RTN 910 IDU Quick Installation Guide (Indoor)& RTN 910 IDU ¦T--¬ьT---+-г¬-¦-(V100R003_03)_
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Copyright Huawei Technologies Co., Ltd. 2015. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior written
consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective
holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei and the
customer. All or part of the products, services and features described in this document may not be within thepurchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information,
and recommendations in this document are provided "AS IS" without warranties, guarantees or
representations of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute a warranty of any kind, express or implied.
Huawei Technologies Co., Ltd.
Address: Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website: http://www.huawei.com
Email: [email protected]
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About This Document
Related Versions
The following table lists the product versions related to this document.
Product Name Version
OptiX RTN 905 V100R007C10
iManager U2000 V200R014C60
Intended Audience
This document is intended for:
l Network planning engineer
l Hardware installation engineer
l Installation and commissioning engineer
l Field maintenance engineer
l Data configuration engineer
l System maintenance engineer
Before reading this document, you need to be familiar with the following:
l Basics of digital microwave communication
l Basics of the OptiX RTN 905
Symbol Conventions
The symbols that may be found in this document are defined as follows.
Symbol Description
Indicates an imminently hazardous situation
which, if not avoided, will result in death or
serious injury.
OptiX RTN 905 1E/2E Radio Transmission System
IDU Hardware Description About This Document
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Symbol Description
Indicates a potentially hazardous situation
which, if not avoided, could result in death
or serious injury.
Indicates a potentially hazardous situation
which, if not avoided, may result in minor
or moderate injury.
Indicates a potentially hazardous situation
which, if not avoided, could result in
equipment damage, data loss, performance
deterioration, or unanticipated results.
NOTICE is used to address practices not
related to personal injury.
Calls attention to important information,
best practices and tips.
NOTE is used to address information not
related to personal injury, equipment
damage, and environment deterioration.
General Conventions
The general conventions that may be found in this document are defined as follows.
Convention Description
Times New Roman Normal paragraphs are in Times New Roman.
Boldface Names of files, directories, folders, and users are in
boldface. For example, log in as user root.
Italic Book titles are in italics.
Courier New Examples of information displayed on the screen are in
Courier New
.
GUI Conventions
The GUI conventions that may be found in this document are defined as follows.
Convention Description
Boldface Buttons, menus, parameters, tabs, window, and dialog titles
are in boldface. For example, click OK.
OptiX RTN 905 1E/2E Radio Transmission System
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Convention Description
> Multi-level menus are in boldfaceand separated by the ">"
signs. For example, choose File> Create> Folder.
Change History
Updates are as follows.
Updates in Issue 04 (2015-12-30) Based on Product Version V100R007C10
This document is the forth issue for V100R007C10.
Update Description
- Fixed the known bugs.
Updates in Issue 03 (2015-10-15) Based on Product Version V100R007C10
This document is the third issue for V100R007C10.
Update Description
- Fixed the known bugs.
Updates in Issue 02 (2015-04-30) Based on Product Version V100R007C10
This document is the second issue for V100R007C10.
Update Description
- Fixed the known bugs.
Updates in Issue 01 (2014-12-30) Based on Product Version V100R007C10
This document is the first issue for V100R007C10.
OptiX RTN 905 1E/2E Radio Transmission System
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Contents
About This Document.....................................................................................................................ii
1 Introduction....................................................................................................................................1
1.1 Network Application...................................................................................................................................................... 2
1.2 Components....................................................................................................................................................................4
2 Chassis............................................................................................................................................. 8
2.1 Structure..........................................................................................................................................................................9
2.2 Installation Mode............................................................................................................................................................9
2.3 Airflow............................................................................................................................................................................9
2.4 IDU Labels................................................................................................................................................................... 10
3 IDU 905 Overview.......................................................................................................................13
3.1 Equipment Photos.........................................................................................................................................................15
3.2 Quick Reference........................................................................................................................................................... 15
3.2.1 Loopback Types.........................................................................................................................................................15
3.2.2 Weight and Power Consumption............................................................................................................................... 16
3.3 Functions and Features................................................................................................................................................. 16
3.3.1 Basic Functions and Features.................................................................................................................................... 16
3.3.2 IF Functions and Features..........................................................................................................................................21
3.3.3 MPLS/PWE3 Functions............................................................................................................................................ 23
3.3.4 EthernetService Functions........................................................................................................................................26
3.4 System Architecture..................................................................................................................................................... 28
3.5 Logical Board Configuration........................................................................................................................................30
3.6 Service Signal Processing Flow................................................................................................................................... 333.6.1 Integrated IP radio..................................................................................................................................................... 33
3.6.2 SDH Microwave........................................................................................................................................................36
3.7 Front Panel....................................................................................................................................................................39
3.7.1 Front Panel Diagram..................................................................................................................................................39
3.7.2 Switches.....................................................................................................................................................................40
3.7.3 Indicators................................................................................................................................................................... 40
3.7.4 Ports...........................................................................................................................................................................47
3.8 Ethernet SFP Modules Types........................................................................................................................................59
3.9 SDH SFP Module Types...............................................................................................................................................60
3.10 Technical Specifications.............................................................................................................................................61
OptiX RTN 905 1E/2E Radio Transmission System
IDU Hardware Description Contents
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5.8.2 E1 Cable Connected to the E1 Panel.......................................................................................................................122
5.9 Orderwire Cable......................................................................................................................................................... 124
5.10 Network Cable..........................................................................................................................................................125
A Glossary......................................................................................................................................129
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1Introduction
About This Chapter
1.1 Network Application
The OptiX RTN 900 is a new generation TDM/Hybrid/Packet integrated microwave
transmission system developed by Huawei. It provides a seamless microwave transmission
solution for mobile communication network or private networks.
1.2 Components
The OptiX RTN 905 adopts a split structure. The system consists of the IDU 905 and the
ODU. Each ODU is connected to the IDU 905 through an IF cable.
OptiX RTN 905 1E/2E Radio Transmission System
IDU Hardware Description 1 Introduction
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1.1 Network Application
The OptiX RTN 900 is a new generation TDM/Hybrid/Packet integrated microwave
transmission system developed by Huawei. It provides a seamless microwave transmission
solution for mobile communication network or private networks.
OptiX RTN 900 Product Family
The OptiX RTN 900 series provide a variety of service interfaces and can be installed easily
and configured flexibly. The OptiX RTN 900 series provide a solution that can integrate TDM
microwave, Hybrid microwave, and Packet microwave technologies according to the
networking scheme for the sites, achieving smooth upgrade from TDM microwave to Hybrid
microwave, and from Hybrid microwave to Packet microwave. This solution meets the
transmission requirements of 2G, 3G, and LTE services while also allowing for future
network evolution and convergence.There are five types of OptiX RTN 900 Packet microwave products: OptiX RTN 905, OptiX
RTN 910, OptiX RTN 950, OptiX RTN 950A, and OptiX RTN 980. Users can choose the
product best suited for their site.
NOTE
Unless otherwise specified, OptiX RTN 905 mentioned in this document refers to OptiX RTN 905
1E/2E. For details about OptiX RTN 905 1A/2A/1C, see OptiX RTN 905 1A/2A/1C Product Description.
The OptiX RTN 910 does not provides V100R006C10 or late version.
Table 1-1OptiX RTN 900 product family
Product Name IDU Appearance Characteristic
OptiX RTN 905 l 1 U high IDU.
l Five types of integrated chassis (1A/2A/1C/1E/
2E).
l One or two microwave links.
OptiX RTN 910 l 1 U high IDU.
l Boards pluggable.
l Integrated service ports on system control,
switching, and timing boards.
l One or two IF boards.
OptiX RTN 950 l 2 U high IDU.
l Boards pluggable.
l 1+1 protection for system control, switching, and
timing boards.
l A maximum of six IF boards.
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Product Name IDU Appearance Characteristic
OptiX RTN 950A l 2 U high IDU.
l Boards pluggable.
l Integrated service ports on system control,switching, and timing boards.
l A maximum of six IF boards.
OptiX RTN 980 l 5 U high IDU.
l Boards pluggable.
l 1+1 protection for system control, switching, and
timing boards.
l Integrated service ports on system control,
switching, and timing boards.
l
A maximum of fourteen IF boards.
OptiX RTN 905
The OptiX RTN 905 is access-layer microwave equipment. It can independently construct a
network or jointly construct a network with the OptiX RTN 910/950/950A/980. Figure 1-1
shows the microwave transmission solution provided by the OptiX RTN 905.
NOTE
l In this solution, services accessed by the OptiX RTN 905 can be backhauled by the OptiX RTN
950/950A/980 after being converged at air interfaces, or be directly backhauled by the OptiX RTN 905.
l When three or more microwave directions are required, cascade several sets of the OptiX RTN 905 or use
the OptiX RTN 950/950A/980 that provides more powerful functions and supports more microwave
directions.
Figure 1-1Microwave transmission solution provided by the OptiX RTN 905
RTN 905 BTSNodeB BSCRNC
FE/GE
E1/
STM-1
E1/
STM-1
FE/GE
RTN 950/
950A/980
Regional
TDM
Network
Regional
Packet
Network
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1.2 Components
The OptiX RTN 905 adopts a split structure. The system consists of the IDU 905 and the
ODU. Each ODU is connected to the IDU 905 through an IF cable.
IDU 905
The IDU 905 is the indoor unit for an OptiX RTN 905 system. It receives and multiplexes
services, performs service processing and IF processing, and provides the system control and
communications function.
Table 1-2lists the basic features of the IDU 905.
Table 1-2Features of the IDU 905
Item Description
Type IDU 905 1E IDU 905 2E
Chassis height 1U
Extended subcard Supported
Service interface l 4 x GE electronic interface
l 4 x GE/FE optical interface or GE electrical interface (SFP)b
l 16 x E1 interface
l1 x multifunction cascading interface
a, b
l 1 x E1 services cascading interfaceb
l 2 x STM-1 interface
NOTE
a: IDU 905 1Es can be cascaded through multifunction cascading interfaces to implement
1+1/XPIC/PLA/EPLA function, or transmit E1 services. IDU 905 2Es can be cascaded
through multifunction cascading interfaces to implement EPLA function, or transmit E1
services.
b: Two of GE interface (SFP) and two cascading ports share same physical ports (combo
ports). When cascading is not used, the two combo ports can be set as GE ports.
Radio type l Integrated IP radio (E1 + Ethernet)
l Integrated IP radio (STM-1 + Ethernet)
l SDH radio
Highest modulation 2048QAM
Number of IF/RF channels 1 2
RF configuration mode l 1+0
l 1+1 HSB/FD/SD (NE cascading)
l XPIC (NE cascading)
l 2(1+0)
l 2+0
l 1+1 HSB/FD/SD
l XPIC
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Figure 1-2IDU 905 1E
Figure 1-3IDU 905 2E
ODU
The ODU is the outdoor unit for the OptiX RTN 900. It converts frequencies and amplifies
signals.
The OptiX RTN 900 product series can use the RTN 600 ODU and RTN XMC ODU,
covering the entire frequency band from 6 GHz to 42 GHz.
Table 1-3RTN XMC ODUs that the OptiX RTN 905 supports
Item Description
High-Power ODU
ODU type XMC-2 XMC-2H XMC-3
Frequency band 6/7/8/10/10.5/11/13/15/18/23/26/2
8/32/38/42 GHz
6/7/8/11 GHz 13/15/18/23/26/
28/32/38 GHz
Highest-order
Modulation
2048QAM (13/15/18/23/38 GHz,
7/8 GHz XMC-2E)
1024QAM
(6/10/10.5/11/26/28/32/42 GHz)
256QAM (7/8 GHz Normal)
2048QAM 2048QAM
Channel
spacing
3.5/7/14/28/40/50/56 MHz
NOTE
The 10.5 GHz frequency band does
not support 40/50/56 MHz channel
spacing.
7/14/28/40/50/5
6 MHz
7/14/28/40/50/5
6 MHz
(13/15/18/23/26
/28/38 GHz)
7/14/28/40/50/5
6/112 MHz (32
GHz)
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Table 1-4RTN 600 ODUs that the OptiX RTN 905 supports
Item Description
High-Power ODU Standard Power ODU
ODU type HP, HPA SP, SPA
Frequency band 6/7/8/10/10.5/11/13/15/18/2
3/26/28/32/38 GHz (HP)
6/7/8/11/13/15/18/23 GHz
(HPA)
7/8/11/13/15/18/23/26/38
GHz (SP ODU)
6/7/8/11/13/15/18/23 GHz
(SPA ODU)
Highest-order
Modulation
256QAM 256QAM
Channel spacing 7/14/28/40/56 MHz
(6/7/8/10/11/13/15/18/23/26/
28/32/38 GHz)
7/14/28 MHz (10.5 GHz)
3.5/7/14/28 MHz
There are two methods for mounting the ODU and the antenna: direct mounting and separate
mounting.
l The direct mounting method is generally adopted when a small- or medium-diameter and
single-polarized antenna is used. In this situation, if one ODU is configured for one
antenna, the ODU is directly mounted at the back of the antenna. If two ODUs are
configured for one antenna, an RF signal combiner/splitter (hence referred to as a hybrid
coupler) must be mounted to connect the ODUs to the antenna. Figure 1-4illustrates thedirect mounting method.
The direct mounting method can also be adopted when a small- or medium-diameter and
dual-polarized antenna is used. Two ODUs are mounted onto an antenna using an
orthomode transducer (OMT). The method for installing an OMT is similar to that for
installing a hybrid coupler.
Figure 1-4Direct mounting
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l The separate mounting method is adopted when a large- or medium-diameter and single-
or dual-polarized antenna is used. Figure 1-5shows the separate mounting method. In
this situation, a hybrid coupler can be mounted (two ODUs share one feed boom).
Figure 1-5Separate mounting
NOTE
The OptiX RTN 905 provides an antenna solution that covers the entire frequency band, and supports
single-polarized antennas and dual-polarized antennas with diameters of 0.3 m to 3.7 m along with the
corresponding feeder system.
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2Chassis
About This Chapter
The IDU 905 is a 1 U integrated chassis.
2.1 Structure
The IDU 905is an air-cooled integrated chassis. Its dimensions are 44 mm x 442 mm x 220
mm (H x W xD).
2.2 Installation Mode
The IDU 905can be deployed in various scenarios and installed on several types of racks,
cabinets, andsurfaces.
2.3 Airflow
An IDU 905 chassis is cooled by taking in air on the left side and expelling air on the right
side (as observed from the front of the chassis).
2.4 IDU Labels
This section lists the labels that areaffixed on the IDU 905 chassis. Adhere to any warnings
and instructions on the labels when performing various types of tasks to avoid any personal
injury or damage to equipment.
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2.1 Structure
The IDU 905 is an air-cooled integrated chassis. Its dimensions are 44 mm x 442 mm x 220
mm (H x W x D).
Figure 2-1shows the appearance of an IDU 905 chassis.
Figure 2-1Appearance of an IDU 905 chassis (IDU 905 2E as an example)
2.2 Installation Mode
The IDU 905 can be deployed in various scenarios and installed on several types of racks,
cabinets, and surfaces.
The IDU 905 can be installed:
l In a 300 mm deep European Telecommunications Standards Institute (ETSI) cabinet
l In a 600 mm deep ETSI cabinet
l In a 450 mm deep 19-inch cabinet
l In a 600 mm deep 19-inch cabinet
l In a 19-inch open rack
l In an outdoor cabinet for wireless equipment
l On a wall
l On a table
2.3 Airflow
An IDU 905 chassis is cooled by taking in air on the left side and expelling air on the right
side (as observed from the front of the chassis).
Figure 2-2shows the airflow in an IDU 905 chassis.
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Figure 2-2Airflow in an IDU 905 2E chassis
2.4 IDU Labels
This section lists the labels that are affixed on the IDU 905 chassis. Adhere to any warnings
and instructions on the labels when performing various types of tasks to avoid any personal
injury or damage to equipment.
Label Description
Table 2-1provides the description of the labels.
Table 2-1Description of IDU labels
Label Label Name Description
Grounding label Indicates the
grounding
position of an
IDU chassis.
Power caution
label
Instructs you to
read related
instructions
before
performing any
power-related
tasks.
PULL
Operation
guidance label
Instructs you to
slightly pull the
switch lever
outwards before
setting the
switch to the "I"
or "O" position.
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Label Label Name Description
WARNING
-48V OUTPUT
TURN OFF POWER BEFORE
DISCONNECTING IF CABLE
Operation
warning label
Instructs you to
turn off the
ODU power
switch before
removing IF
cables.
ESD protection
label
Indicates that
the equipment is
sensitive to
static electricity.
/ QUALIFICATION CARD
MADE IN CHINAHUAWEI TECHNOLOGIES CO.,LTD.
HUAWEI
Qualification card
label
Indicates that
the equipment
has been quality
checked.
RoHS label Indicates that
the equipment
complies with
the requirements
specified in the
RoHS directive.
8V;5A
OptiX RTN 905
1E nameplate
Indicates the
product name
and
certification.
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Label Label Name Description
8V;8A
OptiX RTN 905
2E nameplate
Label Positions
Figure 2-3shows the positions of IDU labels.
Figure 2-3Positions of IDU (IDU 905 2E as an example) labels
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3IDU 905 Overview
About This Chapter
This section describes the functions, features, structure, logical boards, signal processing,
front panel, and technical specifications of the IDU 905.
3.1 Equipment Photos
This sectionprovides photos of the OptiX RTN 905.
3.2 Quick Reference
3.3 Functionsand Features
The IDU 905 processes integrated IP radio services (native TDM + Ethernet) and SDH radioservices (TDM is the abbreviated form of time division multiplexing), and provides common
management channels and auxiliary channels.
3.4 System Architecture
The OptiX RTN 905 consists of a series of functional units, including the service interface
unit, timeslotcross-connect unit, packet switching unit, IF unit, control unit, clock unit,
auxiliary interface unit, fan unit, power unit, and ODU.
3.5 Logical Board Configuration
The IDU 905, integrated and case-shaped equipment, physically comprises an integrated
system board and an MN1 subboard. Each functional unit on the system board of the IDU 905
corresponds to a logical board and is allocated with a logical slot. The MN1 subboard also
corresponds to a logical board and is allocated with a logical slot. Therefore, the network
management system (NMS) can manage these functional units and the MN1 subboard as
independent objects.
3.6 Service Signal Processing Flow
The signal processing flows for the IP microwave and SDH microwave are different.
3.7 Front Panel
The IDU 905 has ports, ODU power switches (available only on the IDU 905 2E), and
indicators on its front panel.
3.8 Ethernet SFP Modules Types
The GE SFP ports and COMBO ports on the IDU 905 support multiple types of small form-factor pluggable (SFP) modules.
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3.9 SDH SFP Module Types
SDH ports on the IDU 905 support multiple types of small form-factor pluggable (SFP)
modules.
3.10 Technical Specifications
The technical specifications of the IDU 905 include microwave performance, portperformance, clock timing and synchronization performance, mechanical behaviors, and
power consumption.
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3.1 Equipment Photos
This section provides photos of the OptiX RTN 905.
Figure 3-1IDU 905 1E
Figure 3-2IDU 905 2E
3.2 Quick Reference
3.2.1 Loopback Types
Table 3-1Loopback types supported by logical boards on the IDU 905 1E/2E
Logical Board Loopback Type
EG6 l Inloops at the MAC layer of Ethernet ports
l Inloops at the PHY layer of Ethernet ports
VS2 l Inloops at time division multiplexing (TDM)
cascade ports
l Outloops at TDM cascade ports
EG2 l Inloops at the MAC layer of Ethernet ports
l Inloops at the PHY layer of Ethernet ports
ISV3 l IF inloops at IF ports
l IF outloops at IF ports
l Composite inloops at IF ports
l Composite outloops at IF ports
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Logical Board Loopback Type
MP1 l Inloops at tributary ports
l Outloops at tributary ports
CD1 l Inloops at optical ports
l Outloops at optical ports
l Inloops on VC-4 paths
l Outloops on VC-4 paths
3.2.2 Weight and Power Consumption
Table 3-2Weight and power consumption of the IDU 905
Product Weight (kg) Typical PowerConsumption (W)
IDU 905 1E 2.90 kg (excluding the
weight of the MN1
subboard)
30 W (excluding the power
consumed by the MN1
subboard)
IDU 905 2E 3.10 kg (excluding the
weight of the MN1
subboard)
42 W (excluding the power
consumed by the MN1
subboard)
MN1 subboard 0.18 kg 5 W
3.3 Functions and Features
The IDU 905 processes integrated IP radio services (native TDM + Ethernet) and SDH radio
services (TDM is the abbreviated form of time division multiplexing), and provides common
management channels and auxiliary channels.
3.3.1 Basic Functions and FeaturesThe IDU 905 has packet switching, system control and communication, and clock processing
capabilities. It also provides GE service ports, SDH service ports, PDH service ports, versatile
cascade ports, auxiliary ports, and management ports.
Table 3-3lists the basic functions and features that the IDU 905 supports.
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Table 3-3Basic functions and features
Function and Feature Description
IDU 905 1E IDU 905 2E
Basic
functions
Switching
capacity
Supports 8 Gbit/s packet switching.
Cross-connect
capacity
The cross-connect unit supports the following capacities:
l Higher-order cross-connect capacity: 25x25 cross-connections at the VC-4
level
l Lower-order cross-connect capacity: full time-division cross-connections at
the VC-12 or VC-3 level, which are equivalent to 8x8 VC-4s
Radio service
capability
Receives and transmits one Integrated
IP radio service or one SDH radio
service.
Receives and transmits two Integrated
IP radio services or two SDH radio
services.
System control
and
communicatio
n
Manages the IDU and ODU, collects performance events and alarms, and
implements communications between the network management system (NMS)
and an NE to help the NMS to control and manage the NE.
Clock Clock source Provides a system clock and frame headers for service signals and overhead
signals for other units when tracing an appropriate clock source.
The traced clock source can be any of the following:
l External clock
l PDH tributary clock (Any of an IDU 905's 16 E1s can function as a tributary
clock source.)
l SDH line clock
l Radio link clock
l Synchronous Ethernet clock (not supported by small form-factor pluggable
[SFP] electrical modules)
l Clock extracted from a versatile cascade port
l Line clock extracted from a channelized STM-1 port (if an MN1 subboard is
installed)
l E1 clock extracted from a channelized STM-1 port (if an MN1 subboard is
installed)
l IEEE 1588v2 clock
l IEEE 1588 adaptive clock recovery (ACR) clock (if an MN1 subboard is
installed)
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Function and Feature Description
IDU 905 1E IDU 905 2E
Clock
protection
Supports the following clock protection schemes:
l Protection implemented by providing clock sources with different priorities
l Protection implemented by running the Synchronization Status Message
(SSM) protocol
l Protection implemented by running the extended SSM protocol
NOTE
Only radio ports, versatile cascade ports, and Ethernet service ports support clock
protection implemented by running the SSM protocol and extended SSM protocol.
IEEE 1588v2
time
synchronizatio
n
Supports the following clock models: ordinary clock (OC), boundary clock
(BC), transparent clock (TC), and TC+BC.
NOTE
Only radio ports and Ethernet service ports support IEEE 1588v2 time synchronization.
IEEE 1588
ACR
Supported (MN1 subboards required)
External clock
port
Provides one external clock port (2048 kbit/s or 2048 kHz).
External time
port
Provides one external time port (RS422 level, 1PPS+TOD, or DCLS) (PPS is
the abbreviated form of pulse per second, TOD of time of day, and DCLS of DC
level shifter).
Network
management
Data
communicatio
n
networ
k
(DCN)
channel
s
Outb
andDC
N
Supports a maximum of six data
communications channels (DCCs):one IF port, two SDH service ports,
two versatile cascade ports, and one
external clock port.
Supports a maximum of seven DCCs:
two IF ports, two SDH service ports,two versatile cascade ports, and one
external clock port.
Inba
nd
DC
N
Supports inband DCN. The DCN bandwidth is configurable.
DCN
management
protocols
l Huawei Embedded Control Channel (HWECC) protocol
l IP protocol
l L2 DCN protocol stack
Simple
Network
Management
Protocol
(SNMP)
Supports SNMP Get and Set for managing devices.
IF functions See 3.3.2 IF Functions and Features.
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Function and Feature Description
IDU 905 1E IDU 905 2E
MPLS/PWE3 functions
(MPLS is the abbreviatedform of Multiprotocol Label
Switching, and PWE3 of
pseudo wire emulation
edge-to-edge.)
See 3.3.3 MPLS/PWE3 Functions.
Ethernet service functions See 3.3.4 Ethernet Service Functions.
SDH port
functions
Basic function Receives and transmits two channels of STM-1 optical or electrical signals.
Port mode l Native STM-1
l Channelized STM-1 (MN1 subboards required)
Port
categor
y
Opti
cal
port
l Uses SFP optical modules to provide Ie-1, S-1.1, L-1.1, and L-1.2 optical
ports.
l The performance of optical ports complies with ITU-T G.957.
Elec
trica
l
port
l Uses SFP electrical modules to provide electrical ports.
l The performance of electrical ports complies with ITU-T G.703.
K byte pass-
through
Supported
E1 portfunctions
Basic function Receives and transmits 16xE1 signals.
Port mode l Native E1
l Smart E1 (MN1 subboards required)
NOTE
Smart E1s can carry both circuit emulation service (CES) and Multi-Link Point-to-
Point Protocol (MLPPP) services. For details, see 3.3.3 MPLS/PWE3 Functions.
Port
impedance
Supports impedance setting (75-ohm/120-ohm) for an E1 port and identifies the
impedance of the cable connected to an E1 port.
Time
divisionmultiplexi
ng (TDM)
service
protection
Linear
multiplexsection
protection
(LMSP)
Supported
E1 subnetwork
connection
protection
(SNCP)
Supported
Radio ports, SDH ports, E1 ports, and cascade ports support SNCP.
Auxiliary
ports and
managem
ent ports
Ethernet NMS
port
Provides one 10/100BASE-T(X) port.
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Function and Feature Description
IDU 905 1E IDU 905 2E
NMS serial
port
Provides one NMS serial port.
NE cascade
port
Provides one 10/100BASE-T(X) port.
Asynchronous
data port
Provides one RS232 port with a maximum transmission rate of 19.2 kbit/s.
Alarm input/
output port
Provides one alarm port with three inputs and one output.
Outdoor
cabinet
monitoringport
Provides one RS485 port.
Universal
Serial Bus
(USB) port
Provides one USB port.
Mini USB port Provides one mini USB port, which connects to the Web LCT.
Versatile
cascade
ports
NOTE
Ethernet
SFP
optical/
electrical
modules
can be
installed
at
versatile
cascade
ports so
that the
ports can
functionas
Ethernet
ports.
TDM service
cascade port
Provides two TDM service cascade ports, each of which can receive and
transmit one channel of 2 Mbit/s overhead signals (including DCC bytes and S1
bytes) and 46 channels of native or smart E1 signals. Note that a TDM service
cascade port can receive and transmit only E1 signals of the same type, that is,
native or smart E1 signals.
NOTE
A TDM service cascade port and other functional ports share the COMBO1 port physically.
Only one of the preceding ports is available at a time.
1+1 cascade
port
Provides one 1+1 cascade port to
receive and transmit 1+1 protection
group cascading signals.
N/A
Physical link
aggregation
(PLA) cascade
port
Provides one PLA cascade port to
receive and transmit PLA group
cascading signals.
N/A
Enhanced PLA
(EPLA)
cascade port
Provides one EPLA cascade port to receive and transmit EPLA group cascading
signals.
Cross
polarization
interference
cancellation
(XPIC)
auxiliary port
Provides one XPIC auxiliary port to
receive and transmit signals sent
between the NEs forming an XPIC
group. These signals include DCN
signals, clock signals, and XPIC
decoupling signals.
N/A
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Function and Feature Description
IDU 905 1E IDU 905 2E
Operation
andmanagem
ent
Loopback l Supports IF inloops, IF outloops, composite inloops, and composite outloops
at IF ports.
l Supports inloops at the PHY layer of Ethernet ports.
l Supports inloops at the MAC layer of Ethernet ports.
l Supports inloops and outloops at SDH electrical or optical ports.
l Supports inloops and outloops on VC-4 paths at SDH ports.
l Supports inloops and outloops at E1 ports.
l Supports inloops and outloops at TDM cascade ports.
In-service field
programmable
gate array(FPGA)
loading
Supported
Pseudo
random binary
sequence
(PRBS) testing
Supports PRBS bit error rate (BER) tests at IF ports and E1 ports.
SFP module
information
query
Supported
Manufacturer
information
query
Supported
Power
consumption
query
Supported
Subboard type
matching
Supported
Temperature
monitoring
Supported
Voltage
monitoring
Supported
Indicator
monitoring
Supported
3.3.2 IF Functions and Features
The IDU 905 processes IF signals, provides management channels to ODUs, and supplies -48V power to ODUs.
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Table 3-4lists the IF functions and features that the IDU 905 supports.
Table 3-4IF functions and features
Function and Feature Description
IDU 905 1E IDU 905 2E
Basic functions l Receives and transmits IF signals.
l Provides management channels to ODUs.
l Supplies -48 V power to ODUs.
Number of IF ports 1 2
Radio type l Integrated IP radio
l SDH radio
Integrated IP radio servicetype
l Native E1 + Ethernet
l Native STM-1 + Ethernet
NOTE
Ethernet services are native Ethernet services or packet services that
are encapsulated in pseudo wire emulation edge-to-edge (PWE3)
mode.
SDH radio service type l 1xSTM-1
l 2xSTM-1
NOTE
If an IDU 905 2E carries 2xSTM-1 radio signals in one channel, it can
carry only Integrated IP radio (native E1 + Ethernet) signals in the
other channel.
Automatic transmit power
control (ATPC)
Supported
Adaptive modulation
(AM)
Supported
Compression of Ethernet
frame headers
Supported
E1 priorities Supported
Cross polarizationinterference cancellation
(XPIC)
Supported and implementedby cascading NEs
Supported and implementedby using the two IF units
within an NE
Radio capacity and radio
working mode
See 3.10.1.1 IF Running Modes and Microwave Work
Modes, 3.10.1.2 Microwave Work Modes (IS3 Running
Mode), and 3.10.1.3 Microwave Work Modes (IS2
Running Mode).
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Function and Feature Description
IDU 905 1E IDU 905 2E
Link
protection
1+1
HSB/FD/SDprotection
(HSB is the
abbreviated
form of hot
standby, FD of
frequency
diversity, and
SD of space
diversity.)
Supported and implemented
by cascading NEs
Supported and implemented
by using the two IF unitswithin an NE
Air-interface
linkaggregation
group (LAG)
Not supported Supported and implemented
by using the two IF unitswithin an NE
Physical link
aggregation
(PLA)/
Enhanced
PLA (EPLA)
Supported and implemented
by cascading NEs
Supported
PLA and 2+0 EPLA are
implemented by cascading
the two IF units within an
NE, whereas 3+0 and 4+0
EPLA are implemented by
cascading NEs.
3.3.3 MPLS/PWE3 Functions
The IDU 905 supports Multiprotocol Label Switching (MPLS)/pseudo wire emulation edge-
to-edge (PWE3) functions to achieve carrier-class transportation of packet services.
Table 3-5lists the MPLS/PWE3 functions that the IDU 905 supports.
Table 3-5MPLS/PWE3 functions
Function and Feature DescriptionMPLS
tunnel
Setup mode Static label switched paths (LSPs)
VLAN subinterface Supported
Protection 1:1 MPLS tunnel automatic protection
switching (APS)
OAM l MPLS OAM that complies with ITU-T Y.
1710 and ITU-T Y.1711
l LSP ping and LSP traceroute functions
l MPLS Transport Profile (MPLS-TP) tunnel
OAM
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Function and Feature Description
PWE3 ETH PWE3
service
Encapsulati
on mode
l Raw mode
l Tagged mode
Service
types
l Ethernet line (E-Line)
l Ethernet aggregation (E-Aggr)
l Ethernet local area network (E-LAN)
(virtual private LAN service [VPLS])
Circuit
emulation
service
(CES)
service
Service
port types
l Smart E1
l Smart E1 provided by channelized STM-1
l Smart E1 provided by a versatile cascade
port
Maximum
number of
services
The maximum number of CES services
supported by a specific logical board is as
follows:
l CD1: 80
l MP1: 16
l VS2: 80
NOTE
One NE supports a maximum of 80 CES services.
Emulation
mode
l Structure-Aware TDM Circuit Emulation
Service over Packet Switched Network
(CESoPSN) (TDM is the abbreviated form
of time division multiplexing)
l Structure-Agnostic Time Division
Multiplexing over Packet (SAToP)
Service
type
Point-to-point service (that is, one service port
corresponds to one PW.)
Idle
timeslot
compressio
n
Supported
Transmission of SDH
overheads
Supported
Fractional
E1
Supported
Jitter
buffering
time (us)
875 to 16000
Packet
loading
time (us)
125 to 5000
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Function and Feature Description
CES
adaptive
clock
recovery
(ACR)
Supported
Retiming Supported
Multi-Link
Point-to-
Point
Protocol
(MLPPP)
Types of
links
carrying
MLPPP
l Smart E1
l Smart E1 provided by channelized STM-1
l Smart E1 provided by a versatile cascade
port
Maximum
number of
supported
PPP links
234
Maximum
number of
supported
MLPPP
groups
64
Maximum
number of
links in one
MLPPPgroup
16
Setup mode Static PWs
Maximum number of PWs 1024
Protection l 1:1 PW APS
l 1:1 PW fast protection switching (FPS)
OAM l Virtual circuit connectivity verification
(VCCV)
l
PW OAM that complies with ITU-T Y.1710and ITU-T Y.1711
l PW ping and PW traceroute functions
l MPLS-TP PW OAM
l Intelligent service fault diagnosis (one-click
PWE3 service fault diagnosis)
Multi-segment pseudo wire
(MS-PW)
Supported
Bandwidth control Supported by ETH PWE3 services
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3.3.4 Ethernet Service Functions
The IDU 905 can receive, transmit, and process 6xFE/GE signals.
Table 3-6lists the Ethernet service functions that the IDU 905 supports.
Table 3-6Ethernet service functions
Function and Feature Description
Basic functions Receives, transmits, and processes
FE/GE service signals.
Port specifications GE fixed electrical
port
Provides four 10/100/1000BASE-T(X)
ports (For an IDU 905 2E, ports GE1 and
GE2 can supply power over Ethernet).
Ethernet SFP
optical/electrical
port (SFP is the
abbreviated form
of small form-
factor pluggable)
Provides four ports by using SFP
modules of any of the following types:
l Dual-fiber bidirectional FE/GE
optical module
l Single-fiber bidirectional FE/GE
optical module
l 10/100/1000BASE-T(X) GE electrical
module
NOTE
Two of the ports are versatile cascade ports
where Ethernet SFP optical/electrical modules
are installed.
Port attributes Working mode l Supports 10M/100M/1000M full-
duplex and auto-negotiation for GE
electrical ports.
l Supports 1000M full-duplex and auto-
negotiation for GE optical ports.
l Supports 100M full-duplex for FE
optical ports.
TAG attribute Supports the following TAG attributes for
Ethernet ports: tag aware, access, and
hybrid.
Jumbo frame Supports jumbo frames with a maximum
length of 9600 bytes.
Traffic control Supports the port-based traffic control
function that complies with IEEE 802.3x.
Power over Ethernet
(supported only by the
IDU 905 2E)
Number of ports
supporting power
over Ethernet
2
NOTE
An OptiX RTN 905 2E supports a maximum
of four microwave directions using two power
over Ethernet ports and two IF ports.
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Function and Feature Description
Complex traffic
classification
Supports port traffic classification based
on SMAC address, DMAC address,
VLAN ID, VLAN priority, IP address,
DSCP, protocol type, Port number and
ICMP type.
Traffic policing Supports flow-based traffic policing and
the setting of peak information rates
(PIRs) and committed information rates
(CIRs) in steps of 64 kbit/s.
Queue scheduling l Supports eight levels of priority
scheduling on each Ethernet port or
Integrated IP radio port.
l Flexibly sets a queue scheduling
scheme for each Ethernet port and
Integrated IP radio port. Queue
scheduling schemes include strict
priority (SP), weighted round robin
(WRR), and SP+WRR.
Congestion
avoidance
Supports tail drop and weighted random
early detection (WRED).
Traffic shaping Supports traffic shaping for a specific
port, priority queue, or service flow, and
the setting of PIRs and CIRs in steps of
64 kbit/s.
H-QoS Supports multilevel QoS scheduling
based on ports, virtual user-network
interfaces (V-UNIs), V-UNI groups,
tunnels, PWs, and QinQ links.
ETH OAM Ethernet service
OAM
l Supports ETH OAM functions that
comply with IEEE 802.1ag.
l Supports packet loss, delay, and delay
variation monitoring functions that
comply with ITU-T Y.1731.
Ethernet port
OAM
Supports ETH OAM functions that
comply with IEEE 802.3ah.
Remote network monitoring (RMON) Supported
3.4 System Architecture
The OptiX RTN 905 consists of a series of functional units, including the service interface
unit, timeslot cross-connect unit, packet switching unit, IF unit, control unit, clock unit,
auxiliary interface unit, fan unit, power unit, and ODU.
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Figure 3-3Block diagram
Async data
External alarm
Packet
switching
unit
IF unit
ODU
STM-1
-48V DC
IDU
FE/GE
Ethernet
signal
Timeslotcross-
connect
unit
TDM
signal
Service
interface
unit
Control and
overhead bus
Fan
unit
Clock
unit
Control
unit
Auxiliary
interface
unit
Power
unit
External time
NM interface
Ethernet
signal
TDM
signal
IF signal
RF
signal
Antenna
TDM cascading
External clock
E1
Table 3-7Functional units
Functional Unit Function
Service interface
unit
l Receives/Transmits FE/GE signals.
l Receives/Transmits TDM E1 signals.
l Receives/Transmits STM-1 signals.
l Receives/Transmits TDM cascading signals.
Timeslot cross-
connect unit
Provides the cross-connect function and grooms TDM services.
Packet switching
unit
l Processes Ethernet services and forwards packets.
l Processes MPLS labels and forwards packets.
l Processes PW labels and forwards packets.
IF unit l Maps service signals to microwave frame signals and demaps
microwave frame signals to service signals.
l Performs conversion between microwave frame signals and IF
analog signals.
l Provides the O&M channel between the IDU and the ODU.
lSupports FEC.
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Functional Unit Function
Control unit l Provides the system communications and control.
l Provides the system configuration and management.
l Collects alarms and monitors performance.
l Processes overheads.
Clock unit l Traces the clock source signal and provides various clock signals
for the system.
l Supports input and output of external clock.
l Supports input or output of external time signal.
l Provides the time synchronization function.
Auxiliary interface
unit
l Provides the asynchronous data interface.
l Provides the external alarm input/output interface.
Power unit l Accesses -48 V DC power.
l Provides DC power for the IDU.
l Provides -48 V DC power for the ODU.
Fan unit Provides air cooling for the IDU.
ODU l Converts IF signals into RF signals.
l Amplifies RF signals.
3.5 Logical Board Configuration
The IDU 905, integrated and case-shaped equipment, physically comprises an integrated
system board and an MN1 subboard. Each functional unit on the system board of the IDU 905
corresponds to a logical board and is allocated with a logical slot. The MN1 subboard also
corresponds to a logical board and is allocated with a logical slot. Therefore, the network
management system (NMS) can manage these functional units and the MN1 subboard as
independent objects.
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Figure 3-4Logical board configuration for the IDU 905 1E/2E
IDU 905 1E
CD1PIU MN1
Slot 5 Slot 3
EG6AUX
Slot 7
CSHP
Slot 1
MP1VS2/EG2
Slot 10 Slot 8 Slot 9 Slot 15
FAN
Slot 6
ISV3
Slot 16
IDU 905 2E
CD1ISV3PIU MN1
Slot 5 Slot 3
EG6AUX
Slot 7
CSHP
Slot 1
MP1VS2/
EG2
Slot 10 Slot 8 Slot 9 Slot 15
FAN
Slot 6
ISV3
Slot 16Slot 4
Table 3-8List of logical boards for the IDU 905 1E/2E
BoardAcronym
Board Name Logical Slot Description
CSHP Hybrid system
control,
switching, and
timing board
Slot 1 l Supports the 8 Gbit/s packet switching.
l Supports a maximum of VC-12/VC-3/VC-4s
cross-connections equivalent to 8x8 VC-4s.
l Performs system communication and control.
l Processes clock and time signals. Provides one
external clock input/output port and one external
time input or output port. The external clock port
shares a port with the external time port.
l Provides one Ethernet NM port, one NM serial
port, and one NM cascade port.
l Provides one Huawei outdoor cabinet monitoring
port that shares a port with the external time port.
l Provides a Type A USB port that supports
software upgrades, data backup, and command
script loading using a USB flash drive.
l Provides a Mini USB port to connect to a local
maintenance terminal.
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BoardAcronym
Board Name Logical Slot Description
ISV3 Versatile IF
board
Slot 3 (IDU
905 1E)
Slot 3/4 (IDU
905 2E)
l Provides one IF port.
lSupports QPSK to 2048QAM modulation withQPSK/16QAM strong FEC and 512QAM/
1024QAM light FEC when interconnected with
the OptiX RTN 905 or ISV3 boards of the OptiX
RTN 910/950/950A/980, among which 2048QAM
is used only when AM is enabled.
l Supports QPSK to 256QAM modulation when
interconnected with ISU2/ISX2 boards of the
OptiX RTN 910/950/950A/980.
l Supports integrated IP microwave and SDH
microwave. The supported service modes are
Native E1+Ethernet, Native STM-1+Ethernet orSDH.
l Supports the XPIC function.
l Supports the AM function.
l Supports Ethernet frame header compression.
l Supports the PLA/EPLA function.
EG6 4-port RJ45 + 2-
port SFP Gigabit
Ethernet
interface board
Slot 7 l Provides six GE ports, of which four can be only
RJ45 GE electrical ports, and the other two can be
GE/FE optical ports or GE electrical ports
provided by SFP modules. The GE electrical ports
are compatible with the FE electrical ports.l The first and second GE electrical ports on the
IDU 905 2E support P&E power over Ethernet.
VS2 2-port versatile
cascading
interface board
Slot 8 l Provides two cascade ports for transmitting
service signals, DCN signals, and clock signals.
On two interconnected OptiX RTN 905 NEs,
cascade ports are connected with an SFP cable.
l The first cascade port is multifunctional cascade
port. IDU 905 1Es can be cascaded through
multifunction cascade ports to implement 1+1/
XPIC/PLA/EPLA, or transmit E1 services. IDU
905 2Es can be cascaded through multifunction
cascade ports to implement EPLA, or transmit E1
services.
l The second cascade port is a TDM cascade port
(transmitting 46xE1 signals).
l Supports CES and ML-PPP functions when
working with an MN1 subcard.
NOTE
EG2 and VS2 boards share same logical slot and cannot
coexist. If the logical slot is configured as a VS2 board, the
two cascade ports cannot transmit Ethernet services.
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BoardAcronym
Board Name Logical Slot Description
EG2 2-port SFP
Gigabit Ethernet
interface board
Slot 8 l Uses SFP modules to provide two GE/FE optical
ports or GE electrical ports. The GE electrical
ports are compatible with the FE electrical ports.
NOTE
EG2 and VS2 boards share same logical slot and cannot
coexist. If the logical slot is configured as a EG2 board, the
two cascade ports cannot transmit cascading signals.
MP1 16xE1 tributary
board
Slot 9 l Provides sixteen 75-ohm or 120-ohm E1 ports.
l Supports CES and ML-PPP functions when
working with an MN1 subcard.
AUX Auxiliary
interface board
Slot 10 l Provides one asynchronous data port.
l Provides three-input and one-output external
alarm ports.
CD1 2xSTM-1
interface board
slot 15 l Uses SFP modules to provide two STM-1 optical/
electrical ports.
l Functions as c-STM-1 ports and supports CES and
ML-PPP functions when working with an MN1
subcard.
MN1 CES extension
board
slot 16 l Optional extension subcard.
l When an MN1 subcard is configured, an MP1 or
VS2 board supports CES and ML-PPP functions
and a CD1 board can provide c-STM-1 ports andsupports CES E1 and ML-PPP functions.
l No ports on its front panel
PIU Power board Slot 5 l Provides two -48 V DC power inputs.
FAN Fan board Slot 6 l Cools and ventilates the IDU.
3.6 Service Signal Processing Flow
The signal processing flows for the IP microwave and SDH microwave are different.
3.6.1 Integrated IP radio
This section describes the signal processing flow of E1 and Ethernet services when they are
simultaneously carried by the Integrated IP radio.
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Figure 3-5Service signal processing flow
CSHP ODU
RFSignal
IFSignal
IDU
Antenna
E1 E1 Signal
FE/GE
Ethernet
signal
MP1
E1 Signal
Ethernet
signal
ISV3
EG6
Table 3-9Service signal processing flow in the transmit direction
NO. Component Signal Processing Description
1 MP1 l Receives E1 signals.
l Performs HDB3 decoding.
l Transmits E1 signals to the timeslot cross-connect unit
on the CSHP.
EG6 l Receives FE/GE signals.
l Performs decoding.
l Aligns frames, strips the preamble code, and processes
the CRC check code.
l Forwards Ethernet frames to the packet switching unit
on the CSHP.
2 CSHP l The timeslot cross-connect unit transmits E1 signals to
the ISV3 based on service configurations.
l The packet switching unit processes Ethernet frames
based on service configurations and Layer 2 protocols
and forwards the Ethernet services to the ISV3.
NOTE
The packet switching unit can also encapsulate Ethernet
services into PWE3 services to form Ethernet frames carrying
PW packets.
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NO. Component Signal Processing Description
3 ISV3 l Selects the correct modulation scheme based on the
current channel quality.
lMaps E1 service signals and Ethernet frames into themicrowave frame payload area and adds microwave
frame overheads to form complete microwave frames.
l Performs FEC coding.
l Performs digital modulation.
l Performs D/A conversion.
l Performs analog modulation.
l Combines the analog IF signals and ODU O&M signals.
l Transmits the combined signals and -48 V power to the
ODU through the IF cable.
4 ODU l Splits the analog IF signals, ODU O&M signals, and -48
V power.
l Converts the analog IF signals into RF signals through
up conversions and amplification.
l Transmits the RF signals to the antenna through the
waveguide.
Table 3-10Service signal processing flow in the receive direction
NO. Component Signal Processing Description
1 ODU l Isolates and filters RF signals.
l Converts the RF signals into analog IF signals through
down conversions and amplification.
l Combines the IF signals and the ODU O&M signals.
l Transmits the combined signals to the IF board through
the IF cable.
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NO. Component Signal Processing Description
2 ISV3 l Splits the received analog IF signals and ODU O&M
signals.
lPerforms A/D conversion.
l Performs digital demodulation.
l Performs time domain adaptive equalization.
l Performs FEC decoding.
l Synchronizes and descrambles the frames.
l Extracts overheads from microwave frames.
l Extracts E1 service signals from microwave frames and
transmit the signals to the timeslot cross-connect unit on
the CSHP.
l Extracts Ethernet service signals from microwave
frames and transmits the signals to the packet switchingunit of the CSHP.
3 CSHP l The timeslot cross-connect unit transmits E1 signals to
the MP1 based on data configuration.
l The packet switching unit processes Ethernet frames
based on service configuration and Layer 2 protocols
and forwards the Ethernet services to the EG6.
NOTE
Ethernet services encapsulated in PWE3 mode are decapsulated
and forwarded to the EG6.
4 MP1 l Performs HDB3 coding.
l Outputs E1 signals.
EG6 l Aligns frames, adds the preamble code, and processes
the CRC check code.
l Performs coding.
l Outputs FE/GE signals.
3.6.2 SDH MicrowaveThis section describes the processing flow for SDH microwave service signals, including
STM-1 and E1 service signals.
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Figure 3-6Service signal processing flow of the SDH microwave
CSHP ODU
RFsignalIFsignal
IDU
AntennaE1
VC-4signal
STM-1
CD1
MP1 E1
signal
VC-4
signal
ISV3
Table 3-11Service signal processing flow of the SDH microwave in the transmit direction
NO. Component Signal Processing Description
1 CD1 l Receives STM-1 signals and performs descrambling.
l Processes overheads and pointers.
l Demultiplexes VC-4 signals.
l Transmits the VC-4 signals to the timeslot cross-connect
unit of the CSHP.
MP1 l Receives E1 signals.
l Performs HDB3 decoding.
lMaps E1 service signals into VC-12 signals.
l Multiplexes the VC-12 signals into VC-4 signals.
l Transmits the VC-4 signals to the timeslot cross-connect
unit of the CSHP.
2 CSHP The timeslot cross-connect unit grooms service signals to
the VC-4 signals of the ISV3 board.
3 ISV3 l Maps VC-4 signals into STM-1 microwave frame
payload, and adds microwave frame overheads and
pointers to form complete microwave frames.
l Performs FEC coding.
l Performs digital modulation.
l Performs D/A conversion.
l Performs analog modulation.
l Combines the analog IF signals and ODU O&M signals.
l Transmits the combined signals and -48 V power to the
ODU through the IF cable.
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NO. Component Signal Processing Description
4 ODU l Splits the analog IF signals, ODU O&M signals, and -48
V power.
lConverts the analog IF signals into RF signals throughup conversions and amplification.
l Transmits the RF signals to the antenna through the
waveguide.
Table 3-12Service signal processing flow of the SDH microwave in the receive direction
NO. Component Signal Processing Description
1 ODU l Isolates and filters RF signals.
l Converts the RF signals into analog IF signals throughdown conversions and amplification.
l Combines the IF signals and the ODU O&M signals.
l Transmits the combined signals to the IF board through
the IF cable.
2 ISV3 l Splits the received analog IF signals and ODU O&M
signals.
l Performs A/D conversion for the IF signals.
l Performs digital demodulation.
lPerforms time domain adaptive equalization.
l Performs FEC decoding.
l Synchronizes and descrambles the frames.
l Extracts overheads from microwave frames.
l Extracts VC-4 signals from the microwave frames, and
transmits the VC-4 signals to the timeslot cross-connect
unit of the CSHP.
3 CSHP The timeslot cross-connect unit grooms service signals to
the VC-4 signals of the CD1 and MP1 boards.
4 CD1 l
Adds overheads and pointers, and maps VC-4 signalsinto STM-1 signals.
l Performs scrambling and outputs STM-1 signals.
MP1 l Demultiplexes VC-12 signals from VC-4 signals.
l Demaps E1 service signals from the VC-12 signals.
l Performs HDB3 coding.
l Outputs E1 signals.
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3.7 Front Panel
The IDU 905 has ports, ODU power switches (available only on the IDU 905 2E), and
indicators on its front panel.
3.7.1 Front Panel Diagram
The front panel diagram shows the specific position of each component on the front panel.
Figure 3-7Front panel of the IDU 905 1E
1
LINK
L/A5
L/A6
OptiX RTN 905STAT
SRV
PWRA
PWRB(+)(-) (-)
NEGA RTNA NEGB RTNB(+)
-48V;5A
OAM USB
CLK/TOD/MON GE2GE1
GE3AL MI/ALMO GE4
NMS/COM
EXT/S1
GE5OUT IN
IN OUTGE6
MN1
1
COMBO
2
S TA T S RV
1
STM-1
2
OUT OUT
OUT
OUT
OUT
OUT
OUT
LOS1L /A 7 L /A 7
IN IN IN IN
LOS2 E11-16
HUAWEI
1E
43 3
52 6 7
8
9 10
12
11 13 14
WARNING
-48V OUTPUT
TURN OFF POWER BEFORE
DISCONNECTINGIF CABLE
!
ACT
1. Ground terminals 2. Power ports 3. Indicators
4. Cross polarization
interference cancellation
(XPIC) ports
5. ODU (IF) port 6. Universal Serial Bus
(USB) ports
7. Management and
auxiliary ports
8. GE fixed electrical ports 9. Ethernet small form-
factor pluggable (SFP) ports
10. COMBO ports 11. STM-1 ports 12. MN1 subboard
13. E1 signal port (1-16) 14. Electrostatic discharge
(ESD) jack
-
Figure 3-8Front panel of the IDU 905 2E
1
LINK1
LINK2
ACT1
ACT2
L/A5
L/A6
P1
P2
OptiX RTN 905STAT
SRV
PWRA
PWRB(+)(-) (-)
NEGARTNA NEGB RTNB(+)
-48V;8A
WARNING
-48V OUTPUT
TURN OFF POWER BEFORE
DISCONNECTINGIF CABLE
!
ODU1
PULL
ON
ODU2
PULL
ON OFF OFF
OAM USB
CLK/TOD/MON
GE3
G E1/ P1 G E2/ P2
AL MI/ALMO GE4
NMS/COM
EXT/S1
GE5OUT IN
IN OUTGE6
MN1
1
COMBO
2
S TA T S RV
1
STM-1
2
OUT OUT
OUT
OUT
OUT
OUT
OUT
LOS1L /A 7 L /A 7IN IN IN IN
LOS2 E11-16
HUAWEI
2E
43 3
52 6 7
8
9 10 11
15
12 13 14
1. Ground terminals 2. Power ports 3. Indicators
4. ODU power switches 5. ODU (IF) ports 6. USB ports
7. Management and
auxiliary ports
8. Power over Ethernet ports 9. GE fixed electrical ports
10. Ethernet SFP ports 11. COMBO ports 12. STM-1 ports
13. E1 signal port (1-16) 14. ESD jack 15. MN1 subboard
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3.7.2 Switches
The IDU 905 1E does not have a switch on its front panel, whereas the IDU 905 2E has two
ODU power switches on its front panel.
Table 3-13ODU power switches on the front panel of the IDU 905 2E
Name Description Remarks
ODU1 ODU power switch 1 The ODU power switches
are equipped with lockup
devices. Before turning on
or turning off a switch, pull
the switch lever slightly
outwards. If the switch is set
to position "O," the circuit is
open. If the switch is set to
position "I," the circuit is
closed.
ODU2 ODU power switch 2
3.7.3 Indicators
Indicators visually communicate the operating status of equipment.
Table 3-14Status explanation for indicators on the IDU 905 1E
Indicator State Meaning
STAT Blinks on (red) and off at
100 ms intervals
The boot read-only memory (ROM)
self-check has failed during the power-
on or resetting process of the
equipment.
Blinks on (green) and off
at 100 ms intervals
Data is being written into the flash
memory, or software is being loaded
during the power-on or resetting
process of the equipment.
Blinks on (green) and off
at 300 ms intervals
Software is in the BIOS boot state
during the power-on or resettingprocess of the equipment.
On (green) l The upper-layer software is being
initialized during the power-on or
resetting process of the equipment.
l The IDU is working correctly.
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Indicator State Meaning
On (red) l The memory self-check has failed
or loading the upper-layer software
has failed during the power-on or
resetting process of the equipment.
l The logic file or upper-layer
software was lost during the
operation of the equipment.
l The IDU or ODU has a hardware
fault.
Off The IDU is not working or powered on,
or an IDU is not created on the NMS.
SRV On (green) The system is working properly.
On (red) A critical or major alarm is being
reported.
On (yellow) A minor or remote alarm is being
reported.
PWRA On (green) There is power input from the first -48
V power port.
Off There is no power input from the first
-48 V power port.
PWRB On (green) There is power input from the second
-48 V power port.
Off There is no power input from the
second -48 V power port.
USB Blinks (red) The Universal Serial Bus (USB) flash
drive is online but faulty, or the NE
does not support the USB flash drive.
Blinks on (yellow) and off
at 300 ms intervals
Data is being backed up to or recovered
from the USB flash drive.
On (red) Backing up data to or recovering data
from the USB flash drive has failed.
On (green) l A USB flash drive is online.
l Backing up or recovering data is
complete.
Off The USB flash drive is offline or the
NE cannot identify the USB flash drive.
L/A5 On (green) Port GE5 is connected correctly but is
not receiving or transmitting data.
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Indicator State Meaning
Blinks (yellow) Port GE5 is receiving or transmitting
data.
Off Port GE5 is not connected or isincorrectly connected.
L/A6 On (green) Port GE6 is connected correctly but is
not receiving or transmitting data.
Blinks (yellow) Port GE6 is receiving or transmitting
data.
Off Port GE6 is not connected or is
incorrectly connected.
L/A7 On (green) Port GE7 is connected correctly but is
not receiving or transmitting data.
NOTE
Port GE7 corresponds to port COMBO1.
Blinks (yellow) Port GE7 is receiving or transmitting
data.
Off Port GE7 is not connected or is
incorrectly connected.
L/A8 On (green) Port GE8 is connected correctly but is
not receiving or transmitting data.
NOTEPort GE8 corresponds to port COMBO2.
Blinks (yellow) Port GE8 is receiving or transmitting
data.
Off Port GE8 is not connected or is
incorrectly connected.
LOS1 On (red) The first STM-1 port reports the
R_LOS alarm.
Off The first STM-1 port does not report
the R_LOS alarm.
LOS2 On (red) The second STM-1 port reports the
R_LOS alarm.
Off The second STM-1 port does not report
the R_LOS alarm.
LINK On (green) The microwave link is normal.
On (red) The microwave link is faulty.
Blinks on (yellow) and off
at 300 ms intervals
The antenna is not aligned.
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Indicator State Meaning
Off l The ODU is offline.
l the logical board is not configured
for the ODU connected to ODUport.
ACT On (green) l In a 1+1 protected system, the
microwave link is working as the
main link.
l In an unprotected system, the
microwave link has been activated.
Off l In a 1+1 protected system, the
microwave link is working as the
standby link.
l In an unprotected system, thelogical board is not added for the
ODU connected to ODU port.
STAT (on the MN1
subboard)
On (green) The MN1E subboard is working
properly.
On (red) The MN1 subboard has a hardware
fault.
Off The MN1 subboard is not working or
powered on, or an MN1 subboard is not
created on the NMS.
SRV (on the MN1
subboard)
On (green) Services are normal.
On (red) A critical or major alarm is being
reported.
On (yellow) A minor or remote alarm is being
reported.
Off No service is configured.
Table 3-15Status explanation for indicators on the IDU 905 2E
Indicator State Meaning
STAT Blinks on (red) and off at
100 ms intervals
The boot ROM self-check has failed
during the power-on or resetting
process of the equipment.
Blinks on (green) and off
at 100 ms intervals
Data is being written into the flash
memory, or software is being loaded
during the power-on or resetting
process of the equipment.
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Indicator State Meaning
Blinks on (green) and off
at 300 ms intervals
Software is in the BIOS boot state
during the power-on or resetting
process of the equipment.
On (green) l The upper-layer software is being
initialized during the power-on or
resetting process of the equipment.
l The IDU is working correctly.
On (red) l The memory self-check has failed
or loading the upper-layer software
has failed during the power-on or
resetting process of the equipment.
l The logic file or upper-layer
software was lost during theoperation of the equipment.
l The IDU or ODU has a hardware
fault.
Off The IDU is not working or powered on,
or an IDU is not created on the NMS.
SRV On (green) The system is working properly.
On (red) A critical or major alarm is being
reported.
On (yellow) A minor or remote alarm is beingreported.
PWRA On (green) There is power input from the first -48
V power port.
Off There i