SC, ST, and FC. Fiber optic cables are routed to the front of the OC-N cards.
The ONS 15600 is powered using –48 VDC power but may range from –40.5 to –72 VDC. Input power
is accessible from the sides of the bay, and output power is accessible at the rear of the bay. Cisco
supports dual office-power feeds only.
Install the ONS 15600 in compliance with your local and national electrical codes:
•United States: National Fire Protection Association (NFPA) 70; United States National Electrical
Code
•Canada: Canadian Electrical Code, Part I, CSA C22.1
•Other countries: If local and national electrical codes are not available, refer to IEC 364, Part 1
through Part 7.
1.2 Bay Installation
In this chapter, the terms “ONS 15600” and “bay assembly” are used interchangeably. In the installation
context, these terms have the same meaning. Otherwise, bay assembly refers to the physical steel
enclosure that holds the shelves and power distribution unit (PDU), and ONS 15600 refers to the entire
system, both hardware and software.
To install the ONS 15600, you must first unpack the bay assembly. Two custom ramps and two dollies
are available to assist you with the removal of the bay from the shipping pallet and transportation to the
installation location. Figure 1-1 shows the bay assembly with the dollies installed.

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1.2 Bay Installation
Figure 1-1 ONS 15600 with Dollies Installed
The ONS 15600 shelf measures 25 inches high, 19-9/16 inches wide, and 23 inches deep (63.5 cm H x
49.7 cm W x58.3 cm D). A maximum of three ONS 15600s can fit in a custom seven-foot equipment
rack. The ONS 15600 that ships within a rack is 83-7/8 inches high, 23-5/8 inches wide, and
23-5/8 inches deep (213 cm H x 60 cm W x 60 cm D).
Note Cisco supports only one ONS 15600 shelf per bay.
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1.3 Front Door
1.3 Front Door
The ONS 15600 features a door to the front compartment that you can open by releasing the latches on
the bottom left and right sides of the door. The front door provides access to the shelf, cable-management
tray, and fans (Figure 1-2).
Figure 1-2 ONS 15600 Front Door
You can remove the front door of the ONS 15600 to provide unrestricted access to the front of the shelf.
A label is pasted in a box in the center of the swing-down door that covers the fiber routers (Figure 1-3).
This label designates the position of the rack and shelf in a lineup.
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ESD jack
Door pivot point
Door latches

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1.4 Rear Covers
Figure 1-3 Bay Label
The front door also has a Class I laser warning (Figure 1-4).
Figure 1-4 Laser Warning Label
1.4 Rear Covers
The ONS 15600 has an optional plastic rear cover that is held in place with six 6-32 x 3/8 inch Phillips
screws. This plastic cover provides additional protection for the cables and connectors on the backplane
(Figure 1-5).
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1.4 Rear Covers
Figure 1-5 Plastic Rear Cover
Figure 1-6 shows the bus bar covers.
Figure 1-6 PDU Bus Bar Cover
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1.5 Cable Routing
1.5 Cable Routing
The narrow and wide cable routing modules (CRMs) can be installed on the sides of the bay to manage
and contain the optical cables as they are routed away from the bay. You can use both types of fiber
routing systems with overhead or under-floor cabling.
1.6 Customer Access Panel
The Customer Access Panel (CAP or CAP2) is located in the middle on the rear of the shelf. The CAP
and CAP2 provide an alarm pin field, timing, and LAN connections. The CAP or CAP2 plugs into the
backplane using 2mm Hard Metric connectors with 752 pins and is held in place with one large captive
bolt and multiple screws.
The CAP2 has the additional capability of providing provisionable power monitoring.
Figure 1-7 shows the location of the CAP or CAP2 on the back of the shelf.
Note The ONS 15600 supports only T1 (100 ohm) building integrated timing supply (BITS).

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1.6 Customer Access Panel
Figure 1-7 Rear of the ONS 15600, Including the CAP/CAP2
The ONS 15600 CAP and CAP2 provide the following features:
•BITS T1 (100 ohm) interfaces via wire-wrap pins.
•Two Ethernet interfaces via RJ-45 connectors with internal transformer isolation.
•An EIA/TIA-232 craft interface via DB-9 connectors. This interface is surge-protected and provides
EMI filtering. Two interfaces are provided for redundancy.
•Four audio alarm interfaces via a DB-15 connector that is surge-protected and EMI-filtered. The
audio alarm indication is provided by the Timing and Shelf Controller (TSC) card and this interface
can receive a signal to disable the audio alarm.
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1.6 Customer Access Panel
•Four visual alarm interfaces via a DB-15 connector that is surge-protected and EMI-filtered. The
visual alarm indication is provided by the TSC card and the signal is connected to the PDU where
LEDs indicate the alarm status and severity.
•Environmental (external) alarms and controls (16 inputs and 16 outputs) via wire-wrap pins. The
interface is surge-protected and provides isolation by using an opto-isolator for alarm inputs and
relays for alarm outputs. By connecting to different wire-wrap pins on the CAP/CAP2, the alarm
outputs can be configured for either normally open (NO) or normally closed (NC) operation. Alarms
are initiated by shorting these contacts. The alarm input interface provides a pair of positive and
negative wire-wrap pins.
The isolation and termination meet the intra-building lightning surge specification in Telcordia
GR-1089. The CAP and CAP2 have –48 VDC monitoring with an I2C interface and nonvolatile memory
to store the CAP/CAP2 revision information.
Figure 1-8 shows the CAP faceplate.
Figure 1-8 CAP Faceplate and Connections
If the CAP/CAP2 fails, the node raises an EQPT alarm. You can replace the CAP/CAP2 on an in-service
node without affecting traffic. To replace a CAP, refer to the Cisco ONS 15600 Procedure Guide. Always
replace the CAP during a maintenance window.
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Wire
wrap
pins
LAN
RJ-45
Craft
DB-9
Audible
Alarm
DB-15
BITS
OUT
BNC
BITS
OUT
BNC
LAN
RJ-45
Craft
DB-9
BITS
IN
BNC
BITS
IN
BNC
Serial Number Label
Part Number Label
Bar Code and
Country of Origin
Labels
Backplane
connectors
Visual
Alarm
DB-15

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1.7 Alarm, Timing, LAN, and Craft Pin Connections
1.7 Alarm, Timing, LAN, and Craft Pin Connections
Caution Always use the supplied ESD wristband when working with a powered ONS 15600 or any ONS 15600
components. Plug the wristband cable into one of the ESD jacks located on the lower-left outside edge
of the bay assembly and at the bottom rear of the shelf.
The ONS 15600 has a backplane pin field located at the bottom rear of the shelf that is part of the
CAP/CAP2. The CAP/CAP2 provides 0.045 square inch (0.290 square centimeter) wire-wrap pins for
enabling alarm inputs and outputs and timing input and output. This section describes the backplane pin
field and pin assignments, as well as timing and LAN connections. See the “1.6 Customer Access
Panel” section on page 1-7 for more information.
1.7.1 External Alarm and Control Contact Installation
The external (environmental) alarm contacts consist of the wire-wrap pin field and two D-Sub 15s. The
alarm pin field supports up to 16 alarm inputs (external alarms) and 16 alarm outputs (external controls).
The two D-Sub 15s support four audible alarms, four visual alarms, one alarm cutoff (ACO), a PDU Fail
A, and a PDU Fail B.
By connecting to different wire-wrap pins on the CAP or CAP2, the alarm outputs can be configured for
either normally open (NO) or normally closed (NC) operation (see Figure 1-9). The alarm inputs consist
of two wire-wrap pins on the CAP or CAP2 and the alarm outputs consist of three wire-wrap pins.
1.7.1.1 Visual and Audible Alarms
Visual and audible alarm contacts are provisioned as Critical, Major, Minor, and Remote. Figure 1-9
shows alarm pin assignments.