Comxion E3FOM User manual

E3FOM
User’s Manual

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Table of Contents
CHAPTER 1 INTRODUCTION..........................................................................................1
1-1 FUNCTIONAL DESCRIPTION .............................................................................................1
1-2 APPLICATIONS OF E3FOM ..............................................................................................2
1-3 E3FOM TECHNICAL SPECIFICATIONS .............................................................................3
1-4 E3FOM ORDERING INFORMATION ..................................................................................6
CHAPTER 2 INSTALLATION GUIDE .............................................................................7
2-1 DESCRIPTION ..................................................................................................................7
2-2 UNPACKING.....................................................................................................................7
2-3 SITE REQUIREMENTS.......................................................................................................7
2-4 SITE SELECTION ..............................................................................................................8
2-5 AC OR DC ELECTRICAL OUTLET CONNECTION ..............................................................8
CHAPTER 3 OPERATING INSTRUCTIONS ..................................................................9
3-1 PANEL DESCRIPTION .......................................................................................................9
3-2 FRONT PANEL CONTROL AND LED INDICATOR FUNCTIONS...........................................10
3-3 MENU TREE ..................................................................................................................12
CHAPTER 4 OPERATINGAND SETUPINSTRUCTIONS.........................................14
4-1 PROFILE ........................................................................................................................14
4-2 SYSTEM CONFIGURATION..............................................................................................15
4-3 LOOPBACK TEST FUNCTION ..........................................................................................15
4-4 OPTICAL MODULE MANUAL SWITCH ............................................................................15
4-5 PERFORMANCE MONITORING FUNCTION.......................................................................15
4-6 NETWORK MANAGEMENT FUNCTION............................................................................17
4-7 CRAFT PORT OPERATION ...............................................................................................21
4-8 CONNECT AND SETUP THE CRAFT PORT ........................................................................21
4-9 OPERATING FROM THE CRAFT PORT..............................................................................21
CHAPTER 5 DIAGNOSTICS AND LOOPBACK FUNCTIONS..................................36
5-1 GENERAL INFORMATION................................................................................................36
5-2 LOOPBACK FUNCTIONS .................................................................................................36

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Chapter 1 Introduction
1-1 Functional Description
Comxion E3FOM is a high-speed fiber optics modem that converts E3 signal into an
optical data stream. It extends the transmission distance up to 80 kilometers. With the
optional secondary optical link, E3FOM provides 1+1 optical line protection. In addition,
the E3FOM also provides the standard SNMP interface for Network Management, using
Ethernet and PPP ports to connect to the central office. Users can monitor and configure
the E3FOM through in-band operation channel to reach a remote terminal. Moreover,
E3FOM simplifies testing and maintenance with order wire, allowing voice communication
between local and remote maintenance crews.
Transparent E3 signal between electrical and optical link
1+1 auto-protection switch for optical link
1310/1550 nm optical MLM mode laser for customer applications
16 – 52 dB optical system gain
SNMP agent for local/remote unit management and performance monitoring that
included E3 and optical links
Provides BPV error count for E3 interface performance monitoring
Provides performance monitoring for optical interface
LAN and PPP ports are provided for SNMP management.
Embedded Operation Channel (EOC) for remote unit performance monitoring and
configuration
Provides local/remote loopback and request for remote loopback for diagnostics
Compliant with ITU-T G.703 E3 electrical interface
Compliant with ITU-T G.823 E3 jitter tolerance
Compliant with ITU-T G.751 E3 jitter transfer
Order wire (OW) channel is available for end-to-end installation and maintenance.
Easy installation and status monitoring through LCD panel and keypad or VT-100
terminal
ELOS/AIS/RDI LED indicators for E3 electrical link
OLOS/AIS/RDI LED indicators for optical link
Central office visible/audible alarm relay
Stand-alone or 19” / 23” rack-mounted
Redundant power supply with DC/AC options
Compliant with ITU-T G.652 single mode fiber transmission medium

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1-2 Applications of E3FOM
E3FOM is mainly used to extend the transmission distance of E3 signal, connecting
different Local Area Networks (LAN), by converting E3 signal into an optical data stream.
As illustrated below, there are two main applications for the use of E3FOM:
¾Application 1: E3FOM converts the E3 signal into an optical data stream to extend the
transmission distance.
¾Application 2: E3FOM can connect a router with HSSI interface to a remote Central
Office.
E3FOM
SL-FE340
E3
HSSI
34Mbps
10M
SNMP
Agent
EMS
Optical
Link
CO. Side Remote Side
OW
OW
SDH/DACS
Network
Optical
Link
SL-FE340
E3
HSSI
34Mbps
10M
SNMP
Agent
EMS
Optical
Link
CO. Side Remote Side
OW
OW
SDH/DACS
Network
Optical
Link

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1-3 E3FOM Technical Specifications
E3 Interface
¾Channel Capacity: 1 channel
¾Bit Rate: 34.368Mbps +/- 20ppm
¾Line Code: HDB3
¾Impedance: Unbalanced 75Ω
¾Electrical Interface: Compliant with ITU-T G.703
¾Jitter Tolerance: Compliant with international standards ITU-T G.823
¾Jitter Transfer: Compliant with international standards ITU-T G.751
HSSI Interface (Optional)
¾Data Rate: 34 Mbps (clear channel)
¾Electrical: MC10KH series ECL
¾Physical: 50 pin SCSI-2 socket
Optical Link
¾Wavelength: 1310 or 1550 nm MLM Laser diode
¾Number of Optical Link：2 (working and protection link)
¾Output Power: ＞-15 dBm at 9/125 (1310 nm Laser)
＞-5 dBm at 9/125(1550 nm Laser)
¾Receive Sensitivity: -34 dBm (1310 nm Laser) or
-35 dBm (1550 nm Laser)
¾System Gain: > 19 dB
¾Fiber type: Single Mode (9/125um)
¾Connectors: FC/PC or ST
Alarm Detection and Indication
zE3 Signal Interface
¾ELOS (Electric Loss of Signal): The loss of E3 signal
¾AIS (Alarm Indication Signal): Receiving alarm signal indicator
¾RDI (Remote Defect Indication): Remote alarm

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zOptical Interface
¾OLOS (Optical Loss of Signal): The loss of optics signal
¾AIS (Alarm Indication Signal): Receiving alarm signal indicator
¾LCK (Lock): Disables auto protection switch
¾RDI (Remote Defect Indication): Remote alarm
¾LSR: Laser On indicator
zSystem Interface
¾SYS: System power module and control module failure detection
¾Alarm Connector: DB-9 female connector to an external BUZZER for
audible alarm.
¾RNG: Indicator that will light up when the “Call” button is pressed or
when connected to another unit via order wire.
Diagnostic capabilities
¾Loopback: Local Loopback, and Remote Loopback, Request Remote
Loopback
¾ACO: Cutting off the audible alarm (to external buzzer) will still keep
the visible ACO light on. Disabling the audible alarm does not mean
the problem has been solved.
¾RST: Reset the system
Configuration
¾Use the three control buttons and the LCD front panel to configure and monitor
the system
¾Craft port:
¾Bits per second (baud): 9600bps
¾Parity: None
¾Data Bits: 8 bits
¾Stop Bit: 1
(VT-100 or Emulation Terminal)
Power
¾DC: -36V ~ -72V
¾AC: 90V ~ 264V (57Hz ~ 63Hz)

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System Mechanical
¾E3FOM Dimensions:
Depth: 220 mm
Width: 285 mm
Height: 44.5 mm
¾Connectors: E3: BNC female connector
HSSI: 50 pin SCSI-2 socket
Order Wire: Phone jack
SNMP: Two RJ-45 for LAN and PPP ports
Office Alarm: D-type 9 pin female connector
Environmental Conditions
¾Operating Temperature: 0 ~ 45℃Indoor Application
0 ~ 60℃Outdoor Application
-25 ~ 70℃Storage
¾Relative Humidity: 5 ~ 95% without condensation
¾EMI (Electromagnetic Interference): The Modem complies with specifications
of class A of 22 of the CISPR (International Special Committee on Radio
Interference of the International Electrotechnical Commission) or class A
of Subpart B of Part 15 of the FCC (Federal Communications
Commission) Rules of U.S.A.
¾EMS: Compliant with EN55082-2 standards
¾Safety: Compliant with EN60950 standards

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1-4 E3FOM Ordering Information
Classification Item
Single Optical LinkOptical Link Type
Dual Optical Link (1+1 auto protection)
1310nm Multi-Mode Laser Module
1310nm Single-Mode Laser Module, 30Km
1310nm Single-Mode Laser Module, 50Km
1310nm Single-Mode Laser Module, 70Km
1550nm Single-Mode DFB Laser Module, 80Km
1310nm Single-Mode Laser Module, 90Km
Laser Module Type
1550nm Single-Mode DFB Laser Module, 100Km
FC/PC Type Laser Module Connector
SC Type Laser Module Connector
Laser Module
Connector Type
ST Type Laser Module Connector
Single AC Power Module
Dual AC power Module
Single DC Power Module
Dual DC Power Module
Power Module Type
One AC and One DC Power Module
USA (1.8 M)
Europe
England
Power Cord
Australia

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Chapter 2 Installation Guide
2-1 Description
This chapter provides the information needed to install E3FOM. It is important to
follow the installation instructions to ensure normal operation of the system and to prevent
damages due to human error.
2-2 Unpacking
If there is a possibility for future relocation of the E3FOM unit, please save the cartons
and the protective packaging material. The following items are shipped with your
E3FOM:
zOne E3FOM User’s Manual
zOne E3FOM Unit
zRJ45-to-DB9 connector
Please carefully unpack and inspect the unit and accessories for potentially damaged
and missing parts. Contact our nearest sales representative or our company directly if you
suspect any damaged or missing parts. Improper handling during shipment may cause early
failure.
2-3 Site Requirements
The F.C.C. requires telecommunication equipment to withstand electrical surge that
may result from lighting strikes. This equipment has been tested and found to comply with
the F.C.C. requirement. Users should follow the precautions below to insure the safety and
minimize the risk of damage to the equipment:
zMake sure that the power outlet is properly grounded.
zProper grounding should include a minimum of:
1) A grounded rod buried outside the building at least 8 feet (2.44 meters) deep.
2) It is preferred that the building uses metal water pipe and cooper connector at the
joint.
3) Any device either connected to E3FOM directly or indirectly, should use the same
set of power outlet.

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2-4 Site Selection
For best performance, install the E3FOM within 50 feet (15.24 meters) from the data
terminal equipment and 6 feet (1.83 meters) from the AC power outlet. To allow easy
access to the equipment, leave at least 36 inches (90 cm) clearance in the front and at least 4
inches (10.2 cm) at the rear.
To avoid overheating, leave at least 1 inch (2.5 cm) on either side of E3FOM. Also,
do not stack another equipment on top of E3FOM.
2-5 AC or DC Electrical Outlet Connection
For safety and to prevent damages to E3FOM, make sure that the power requirement
matches those of your electric outlets. Connect power to E3FOM and power on the
equipment.

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Chapter 3 Operating Instructions
3-1 Panel Description
E3FOM consists of the front panel and the rear panel. There are four parts to the front
panel of E3FOM:
(1) Fiber Optics Connectors and Indicators:
▪Include two sets of optics transmit/receive connectors and indicators (1+1 auto
switch protection).
▪Notify users of a problem such as OLOS (Optical Loss of Signal), ELOS (Electric
Loss of Signal), AIS (Alarm Indication Signal) or LSR (Laser LED).
(2) Alarm LED Display: Notifies users of a problem such as MAJ (Major Alarm), MIN
(Minor Alarm), RDI (Remote Defect Indicator), ACO(Alarm Cut Off), RNG (Ringer),
LCK (Lock), or SYS (System Alarm).
(3) LCD Control Buttons: The three buttons, ▲, ▼, and are used for system
configuration and for the loopback test.
(4) Order Wire: Users can connect E3FOM to a headset and microphone for remote
configuration and testing.
Each of the LED indicators is described below in detail:
Front panel
Fiber Optics Connector
(Working and Protect) LCD Control Buttons
LED
Order Wire
E3FOM

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3-2 Front Panel Control and LED Indicator Functions
# Control or LED
Indicators Functions
1 OLOS1
OLOS2
LSR1
LSR2
Red light when there is a loss of input signal.
Yellow light when Laser module is sending out energy normally.
2 ELOS/AIS Red light when there is an Electric Loss of Signal (ELOS) of E3 signal.
Yellow light when received an Alarm Indication Signal (AIS) of E3
signal.
3 MAJ Red light when there is a Major Alarm present
4 MIN Yellow light when there is a Minor Alarm present
5 RNG Red light when E3FOM is connecting to a remote terminal or when
connected to the remote terminal.
6 SYS Yellow light when system power or control module fails
7 RDI Remote Defect Indication;
Yellow light when there is a failure in the remote side
8 LCK Yellow light when system is locked, if switched to protect line 6 times
within 10 minutes
9 ACO Alarm Cut Off; Yellow light when the ACO button is pressed to
manually disable the audible alarm when a problem occurs.
If any newer alarm is reported after the ACO button has been pressed,
the external alarm will activate again.
10 CAL Activate/deactivate the order wire
11 RST Restart the system
12 ▼
▲
Three control and configuring buttons for E3FOM

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Rear Panel
E3 Signal Connector: BNC connector for input/output of E3 signal
I. Alarm: DB9 female connector; Connect to an external BUZZER to receive visible and
audible alarm.
II. Terminal Connector: a. LAN, RJ-45 connector to SNMP management system
b. PPP, RJ-45 (with DB9 converter) connector to a remote terminal
using dial-up modem
III. Power Switches: On/Off switch for E3FOM
IV. There are 5 different power supply combinations with the DC/AC dual module power
supple: AC only. DC only, dual AC, dual DC, AC/DC redundancy. (Refer to Order
Information)
BNC
電源開關
AC & DC電源插座
LAN RS232/PPP
終端接口 RJ45
BNC LAN PPP /Craft port Dual power
AC/DC
Alarm Power switch

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3-3 Menu Tree
E3FOM

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Chapter 4 Operating and Setup Instructions
E3FOM provides LCD control for easy configuration, maintenance, and testing.
Button functions are as follows:
Menu select
▲Go back to the upper level of the menu
▼“Enter” key to go to a sub-menu
4-1 Profile
Download and Save Profiles:
If the user selects the factory default profile, the system will restart before downloading the
factory default profile.
Users can configure an E3 Line Code and Loopback test. After selecting the “user_ defined”
option, the system will automatically restart. The system will then download the
user_defined profile.
Modify Password:
To prevent unauthorized login, user must enter a set of password to login to the system.
The password for E3FOM is a combination of the buttons below, from left to right:
Button Up ↑Right →DownÈUp ↑
Password U R D U
Users can change the password using this function after verifying the current password.
Password can also be changed from the craft terminal using the same procedure. Note that
the password for operating the craft can be different from LCD menu driven is needed.
Note: In case the user forgets the login password, the universal password for E3FOM
“URDU” can be used.

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4-2 System Configuration
zThe LBO of E3 signal cannot be configured on E3FOM. ( for T3FOM only)
zThe E3FOM can be configured as framed or un-framed in order to identify the LOS
alarm.
4-3 Loopback Test Function
There are three types of loopback tests for E3FOM: Local Loopback, Remote
Loopback, and Request Remote Loopback.
Note: Refer to Chapter 5 for detailed information on Diagnostics and Loopback
Functions.
4-4 Optical Module Manual Switch
Users can manually switch between OE module 1 and OE module 2 if a secondary OE
module is installed on the E3FOM.
O/E Module status can be obtained from this current menu:
zUnder normal operation, LCD display shows that the working O/E Module as
“Working” and the backup O/E Module as ”Standby.”
zIf E3FOM detects a Loss of Signal, the LOS light will be lit and the LCD display will
show that there is a Loss of Signal.
4-5 Performance Monitoring Function
The Performance Monitoring Function of E3FOM includes calculating errors in Path
and Line, providing performance monitoring parameters, and setting threshold value. To
access the performance monitoring function, select option 5: PM Status Report.
E3FOM has the following performance monitoring functions:
zParameter:
* Near End Electrical:
LineCodeViolation(LineCV)
Line Errored Second (Line ES)
Path Severely Errored Second (Path SES)
Path Unavailable Second (Path UAS)

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* Far End Electrical:
LineCodeViolation(LineCV)
Line Errored Second (Line ES)
Path Severely Errored Second (Path SES)
Path Unavailable Second (Path UAS)
* Near End Optical:
CodeViolation(CV)
Errored Second (ES)
Severely Errored Second (SES)
Unavailable Second (UAS)
* Far End Optical:
CodeViolation(CV)
Errored Second (ES)
Severely Errored Second (SES)
Unavailable Second (UAS)
zStoring System Parameters
E3FOM contains at least 2 Megabytes of SDRAM, enough for collecting system
parameters at a 15-minute interval, 24 hours a day for 7 days. E3FOM can store
different types of system parameters, including the CV, ES, SES, UAS values for local and
remote optics and electric signals.
zThreshold Setting
To set the E3 threshold values for CV, ES, SES, and UAS, select option 6: PM Threshold
Setting.