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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]

Issue 04 (2015-12-30) Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltd.

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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.


which, if not avoided, may result in minor

or moderate injury.


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.


Boldface Buttons, menus, parameters, tabs, window, and dialog titles

are in boldface. For example, click OK.





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> 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.


This document is the third issue for V100R007C10.

Update Description



This document is the second issue for V100R007C10.

Update Description



This document is the first issue for V100R007C10.





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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


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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


IDU Hardware Description Contents



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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.


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.


l Boards pluggable.

l Integrated service ports on system control,

switching, and timing boards.

l One or two IF boards.


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.


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


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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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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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.


IDU Hardware Description 3 IDU 905 Overview



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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.



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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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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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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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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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


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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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


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)


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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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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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


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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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


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


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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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


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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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


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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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


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


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


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.


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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On (red) l The memory self-check has failed

or loading the upper-layer software

has failed during the power-on or


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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Blinks (yellow) Port GE5 is receiving or transmitting

data.

Off Port GE5 is not connected or isincorrectly connected.




data.

Off Port GE6 is not connected or is

incorrectly connected.



NOTE

Port GE7 corresponds to port COMBO1.


data.





NOTEPort GE8 corresponds to port COMBO2.


data.



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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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.


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


STAT Blinks on (red) and off at

100 ms intervals

The boot ROM self-check has failed




at 100 ms intervals

Data is being written into the flash

memory, or software is being loaded







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at 300 ms intervals

Software is in the BIOS boot state



On (green) l The upper-layer software is being

initialized during the power-on or


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


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.


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

rtn 905 1e&2e v100r007c10 idu hardware description 04

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