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CPE08 Series
Ethernet to E1 Converter (ITU-T G.8040)
User Manual
CPE08 Series User Manual
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Foreword
Thank you for purchasing our products. Please read this manual carefully before using the product. Always observe
standard safety precautions during installation, operation and maintenance of this product.
Notice
THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE
SUBJECT TO CHANGE WITHOUT PRIOR NOTICE. ALL STATEMENTS, INFORMATION, AND
RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED
WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL
RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.
Every effort has been made to ensure that the information in this manual is accurate, comprehensive, clear and
up-to-date. However, there may be changes in some part of document, therefor customer can contact our
technical support to obtain the latest update.
History of Revisions
Date Version Remark
July, 2014 V1.1 Renewal
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Contents
Foreword ........................................................................................................................................................................ 2
Chapter 1 Product Description................................................................................................................................... 5
1.1 General Overview ........................................................................................................................................... 5
1.2 Part Number ................................................................................................................................................... 5
1.3 Main Features................................................................................................................................................. 6
1.4 Power Supply and Dimension ...................................................................................................................... 6
Chapter 2 Equipment Interfaces ................................................................................................................................ 7
2.1 E1 Interface .................................................................................................................................................... 7
2.2 10/100BASE-TX Fast Ethernet Interface .................................................................................................... 7
2.3 100BASE-FX Fast Ethernet over Fiber Optic Interface ............................................................................. 7
2.4 Management Interface .................................................................................................................................. 7
2.4.1 SNMP Interface ....................................................................................................................................... 7
2.4.2 CONSOLE (RS232) Interface ................................................................................................................ 8
2.5 Front Panel ..................................................................................................................................................... 8
2.5.1 CPE04/CPE08/CPE16 120Ohm Balanced Front Panel.................................................................... 8
2.5.2 Front Panel LED Indicator .................................................................................................................... 8
2.6 Rear Panel ...................................................................................................................................................... 9
2.6.1 CPE04/CPE08/CPE16 120Ohm Balanced Rear Panel ..................................................................... 9
Chapter 3 Equipment Working Principles ............................................................................................................... 10
Chapter 4 Installation ................................................................................................................................................ 11
4.1 Package Content .......................................................................................................................................... 11
4.2 Mechanical Installation............................................................................................................................... 11
4.2.1 Site Selection ........................................................................................................................................ 11
4.2.2 Equipment Unpacking ......................................................................................................................... 11
4.2.3 Equipment Installation ........................................................................................................................ 12
4.3 Power On ...................................................................................................................................................... 12
Chapter 5 Maintenance and Troubleshooting ........................................................................................................ 14
6.1 Maintenance ................................................................................................................................................. 14
6.2 Troubleshooting ........................................................................................................................................... 14
6.2.1 Troubleshooting Flow .......................................................................................................................... 15
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6.2.2 General Troubleshooting .................................................................................................................... 15
6.2.3 Alarm Troubleshooting........................................................................................................................ 16
Appendix A Management Cable RJ-45 to DB-9 Female Adapter ........................................................................... 18
Appendix B E1 Cable and Connector ....................................................................................................................... 19
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Chapter 1 Product Description
1.1 General Overview
CPE08 series is a converter for interconnecting Fast Ethernet (FE) with E1 which is based on Ethernet-over-PDH (EoPDH)
technique, a new breed of products integrating advanced Ethernet bridging with fully channelized TDM capabilities.
CPE08 series, are inverse multiplexer for providing Ethernet services bonded over multiple E1s (4/8/16 E1s), breaking the
bandwidth restriction of single E1. The CPE08 series will help carriers and enterprises to make full use of the traditional
TDM network in this TCP/IP Era, utilize legacy E1 resources in the public network to build broadband Ethernet data
network rapidly.
The CPE08 series Interface Converter is an Ethernet extension device utilizing TDM telecom infrastructure (the telecom
network of E1s/PDH/SDH carrying E1s). It converts the Ethernet data into E1 frame format for transmission over the
existing TDM (E1) links and then re-converts the E1 back into Ethernet data at far-end terminal, to bridge two Ethernet
LANs over the existing E1-based telecom network. The device can effectively utilize the redundant bandwidth of telecom
operators’ existing TDM network to transport Ethernet data with low investment.
CPE08 series comply with ITU-T G.8040 standard – to encapsulate and map Ethernet packets into PDH timeslots. The
equipment provides 4×10/100BASE-TX Fast Ethernet interfaces. CPE08 series can interoperate with the third party
devices with the same standard, can be flexibly configured and easily maintained, also provide complete network
management functions.
1.2 Part Number
Standalone Unit
Part No E1 Interface 10/100BASE-TX Management
Interface Structure
CPE04 4 4 SNMP, Console 19”×1U
CPE08 8 4 SNMP, Console 19”×1U
CPE16 16 4 SNMP, Console 19”×1U
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1.3 Main Features
Adopt large-scale chips for simple circuit, low power consumption and high reliability.
Provide 4/8/16 × E1 interface with 120ohm balanced optional.
Provide up to 4×10/100BASE-TX ports with L2 local switching.
Comply with ITU-T G.8040 standard- mapping GFP into PDH load.
Support 802.1q VLAN tagging.
Support QoS (Quality of Service) port-based priority and 802.1p CoS priority.
Support auto negotiation, MDI/MDI-X auto-sense, 10M/100M, full/half duplex.
IEEE802.3x flow control for pause frame.
Selectable data rate based on ports.
Offer maximum frame length 1552 bytes transmission unit.
Support VCAT function based on ITU G.7043; auto-adaptation the maximum 240ms time delay difference.
Suppress broadcast storm.
Offer full-scale data rates n×2M without any packet loss.
Support traffic load balance and auto fault-recovery functions on E1 link.
Provide E1 facility loopback.
Provide SNMP and Console management interface.
Support remote management and online remote update software.
Optional AC 220V or DC -48V power supply.
1.4 Power Supply and Dimension
DC Power Supply -48V DC with range: -36V ~ -72V
Power Supply Ripple ≤240mVp-p
AC Power Supply 220V AC ± 20%, 50Hz
Power Consumption ≤10W
1U×19” Dimension (W×D×H) 483×175×45 mm
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Chapter 2 Equipment Interfaces
2.1 E1 Interface
Standard: ITU-T G.703
Line Rate: 2048kbps ± 50ppm
Line Code: HDB3
Framing: unframed
Line Impedance: 75ohm unbalanced or 120ohm balanced optional
Electrical Characteristic: comply with ITU-T G.703 recommendation
Jitter Performance: comply with ITU-T G.823 recommendation
Electrical Level: ±2.37V±10% or ±3.00V±10%
Connector: BNC (75Ω unbalanced) or RJ-45 (120Ω balanced)
2.2 10/100BASE-TX Fast Ethernet Interface
Interface: 10/100BASE-TX
Interface protocol: compliant with IEEE 802.3u, IEEE 802.1q, IEEE 802.3x
Data rate: 10/100Mbps auto-negotiation or force mode
Duplex mode: full duplex, half duplex
Interface line sequence: MDI/MDI-X auto-sense
Range 100 meters/328 feet on UTP category 5 or 6 cable
Connector: RJ-45 electrical interface
2.3 100BASE-FX Fast Ethernet over Fiber Optic Interface
Interface: 100BASE-FX
Interface protocol: compliant with IEEE802.3u, IEEE 802.1q, IEEE 802.3x
Data rate: 100Mbps
Transmission optical power: -3dBm ~ -8dBm
Receiving sensitivity: -33dBm ~ -40dBm
4B5B encoding and NRZI line code
Applicable fiber: single-mode, multi-mode
Connector: FC/SC
2.4 Management Interface
2.4.1 SNMP Interface
Interface: 10/100BASE-T Ethernet
Comply with IEEE802.3 standard
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Connector: RJ-45
2.4.2 CONSOLE (RS232) Interface
Interface: RS-232 serial port
Baud rate: 57600bps
Connector: RJ-45
2.5 Front Panel
2.5.1 CPE04/CPE08/CPE16 120Ohm Balanced Front Panel
CPE04SNMP
CONSOLE LAN1
S
L
STA
RUN
S
L
S
L
S
L
S
L
LAN2
LAN3
LAN4 E1P2
E1P1 E1P3
A
W
A
W
A
W
A
W
E1P4
CPE08SNMP
CONSOLE LAN1
S
L
STA
RUN
S
L
S
L
S
L
S
L
LAN2
LAN3
LAN4 E1P2
E1P1 E1P3
A
W
A
W
A
W
A
W
A
W
A
W
E1P4
E1P5
E1P6
A
W
A
W E1P7
E1P8
CPE16SNMP
CONSOLE LAN1
S
L
STA
RUN
S
L
S
L
S
L
S
L
LAN2
LAN3
LAN4 E1P2
E1P1 E1P3
A
W
A
W
A
W
A
W
A
W
A
W
E1P4
E1P5
E1P6
A
W
A
W E1P7
E1P8 E1P10
E1P9 E1P11
A
W
A
W
A
W
A
W
A
W
A
W
E1P12
E1P13
E1P14
A
W
A
W E1P15
E1P16
Figure 2-1 CPE04/CPE08/CPE16 120Ω Balanced Front Panel
As shown in Figure 2-1, CPE04/CPE08/CPE16 120Ohm balanced’s front panel provides uplink interface, service interface
and network management interface, the interface from left to right in the following order:
1) SNMP management interface: with Ethernet interface and using RJ45 connector
2) CONSOLE management interface: RS232 serial port using RJ45 connector
3) Ethernet service interface: 4×10/100BASE-TX interface (LAN1~LAN4) using RJ45 connector
4) E1 uplink interface: 4/8/16×E1 120Ω balanced interface using RJ45 connector
2.5.2 Front Panel LED Indicator
CPE08 series provides a complete series LED indicators, for rapid fault-diagnosis and provide comprehensive information.
Through front panel, user can examine working state and current alarm, and the information of the equipment.
Table 2-2 Front Panel LED Indicator
Indicator Color State On State Off State Flashing
RUN Green System is not working
properly
System doesn’t work System is working
properly
STA Yellow Minor alarm detected on
the system
No alarm in the system STA and RUN blinking
by turns at 1Hz
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frequency: system is
wrong or unsuccessful
initialization.
STA and RUN blinking in
the same time means there
is any E1 loopback
W (WORK) Green E1 is connected No connection Blinking along with RUN
flashing when there are
any loopbacks for E1 or
any bit errors at local site.
A (AIS) Yellow There are AIS alarms on
E1 or there are bit errors
at local site.
Operating Blinking along with RUN
flashing when there is any
loss of frame or loopback
on E1 at local site.
Inversed blinking with
RUN flashing when there
is any loss of frame at
remote site.
S (SPEED) Green 100Mbps 10Mbps NA
L (L/A) Green Link is present. Indicates
that a link is established
with a link partner.
Link down or no
connection
Traffic is present
F (FULL) Green Optical port is in full
duplex mode
Optical port is in half
duplex mode
NA
L (L/A) Green Link is present in optical
port
Link down or no optical
connection
Traffic is present
2.6 Rear Panel
2.6.1 CPE04/CPE08/CPE16 120Ohm Balanced Rear Panel
POWER
ON OFF
+Vin -Vin
DC POWER
Figure 2-2 CPE04/CPE08/CPE16 120Ω Balanced with AC/DC Power Supply Rear Panel
As shown in Figure 2-5, CPE04/CPE08/CPE16 120Ohm balanced rear panel provides AC or DC power supply interface.
AC power supply adopts C14 panel mounted male connector (inlet).
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Chapter 3 Equipment Working Principles
4~16 E1s is bounded into one broadband channel and Ethernet data is transmitted over those channels via special-purpose
integrated chipsets, so as to leverage the legacy E1 transmission channel for broadband transmission of data. The
equipment can be managed through SNMP or CONSOLE interface to meet user’s different requirements and demands for
the network.
SDRAM & Controller
Management SystemConsole SNMP
10
0B
AS
E-T
X1
00
BA
SE
-TX
10
0B
AS
E-T
X1
00B
AS
E-T
X1
00
BA
SE
-FX
Ethernet Switch
Eth
ern
et R
ece
ive
Bu
ffer &
Co
ntro
ller
Eth
ern
et T
ran
sm
it
Bu
ffer &
Co
ntro
ller
Framer
Deframer
Framer
Deframer
Framer
Deframer
Framer
Deframer
HDB3
Codec
HDB3
Codec
HDB3
Codec
HDB3
Codec
U-G
FP
D-G
FP
VC
AT
& L
CA
S
LO
OP
CO
NT
RO
LL
ER
RS232 Ethernet
E1_1
E1_2
E1_3
E1_n
LAN1
LAN2
LAN3
LAN4
Optical
Eth
Figure 3-1 Block Diagram of Working Principle
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Chapter 4 Installation
4.1 Package Content
Check the contents of the box against the packing checklist. Verify that you received all listed equipment, check the model
and the number of the device and spare parts, including the following:
1 (one) unit CPE08
1 (one) unit AC/DC power cord or adapter plug (depend on your order)
1 (one) user manual
Optional equipment that you ordered, such as network interface cables or special connectors
4.2 Mechanical Installation
4.2.1 Site Selection
Environmental factors can adversely affect the performance and life span of your equipment. Equipment requires a dry,
clean, well-ventilated, and air-conditioned environment.
The installation site should provide proper room with entrance cable routing. For stability and safety, it is always best to
place the heavier equipment below lighter equipment in racks.
4.2.2 Equipment Unpacking
Equipment use a special carton packaging, with anti-shock protection, each box placed a piece of equipment, including the
appropriate accessories, please inspect and check whether it consistent with the packing list.
Step 1. After you have specified the installation location for the equipment, clear up the place and move the
cartons with equipment packed inside close to the installation location;
Step 2. Pay attention to the direction of the package to ensure that the front side is upward;
Step 3. Unpack the cartons and pick out the equipment and accessories.
Step 4. Do not discard the shipping cartons and poly bag when you unpack the equipment. Flatten and store them.
You will need the containers if you need to move or ship the equipment in the future.
The equipment is built-in with sensitive devices. Therefore please handle with care and try to avoid severe
vibration..
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4.2.3 Equipment Installation
4.2.3.1 Installing the Equipment on a Desktop
You can install the equipment on a desktop, table, or other flat surface, follow these steps:
Step 1. Place the unit upside-down on the flat surface. Please choose a sturdy table to make sure the equipment is
safe.
Step 2. Place the power supply unit on a desktop near an AC power source. Do not stack the power supply on the
equipment. We recommend you to place the equipment near an electrical power outlet.
Step 3. A dedicated chassis grounding stud is located in the left side of the rear panel. There is “ ” symbol,
connect the grounding lug properly.
Step 4. The equipment has an excellent thermal design for heat transfer and use of natural cooling mode. The
device must be ventilated, or the installation must allow unrestricted airflow for cooling. Overheating can
cause permanent damage to the unit.
Step 5. Do not place heavy objects on top of equipment.
4.2.3.2 Installing the Equipment in a Rack
Rack-mounting the equipment should follow some steps:
Step 1. Ensure the installation of equipment in a 19"/23" standard rack (compliant with ETS 300119 or IEC
60297). A standard rack-mount kit is included for mounting the equipment in a standard 19-inch (48.3 cm)
equipment rack with two unobstructed outer posts, with a nominal depth (between the front and rear
mounting posts) of 19.25 inches (48.9 cm) and a maximum depth of 32 inches (81.3 cm).
Step 2. The equipment has a built-in L bracket, you will need to prepare the screwdriver to install the chassis in a
rack.
Step 3. Insert the rear of the chassis between the mounting posts.
Step 4. Align the mounting holes in the L bracket with the mounting holes in the equipment rack.
Step 5. Secure the chassis using two 12-24 x 3/4-inch screws per side through the elongated holes in the L
bracket and into the threaded holes in the mounting post.
Step 6. Make sure that the equipment is installed securely. Tighten any loose captive installation screws.
Step 7. The equipment has an excellent thermal design, chassis from steel with excellent heat transfer, use of
natural cooling mode. The device, under the guarantee must be ventilated, or at least stay out of 1U
(4.5cm) of space for heat dissipation, do not place heavy objects on top of equipment.
Step 8. The chassis is automatically grounded when install the equipment into a rack. However, for extra
grounding protection, a dedicated chassis grounding stud is located in the left side of the rear panel. There
is " " symbol, please connect the grounding lug properly.
4.3 Power On
Step 1. After installing the equipment to a designated location, choose the proper power supply either AC power
or DC power will be used, depending on the model ordered.
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Step 2. If equipment adopts DC power supply, use appropriate power wire, with red/blue wire connected with -
48V (low level voltage cable), black wire connected with 0V (GND) (high level voltage cable). Make
sure of firm installation and no short-circuit.
Step 3. If equipment adopts AC power supply, you should use standard power cable. Plug the power cord into a
power receptacle of CPE08 power module and the other end to your power outlets. Power cable uses
power cord with a CEE 7/7 plug (European wall socket) at the left end, and an IEC C13 at the right end,
as shown in Figure4-1.
Step 4. Make sure that the power source for -48V DC or 220V AC is normal.
Step 5. Set the power switch to the | (On) position. The green Power LED on the power supply lights, indicating
that the power supply is supplying power to the chassis. The Run LED indicator flashes indicating that
the device is working properly.
Figure 4-1 AC Power Cable
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Chapter 5 Maintenance and Troubleshooting
The maintenance work can be separated into two categories: regular maintenance and troubleshooting. Regular
maintenance is important to ensure that the used equipment stays in good shape. Every system and equipment requires
constant checks to make sure that they are working properly. Failure to check and conduct regular maintenance will cause
complications and may inflict huge losses. This guide also gives general troubleshooting instructions and alarm
troubleshooting instructions that apply to the CPE08 equipment.
6.1 Maintenance
Maintenance generally refers to communication system maintenance. It’s not only limited to this equipment, but also
includes lines/cables, external supporting equipment and site environment. Proper use of preventive maintenance
procedures can keep the CPE08 series equipment in top operating condition and minimize the need for costly, time-
consuming service procedures.
Site Maintenance
Maintenance procedures that you should perform regularly are maintaining your site environment.
Using the LEDs for Maintenance
User mainly obtains alarm information from alarm LED indicators, so user should pay attention to light or
blinking status during daily maintenance. From this aspect, user can examine on whether equipment works
properly or not.
Check on Equipment Alarm through EMS
Network management system can monitor real time performance without terminating traffic. It can also monitor
faults, judge fault type and find fault location. Therefore, it’s an effective tool for preventive maintenance and
fault processing.
There is not necessary for daily adjustment and test for the equipment. Many maintenance rules for analog
equipment do not apply to digital equipment. This equipment only needs regular precautionary monitoring,
instead of precautionary debugging. Do not check equipment if no obvious serious fault occurs in the network to
avoid human error.
6.2 Troubleshooting
Troubleshooting is the identification or diagnosis of "trouble" in the system caused by a failure of some kind. The problem
is initially described as symptoms of malfunction, and troubleshooting is the process of determining the causes of these
symptoms so that it can be solved.
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6.2.1 Troubleshooting Flow
Troubleshooting is a form of problem solving most often applied to repair the failed products or processes. It is a logical,
systematic search for the source of a problem so that it can be solved, and so the product or process can be made
operational again. If you are experiencing trouble with CPE08 equipment, please complete the steps outlined in the
following flow diagram.
Observing the LED indicators
Checking alarm through EMS
Analyze alarm cause
Locating alarm location
Determining troubleshooting method
Perform action or troubleshooting
Clearance
Fault and alarm occur
Figure 5-1 Troubleshooting Flow
6.2.2 General Troubleshooting
This section provides brief procedures for troubleshooting the most common problems encountered when operating
CPE08 series.
Table 5-1 Frequent Problem and Solution
Problem Cause Solution
Abnormal power supply Power is switched off Turn on the power switch button
Loss of power or low voltage The CPE08 requires a constant source of power
to properly function. Input DC power is -48 VDC or input AC power is 220 VAC.
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If LEDs are not illuminated on the AC
power supply, there is no input power or
the power cord is not fully seated or socket
loose
Reseat and tighten it. If the power cord is fully
seated, check the input power.
If LEDs are not illuminated on the DC
power supply, many times the problem is
reversed polarity.
Check the DC input power supply to see if the
positive and negative lead wires are swapped.
Failure of E1 link The impedance for E1 interface is not
matched
Verify the impedance configuration of the
device
Wrong E1connection Make a correction, verify the input and output
cable
Far-end device is not working properly Ensure that the far-end device can operate
properly
Clock configuration In some case, you may select the force mode
with Internal clock
Failure of Ethernet
interface and PC
connectivity
troubleshooting
Ethernet cable is not meet the standard, or
defect
Replace with the standard cable, the cable
coloring pinout (line order) should meet the
standard
Connection with the other equipment
failure
Confirm that the far-end equipment which the
Ethernet cable connected is working normally
Mismatch speed mode Ensure both side equipments use the same
mode, either auto-negotiation or forced mode
The IP address was typed incorrectly Verify that the IP address used to ping the PC
The IP configuration of your PC is not
properly set
Fix the IP configuration, including the IP
address and subnet mask
PC firewall and antivirus software may be
interfering with the operation.
Turn off PC firewall or disable antivirus
6.2.3 Alarm Troubleshooting
This sub section gives CPE08 alarm descriptions and troubleshooting procedures.
Table 5-2 Alarm Troubleshooting
Alarm Index Causes/Descriptions Solution
E1 Channel has AIS alarm Indicates that E1 link problem,
possible causes in the connector, cable,
pinout, DDF rack. There is also
possibility cross conection
Check cross-connection in access network,
check the E1 link.
Note: When alarm events or failure appear, follow the instructions promptly to determine the causes of alarm, if
necessary, please contact us for technical support.
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configuration in access network (third
party device).
E1 Channel has MFI alarm Indicates the CPE08 is not connected
to EA2500, it connect to other far-end
equipment (other manufacturer).
Check cross-connection in access network,
check the E1 link.
10/100 Port Inactive Indicates there is no connection in the
LAN port.
Connect the UTP cable, or ensure the
connector is connected properly.
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Appendix A Management Cable RJ-45 to DB-9 Female Adapter
Management Cable RJ-45 to DB-9 Female Adapter
How to Create Console Cable by Yourself
1. Preparation
DB-9 female adapter
RJ-45 plug
CAT3 or CAT5 or any other category cable
2. How to connect them
Connect 3 signal lines (RXD, TXD, GND), please see the following picture and diagram.
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
RJ-45 pinsDB-9 Female pins
TXD
RXD
GND
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Appendix B E1 Cable and Connector
E1 Cable and Connector
The E1-G.703 interface is available in either balanced or unbalanced mode. A unique port adapter supports each type.
Neither the modes nor the cables are interchangeable; you cannot configure a balanced port to support an unbalanced line,
nor can you attach an interface cable intended for a balanced port to an unbalanced port.
75 Ohm unbalance is terminated on a pair of BNC connectors, while 120 Ohm balance is terminated in an RJ-45 plug.
Unbalanced (75-ohm) coaxial cable with BNC connector at each end.
Balanced (120-ohm) cable with RJ-45 connector at each end.
Pin Assignment for 120 Ohm Balance E1 Connector
RJ-45 Pin Number Signal
1 RX+
2 RX-
3 NC
4 NC
5 NC
6 NC
7 TX+
8 TX-
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Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional information, please
visit our website or directly contact our technical support. Feedback, comments and questions are welcomed.
Thank you!
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