Hubbell Pulsecom CLEI O3-3D3D User manual

Practice Section IN1698
Issue V02.00, May 2013
OC3 TO DS3 MULTIPLEXER
O3-3D3D
U.S. Patents 6868219, 7359410, 7379481
CLEI™ Code SOOMAECA
Trademarks used in this manual:
Attachmate is a registered trademark of Attachmate Corporation.
CLEI is a trademark of Telcordia Technologies, Inc. dba iconective.
Microsoft and Windows are registered trademarks of Microsoft, Incorporated.
Pulsecom is a registered trademark of Hubbell Incorporated.
The Fiber Backhaul logo is a registered trademark of Pulse Communications, Incorporated.
Westell is a registered trademark of Westell, Incorporated.
©2013 Pulse Communications Incorporated. All rights reserved.
1
ETL LISTED
CONFORMS TO
UL STD 60950-1
CONTENTS PAGE
1INTRODUCTION................................................2
1.1 Reason for Reissue.........................................2
1.2 Description ......................................................2
1.3 Features..........................................................3
2APPLICATIONS ................................................5
3FUNCTIONAL DESCRIPTION..........................8
3.1 OC3 Circuitry...................................................8
3.2 DS3 Circuitry...................................................9
3.3 Local Alarms....................................................9
4INSTALLATION...............................................12
4.1 Controls and Indicators .................................13
4.2 Select and Install Mounting...........................16
4.3 Make Power and Alarm Connections............18
4.4 Install Transceiver and Module .....................18
4.5 Make OC3 Connections................................19
4.6 Make DS3 Connections.................................19
5CRAFT PORT SETUP.....................................21
5.1 Access the Craft Port ....................................21
5.2 Configure Operating Mode............................24
6PROVISIONING...............................................28
6.1 Provisionable Features..................................28
6.2 Performance Monitoring................................29
6.3 Alarm Messages............................................30
6.4 Loopbacks.....................................................32
7DCC TL1 SUPPORT........................................34
8SPECIFICATIONS...........................................35
9MAINTENANCE...............................................36
10 CUSTOMER SERVICE....................................36
Figure 1: O3-3D3D Unit

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1 INTRODUCTION
This practice describes the Pulsecom®O3-3D3D OC3 to DS3 Multiplexer, shown in Figure 1. Installation
instructions and engineering references are included.
1.1 Reason for Reissue
This practice has been reissued to add Figure 11.
1.2 Description
The O3-3D3D is a self-contained synchronous optical network (SONET) multiplexer (mux) that converts
three DS3 signals into an OC3 optical signal using synchronous transport signal (STS-1) mapping. The unit
is designed for bookend operation with a far-end O3-3D3D, a far-end SONET mux or, when only a single
DS3 is being transported, a far-end O3D3-series unit such as the O3D3-MO.
The O3-3D3D provides performance monitoring (PM) and can be used as a DS3 network interface unit (NIU)
at subscriber sites. PM capabilities include alarm indication signal – customer installation (AIS-CI) and
remote alarm indication – customer installation (RAI-CI) alarming plus network performance report messages
(NPRM) per American National Standards Institute (ANSI) T1.403. DS3 loopbacks are supported as well.
O3-3D3D units are Type 400 units suitable for use in 3O3D3-CPL2C series, 2O3D3-19A series, O3D3-RT
series, or similar shelves aswell as in Westell®CP528 enclosures equipped with Pulsecom CSSI Kits.
O3-3D3D units are not shipped with optical transceivers installed. Ordering codes for the board as well as for
the available small form-factor pluggable (SFP) transceivers are shown in Table 1.
NOTES
1) The O3-3D3D utilizes the same OC3 SFP optical transceivers as the Pulsecom
O3D3-MO, O3-4D1 family, and O3-12D1 family of products.
2) Throughout the remainder of this practice, “O3-3D3D” will refer to the unit with its
transceiver installed, unless otherwise noted.

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Table 1 — O3-3D3D Board and OC3 Transceiver Ordering Codes
Ordering
Code
CLEI™
Code
Wave-
length
Link
Loss
Budget
Maximum
Output
Level
Maximum
Input
Level
Number
of Fibers
Type
of Fiber
A. Board (Without Transceiver)
O3-3D3D SOOMAECA – – – – – –
B. Available Optical Transceivers
SFP-OC3-1471-30 SOOTAGGM 1471 nm*
29 dB 0 dBm −8 dBm 2
Single-
Mode
SFP-OC3-1491-30 SOOTAGKM 1491 nm*
SFP-OC3-1511-30 SOOTAGLM 1511 nm*
SFP-OC3-1531-30 SOOTAGMM 1531 nm*
SFP-OC3-1551-30 SOOTAGNM 1551 nm*
SFP-OC3-1571-30 SOOTAGPM 1571 nm*
SFP-OC3-1591-30 SOOTAGRM 1591 nm*
SFP-OC3-1611-30 SOOTAGSM 1611 nm*
SFP-OC3-1310-19 SOOTAGTM 1310 nm 19 dB −8 dBm −7 dBm 2
SFP-OC3-1550-29 SOOTAGUM 1550 nm 29 dB 0 dBm 0 dBm
SFP-OC3-SF13-13 SOOMAB8A 1310 nm 13 dB −8 dBm 0 dBm 1
SFP-OC3-SF15-13 SOOMAB9A 1550 nm
SFP-OC3-MM13-10 SOOTAHMM 1310 nm 10 dB −14 dBm −14 dBm 2 Multi-Mode
*Coarse Wavelength Division Multiplexing (CWDM).
1.3 Features
The O3-3D3D provides the following features:
•Supports 24 VDC to 48 VDC input voltage range
•Supports delivery of three DS3s over a single fiber using Pulsecombi-directional SFPs or up to 12 DS3s
over a single fiber using Pulsecom CWDM SFPs with suitable optical couplers and four O3-3D3D units
•Climate-hardened for operation in GR-3108 Class 3 environments
•Switch-to-Protect capability when a pair of O3-3D3D units is installed in 2O3D3-19A series and
3O3D3-CPL2C REVB shelves in bookend mode to provide facility and hardware protection switching in
mission-critical applications
•AIS, AIS-CI, RAI, and RAI-CI alarming per ANSI T1.403
•NPRM per ANSI T1.403
•Far-end alarm control (FEAC) and in-band DS3 loopbacks and loopback timeout options
•Plug-in replacement for Pulsecom O3D3-MO units deployed in shelves that accommodate Type 400
plug-ins as a means to increase DS3 capacity

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•SONET data communication channel (DCC) transaction language-1 (TL1) support
•Far-end TL1 provisioning and status available via near-end craft port
•Plug-in replacement for Pulsecom O3-4D1 family and O3-12D1 family units as a means to transition
subscribers from DS1 to DS3 services
•SONET STS-1 mapping:
— STS-1 #1 carries DS3 #1
— STS-1 #2 carries DS3 #2
— STS-1 #3 carries DS3 #3
•Normal and Low DS3 transmit signal level option
•Framing: Auto, C-bit parity, M13, and unframed
•Instant Default feature that permits restoring all settings to their default state without the need to use the
craft port
•Utilizes Pulsecom “Optionless SONET” technology to minimize OC3 provisioning
•Standard DS3 BNC faceplate connectors
•Standard DB-9 RS-232 craft port front-panel jack (9600 baud, 8-bit bytes, no parity, and one stop bit) to
access performance information and advanced provisioning capabilities
•Traditional DC contact closures to aid end-to-end sectionalization
•Simple front-panel indicators for OC3, DS3, ACT (when provisioned), and UNIT operating status
•Fiber attenuators not required to perform an optical loopback with a fiber jumper when using the
SFP-OC3-1310-19 transceiver

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2 APPLICATIONS
Figure 2, Figure 3, Figure 4, Figure 5, Figure 6, and Figure 7 show typical O3-3D3D applications.
Figure 2: Typical Bookend Application
Figure 3: Switch-to-Protect Application

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Figure 4: Deployed in a CP528 Outside Plant (OSP) Enclosure,
Bookend Application
Figure 5: Delivering One DS3, Utilizing Existing O3D3-MO

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Figure 6: Typical Integrated Application
Figure 7: Deployed in a CP528 OSP Enclosure,
Integrated Application

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3 FUNCTIONAL DESCRIPTION
Up to three DS3 circuits are combined into a single OC3 signal by using STS-1 mapping. STS-1 #1 carries
DS3 #1, STS-1 #2 carries DS3 #2, and STS-1 #3 carries DS3 #3. The DS3 payload is not modified. Figure 8
shows a functional block diagram.
3.1 OC3 Circuitry
Optical signal synchronization is established when the Framer has located and locked on to the Synchronous
Transport Signal framing pattern. Should there be a loss of frame synchronization, an alarm would be
generated.
The recovered data contains payload as well as Section, Line, and Path Overhead (POH). The Section and
Line Overhead are collectively considered Transport Overhead (TOH). TOH processing takes place by the
processing of the B2 byte, Bit Interleaved Parity (BIP-8), and Line Far-End Block Error (FEBE). Finally, a
detection of Line Remote Defect Indication (RDI) and Line Alarm Indication Signal (AIS) is performed.
Pointer tracking is performed by analyzing the H1/H2 bytes to determine the location of the J1 POH byte.
Loss Of Pointer (LOP) and AIS alarms are provided for the STS-1 signal. The B3 BIP-8 is checked for parity,
and the number of bit or block errors is counted. The G1 byte is checked, and RDI status and the number of
FEBEs are counted. All Section and Line Overhead bytes are processed at this time.
Figure 8: O3-3D3D Functional Block Diagram
SURGE
PROTECTION
SURGE
PROTECTION
DS3
LIU
TRANSFORMERS
POWER
CONVERTER
INSTANT
DEFAULT
SWITCH
ALARM
RELAYS
DS3
BNCs
EEPROM
OC3 FRAMER
STS-1 MAPPER
DS3 FRAMER
RS-232
Driver
OC3
LC
DB-9
VOLTAGE
INPUT
CPU
LEDs

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3.2 DS3 Circuitry
The DS3 data located in an STS-1 is extracted and passed into a resynchronization block, where it uses a
Phase-Lock Loop (PLL) to transmit data into a synchronous DS3 format. A reference clock is used to remove
systematic jitter, and Bipolar 3-Zero Substitution (B3ZS) encoding takes place.
The transmit path receives incoming DS3 data, reformats it into an STS-1, and presents it to the optical
interface circuitry. All overhead is processed in this path as well. B3ZS-encoded data is received and
reformatted into a serial bit stream. The serial data is passed to a PLL to recover clock. The B3ZS signal is
decoded, and coding violations are detected.
The DS3 signal is converted to parallel data, mapped into an STS-1 signal format, and placed into the STS-1
location. POH bytes are appended to the frame. FEBE and Path RDI can be inserted, depending upon the
status of local alarms.
Data is clocked into an expansion buffer to decouple the data. Data is re-clocked by a 155 MHz clock,
scrambled, and presented as a differential signal to the OC3 Transceiver.
Each DS3 output can be set to a Normal (default) or Low level to accommodate long or short coaxial cables.
The unit is factory-set to enable loopbacks with a 60-minute loopback timeout. The craft port can be used to
selectively inhibit loopback as well as select loopback timeouts. See Section 6.4 for additional loopback
information.
When operating in a bookend configuration (see Figure 3), the O3-3D3D can provide 1+1 protection
switching for mission-critical applications. In this operating mode, a pair of O3-3D3D units is installed in a
2O3D3-19A series shelf or a 3O3D3-CPL2C REVB shelf at each end of a protected link. The DS3 ports on
the rear of the 2O3D3-19A series shelf or a 3O3D3-CPL2C REVB shelf must be used in this configuration,
and each one of the near-end O3-3D3D units is connected to a far-end O3-3D3D over a fiber facility using
single fiber, dual fiber, WDM, and/or CWDM SFPs as shown in Figure 3. Before a failure, all three DS3s are
carried by a set of O3-3D3Ds and associated fiber facilities, and the other set of O3-3D3Ds and associated
fiber facilities are idle. After a facility or O3-3D3D failure, all three DS3 signals switch simultaneously to the
alternate O3-3D3D and fiber facility. Since no traffic is sent through the idle O3-3D3D, its faceplate DS3
LEDs and ACTIVE LED will be off, and its craft port will show accumulated ES-L, LOSS-L, and SES-L.
3.3 Local Alarms
Table 2 and Table 3 provide alarm information for a bookend configuration.
Table 2 — O3-3D3D DC Contact Closure Alarms
Lead Pin Alarm Indication
T
R 7 13 Contact closure between these leads indicates OC3 alarm
T1
R1 41 47 Contact closure between these leads indicates one or more DS3 alarms
NOTE:Simultaneous T/R and T1/R1 contact closures indicate internal unit failure or loss of power.

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Table 3 — O3-3D3D Alarm Behaviors
Alarm
Stimulus
Applied
Unit
LED
State
OC3 DS3
Craft
Port
Message
Alarm Messages
LED
State
Alarm
Contacts
LED
State
Alarm
Contacts
Sent
Toward
OC3 (FE)
Dropped
at
DS3 (NE)
ACT
LED
Loss of
Power OFF OFF CLOSED OFF CLOSED – – – OFF5
Missing OC3
Transceiver RED OFF CLOSED OFF CLOSED MISSING OPTICS – AIS OFF5
OC3-LOS GREEN RED CLOSED YELLOW OPEN OC3-LOS RDI-L
RDI-P
RDI-V
DS3-RAI3
AIS1GREEN
OC3 Low
RX PWR GREEN YELLOW OPEN GREEN OPEN OC3 RX PWR – – GREEN
DS3-LOS
from NE GREEN GREEN OPEN RED CLOSED DS3-LOS AIS (AIS-CI
disabled)2
AIS-CI (AIS-CI
enabled)2
– GREEN
DS3-LOF
from NE GREEN GREEN OPEN RED CLOSED DS3-LOF (NE) OOF – GREEN
DS3-AIS
from NE GREEN GREEN OPEN YELLOW OPEN DS3-AIS (NE) AIS (AIS-CI disabled)
AIS-CI (AIS-CI
enabled)
– GREEN
DS3-RAI
from NE GREEN GREEN OPEN YELLOW OPEN DS3-RAI (NE) RAI (RAI-CI disabled)
RAI-CI (RAI-CI
enabled)
– GREEN
DS3-LOF
from FE GREEN GREEN OPEN YELLOW OPEN DS3-LOF (FE) RAI3OOF GREEN
DS3-AIS
from FE GREEN GREEN OPEN YELLOW OPEN DS3-AIS (FE) RAI3AIS GREEN
DS3-AIS-CI
from FE GREEN GREEN OPEN YELLOW OPEN DS3-AIS-CI (FE) RAI3AIS-CI GREEN
DS3-RAI
from FE GREEN GREEN OPEN YELLOW OPEN DS3-RAI (FE) – RAI GREEN
DS3-RAI-CI
from FE GREEN GREEN OPEN YELLOW OPEN DS3-RAI-CI (FE) – RAI-CI GREEN

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Table 3 — O3-3D3D Alarm Behaviors (Continued)
Alarm
Stimulus
Applied
Unit
LED
State
OC3 DS3
Craft
Port
Message
Alarm Messages
LED
State
Alarm
Contacts
LED
State
Alarm
Contacts
Sent
Toward
OC3 (FE)
Dropped
at
DS3 (NE)
ACT LED
DS3-
Excessive
BPVs
GREEN GREEN OPEN YELLOW OPEN DS3
Excessive
BPVs
– – GREEN
Fan Environ-
mental Alarm YELLOW GREEN OPEN GREEN OPEN Tempera- ture Too
High
– – GREEN
NOTE 1: Using the craft port, the response to an OC3-LOS can be provisioned from the OC3 configuration menu either to send AIS toward
the DS3 drop or to turn off the DS3 transmitter.
NOTE 2: Using the craft port, the response to a DS3-LOS from the near end can be provisioned from the DS3 configuration menu to either
send AIS toward the OC3 or idle code. If the AIS option is selected, AIS-CI will be sent only when the O3-3D3D is
provisioned as a Remote unit and the AIS-CI option is enabled (default) from the DS3 configuration menu.
NOTE 3: When the O3-3D3D is deployed at the network interface, the customer equipment will originate RAI back toward
the network under this condition; RAI-CI will not be generated by the O3-3D3D.
NOTE 4: AIS = Alarm Indication Signal. AIS-CI = Alarm Indication Signal-Customer Installation. BPV = Bipolar Violation. FE = Far End.
LED = Light Emitting Diode. LOF = Loss of Frame. LOS = Loss of Signal. NE = Near End. OOF = Out of Frame.
RAI = Remote Alarm Indication. RAI-CI = Remote Alarm Indication-Customer Installation.
RDI = Remote Defect Indication. RDI-L = Remote Defect Indication-Line. RDI-P = Remote Defect Indication-Path.
RDI-V = Remote Defect Indication -Virtual Tributary.
NOTE 5: The ACT LED is also off if the O3-3D3D is operating in switch-to-protect mode and the companion O3-3D3D unit is carrying traffic.

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4 INSTALLATION
The O3-3D3D complies with Part 15 of the Federal Communications Commission (FCC) rules when used in
the recommended mountings and installed as described in this manual. Operation is subject to the following
two conditions:
1) This device may not cause harmful interference, and
2) This device must accept any interference received, including interference that may cause undesired
operation.
DANGER
The O3-3D3D employs Class 1 laser products. To avoid injury, do not look directly into the
optical transceiver or into the fiber cable. Note that the light is invisible; the optical signal
cannot be detected by the eye.
Per GR-1089-CORE June 2006, Section 9.8, the battery return (BR) of this unit does not have any internal
connection to the unit’s frame and, therefore, can be used in either DC-C (common bonding and grounding
systems) or DC-I (isolated bonding and grounding systems). The chassis ground wire must be at least as large
as the wire used for the BR.
WARNINGS
1. This unit includes components that are susceptible to damage from static electricity.
DO NOT handle units without protection from electrostatic discharge.
2. When not in use, optical connectors must be covered by dust caps to keep airborne
particles off connecting surfaces and to preserve optimum performance.
3. Always clean fiber plugs with an approved fiber-cleaning product, following appropriate
procedures, before plugging the fiber into the O3-3D3D.
4. O3-3D3D units can be equipped with long-range transceivers which produce a higher
optical output than the receiver can tolerate. This capability is intended for applications
where long lengths of fiber will attenuate the signal. If a long-range transceiver is used
in an application with short fibers, a 15 dB attenuator should be installed on the
transmit port to prevent bit errors and possible damage to the receiver.
5. When connecting the O3-3D3D optical output to test equipment, verify that the
maximum input level specification of the test equipment is not exceeded by the
O3-3D3D output. Even intermediate-range optics can produce levels too high for some
test equipment, so attenuators might be required. In general, when connecting the
O3-3D3D to test equipment, Pulsecom recommends a 5 dB attenuator when
intermediate-range optics are installed in the O3-3D3D and a 15 dB attenuator when
long-range optics are installed in the O3-3D3D. Check the specifications of the test
equipment to determine if this precaution is adequate or necessary.

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4.1 Controls and Indicators
4.1.1 Front Panel
The front panel of the O3-3D3D provides connection to the OC3 and DS3 signals as well as the craft port.
LEDs show OC3, DS3, ACT (active), and UNIT status. Front-panel connectors and indicators are shown in
Figure 1 and described in Table 4.
Each of the three front-panel DS3 interfaces consists of an “IN” BNC connector and an “OUT” BNC
connector.
The following cable options are available from Pulsecom:
•CPM-DS3 Bulkhead DS3 Connectors and Cable Kit for indoor applications and use with the 3O3D3-
CPL2C series locking wall-mounted enclosure or for use with BP-19 or BP-23 rack-mounted bulkhead
plates and the 2O3D3-19A series rack-mounted shelf. Each kit provides two bulkhead-mounted BNC
jacks and coaxial cables that connect these jacks to the O3-3D3D faceplate connector.
•CPM-DS3P DS3 Connectors, Protectors, and Cable Kit for outdoor applications with the CP528 OSP
Enclosure/Demarc equipped with the Pulsecom CSSI. Each kit provides two BNCjacks that mount in the
CP528/CSSI demarcation location and coaxial cables that connect these jacks to the O3-3D3D faceplate
connector via Enginuity SPM-DS3-R or equivalent primary DS3 protectors.
•CPM-3DS3 Bulkhead DS3 Connectors and Cable Kit for indoor 3O3D3-CPL2C REVB switch-to-protect
applications. The CPM-3DS3 provides three sets of bulkhead DS3 coax demarc connections and cables
that extend to the 3O3D3-CPL2C REVB back-panel DS3 connectors.

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Table 4 — O3-3D3D Front-Panel Connectors and Indicators
Connector Function
DS3 #1, #2,
and #3 BNC “IN” and BNC “OUT” connector pair for the three DS3 interfaces.
RX OC3 input (receive) LC optical connector.
TX OC3 output (transmit) LC optical connector.
CRAFT
RS-232 DB-9 female port for access to PC running HyperTerminal or other VT-100 emulation program.
Indicator Function
UNIT Lights green to show normal unit operation.
Lights red to show unit/configuration failure or no SFP optical module installed.
Lights yellow to show a fan environmental alarm.
OC3 Lights green to show that the OC3 signal is connected and operating properly.
Flashes green to show that the OC3 loopback has been activated.
Lights red to show loss of signal, loss of framing, loss of pointer, or out of frame;
also shows SFP optical module failure.
Lights yellow to show far-end trouble for the associated OC3, a non-OC3 transceiver
installed, an optical receive level below the SFP minimum, or an unrecognized OC3
transceiver (see NOTE).
Turns OFF to show no SFP optical module installed.
DS3 #1, #2,
and #3 Lights green to show that the corresponding DS3 is operating properly if it has been enabled.
Flashes green to show that a loopback in the corresponding DS3 has been activated.
Lights red to show a loss of signal in the corresponding enabled DS3.
Lights yellow to show an alarm indication signal (unframed all ones) has been detected
or if BPVs exceed 10-4 in the corresponding DS3.
Turns OFF to show the DS3 has not been enabled.
ACT When units are provisioned for “Switch-to-Protect” operation, this LED will be green
when the unit is the “active” unit.
When the unit is in “standby” mode, the LED will be off.
If the system is not configured for protection operation, this LED will be on at all times.
NOTE:The unit will attempt to operate with an unrecognized OC3 transceiver; however, since the
transceiver temperature and distance ranges are not known, this unrecognized part should be replaced as
soon as possible with a transceiver listed in Table 1.
The front-panel DB-9 communications interface is an asynchronous VT-100 serial port. This craft port
operates at 9600 baud with 8 bits of data, no parity, no flow control, and 1 stop bit. Refer to Section 5 for
detailed craft port instructions.

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4.1.2 Backplane
Backplane pinouts for alarm contacts, power, and ground (GND) are listed in Table 5.
Table 5 — Backplane Pin Assignments
Pin Function Description
47 DS3 Alarm Contact Dry Contact
41 DS3 Alarm Contact Dry Contact
35 Negative Supply Input Input
17 Positive Supply Input Input
13 OC3 Alarm Contact Dry Contact
7 OC3 Alarm Contact Dry Contact
1, 27 Chassis GND Input
OC3 ALARM OR
POWER FAILURE
56
54
52
50
48
46
44
42
40
38
55
53
51
49
47
45
43
41
39
37
CARD-EDGE
CONNECTOR
NEGATIVE SUPPLY INPUT
CHASSIS GND
R
36
34
32
30
28
26
24
22
20
35
33
31
29
27
25
23
21
19
18
16
14
12
10
8
6
4
2
17
15
13
11
9
7
5
3
1
REAR VIEW
CHASSIS GND
T
POSITIVE SUPPLY INPUT
R1
T1
DS3 ALARM OR
POWER FAILURE

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4.1.3 Printed Circuit Board
When the provisioning needs to be restored to the factory defaults, the instant default feature can be used.
Unplugging the card, changing the position of switch S2-1, and plugging the card back in will return all
parameters to their default values. Note that the initial position of S2-1, shown in Figure 9, is not important;
the O3-3D3D detects a change in the position of S2-1 during power-up as an instruction to restore parameters
to their default values. Switch positions S2-2, S2-3, and S2-4 are not used.
Figure 9: S2-1 Switch Location on Printed Circuit Board
4.2 Select and Install Mounting
Table 6 provides a list of the mountings that should be used with the O3-3D3D. For applications requiring
loss-of-power immunity, use redundant power such as that available with the 2O3D3-19A series or
3O3D3-CPL2C series.
Switch-to-protect operation requires the use of the 2O3D3-19A, 2O3D3-19A REVB, and/or 3O3D3-CPL2C
REVB mountings. When using the 2O3D3-19A or 2O3D3-19A REVB, it must be powered by -48 VDC in
switch-to-protect applications. The 3O3D3-CPL2C REVB can be powered by either 24 VDC or -48 VDC in
switch-to-protect applications.
In switch-to-protect applications, ensure that SW1 SWITCH TO PROTECT on the backplane of these
mountings is set to the ENABLE position at both ends of the circuit. This setting activates use of the
backplane DS3 connections (rather than faceplate O3-3D3D DS3 connections) on the 2O3D3-19A,
2O3D3-19A REVB, and/or 3O3D3-CPL2C REVB mountings. Switch-to-protect operation is only avail-
able when two sets of O3-3D3D units are operating in bookend mode, as shown in Figure 3.
Use standard hardware to attach the mounting securely to the rack, door, wall, or backboard. See the
appropriate Pulsecom Practice Section for detailed mounting instructions.
S2

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Table 6 — Recommended Mountings for O3-3D3D Modules
Model CLEI Code Description
2O3D3-19A
REVB SOM2300C
Two O3-3D3D positions; rack or backboard mounting; for central office
(CO), controlled environment vault (CEV), hut, and customer-premise
equipment (CPE) applications; −48 or 24 VDC input. Supports switch-to-
protect operation when using −48 VDC input.
3O3D3-CPL2C
REVB SOM7J10A
Two O3-3D3D positions in a locking, hinged, wall-mounted enclosure;
provision for DS3 bulkhead connections with a CPM-DS3 bulkhead cable
kit (ordered separately); −48 VDC or 24 VDC input; FRC 358C.
Supports switch- to-protect operation when used with a CPM-3DS3
cable kit.
CP528 OSP
Enclosure
Equipped with
CSSI
NCM1FEEC
Provision for one O3-3D3D powered by subscriber 24 VDC, local
−48 VDC, Pulsecom 120 VAC to −48 VDC Power Node with battery
backup, or Pulsecom Span Power units. A CPM-DS3P cable kit is
required for each DS3.

Practice Section IN1698
Issue V02.00, May 2013
18
4.3 Make Power and Alarm Connections
Follow the steps in Procedure 1 to make power and alarm connections. Each O3-3D3D module has two
DC contact closures available for local alarm reporting.
Procedure 1. Making Power and Optional Alarm Connections
STEP ACTION
1 Connect frame ground according to the appropriate mounting practice.
2 Ensure that power is OFF.
3 Connect the power supply and ground to the proper mounting terminals as
described in the appropriate practice. Note that when using the 2O3D3-19A OR
2O3D3-19A REVB in a switch-to-protect application, −48 VDC supply is
required.
4 Wire local alarms as described in the appropriate practice.
5 If using the 2O3D3-19A series shelf or 3O3D3-CPL2C REVB enclosure, ensure
that SW1 SWITCH TO PROTECT located on the backplane is set to the OFF
position for normal (unprotected) operation OR to the ENABLE position for
switch-to-protect operation.
6 Turn power ON.
4.4 Install Transceiver and Module
Follow the steps in Procedure 2 to install the O3-3D3D transceiver and module.
Procedure 2. Installing the O3-3D3D Transceiver and Module
STEP ACTION
1 Carefully plug the desired SFP transceiver (see Table 1) into its front-panel socket.
Ensure that it snaps into place.
2 Plug the O3-3D3D module into the desired mounting.
3 Verify that the front-panel UNIT indicator is green.
•If the UNIT indicator does not turn on, verify that power is connected to the
mounting and that a good fuse is properly installed for the mounting slot in
use.
•If the UNIT indicator is red, verify that the SFP transceiver is properly latched
into its socket. If the LED remains red, the O3-3D3D module is defective and
should be replaced.

Practice Section IN1698
Issue V02.00, May 2013
19
4.5 Make OC3 Connections
O3-3D3D modules have LC optical connectors. Follow the steps inProcedure 3 to make OC3 connections.
DANGER
Units employ Class 1 laser products. To avoid injury, do not look directly into the optical
transceiver or into the fiber cable. Note that the light is invisible; the optical signal cannot be
detected by the eye.
Procedure 3. Making OC3 Connections
STEP ACTION
1 Before plugging in the OC3 fiber, verify that the O3-3D3D front-panel OC3
indicator is red. If the OC3 indicator is off or green, the unit is defective and
should be replaced.
2 Remove the protective dust cover from the front-panel OC3 LC jack.
3 Plug in the OC3 fiber cables equipped with LC male connectors until they snap
into place. Use proper fiber cable routing practices.
4 If the far-end OC3 connection has already been made, the OC3 indicator should
turn green or, if there is a far-end trouble, turn solid yellow. If the OC3 indicator
remains red:
•Verify that the correct laser transceiver is properly latched into the OC3
socket.
•Verify that fiber cables are in good condition and that fiber connectors are
clean. If required, clean the connectors with special lint-free pads in
accordance with standard procedures.
•Verify that the optical path loss does not exceed the capabilities of the far-end
laser. If so, replace the far-end unit with one designed to support longer OC3
fiber links.
•If the OC3 indicator remains red, the O3-3D3D module is defective and should
be replaced.
4.6 Make DS3 Connections
The O3-3D3D module has three pairs of front-panel BNC connectors. Pulsecom recommends using one of the
following items (ordered separately):
•Standard coaxial cables terminated with BNC connectors (ordered locally).
•CPM-3DS3 – Used in switch-to-protect applications with the 3O3D3-CPL2C REVB mounting. The
CPM-3DS3 provides three sets of DS3 BNC bulkhead demarcation jacks and a cable kit.

Practice Section IN1698
Issue V02.00, May 2013
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•CPM-DS3 – When deployed in 2O3D3-19A series shelves with BP-19 or BP-23 rack-mounted bulkhead
plates or in 3O3D3-CPL2C series enclosures, the Pulsecom CPM-DS3 bulkhead cable kit provides a pair
of bulkhead-mounted DS3 BNC connectors and two short connectorized BNC cables to link the bulkhead
connectors to the O3-3D3D front panel.
•CPM-DS3P – Used for outdoor applications with the CP528 OSP Enclosure/Demarc equipped with the
Pulsecom CSSI. Each Pulsecom CPM-DS3P kit provides two BNC jacks that mount in the CP528/CSSI
demarcation location and coaxial cables that connect these jacks to the O3-3D3D faceplate connector via
Enginuity SPM-DS3-R or equivalent primary DS3 protectors.
See Procedure 4 and Figure 1.
Procedure 4. Making DS3 Connections
STEP ACTION
1 Plug in the DS3 coaxial cables for each of the DS3s to be turned up. Use O3-3D3D
faceplate DS3 connections or, for switch-to-protect applications, connect the DS3
cables to the 2O3D3-19A series rear panel or the 3O3D3-CPL2C REVB bulkhead
using the CPM-3DS3 cable kit.
2 If the far-end DS3 cable connections have already been made to an active DS3
device, the corresponding near-end DS3 LED should turn green or, if there is a far-
end trouble, turn solid yellow.*If the DS3 indicator remains red:
•Verify that the cable is in good condition.
•Verify that the cable length is not too long (refer to Specifications for coaxial
cable types and corresponding DS3 ranges).
•The DS3 output level might need to be adjusted. A PC running HyperTerminal
and an RS-232 cable must be used to provision the cable length. Refer to
Sections 5 and 6 of this practice.
•Make sure that the near-end and far-end framing is correct and that the
O3-3D3D is provisioned to match the framing.
•Verify that the DS3 equipment at the far end of the DS3 cable is operating
properly.
•If the DS3 indicator remains red, the O3-3D3D module is defective and should
be replaced.
3 Suitably secure the cables to the shelf or backboard.
*The DS3 must be enabled by using the craft port. See Sections 5 and 6.