rtn 310 v100r001c01 product description 02

OptiX RTN 310 Radio Transmission SystemV100R001C01

Product Description

Issue 02Date 2012-12-30

HUAWEI TECHNOLOGIES CO., LTD.

Copyright Huawei Technologies Co., Ltd. 2012. All rights reserved.No part of this document may be reproduced or transmitted in any form or by any means without prior writtenconsent 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. NoticeThe purchased products, services and features are stipulated by the contract made between Huawei and thecustomer. 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 representationsof any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in thepreparation of this document to ensure accuracy of the contents, but all statements, information, andrecommendations in this document do not constitute a warranty of any kind, express or implied. Huawei Technologies Co., Ltd.Address: Huawei Industrial Base

Bantian, LonggangShenzhen 518129People's Republic of China

Website: http://www.huawei.comEmail: [email protected]

Issue 02 (2012-12-30) Huawei Proprietary and ConfidentialCopyright Huawei Technologies Co., Ltd.

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About This Document

Related VersionsThe following table lists the product versions related to this document.

Product Name VersionOptiX RTN 310 V100R001C01iManager U2000 V100R008C00

Intended AudienceThis document is intended for:l Network planning engineerl Hardware installation engineerl Installation and commissioning engineerl Field maintenance engineerl Data configuration engineerl System maintenance engineerFamiliarity with the basic knowledge related to digital microwave communication technologywill help you apply the information in this document.

Symbol ConventionsThe symbols that may be found in this document are defined as follows.

Symbol Description

Alerts you to a high risk hazard that could, ifnot avoided, result in serious injury or death.

OptiX RTN 310 Radio Transmission SystemProduct Description About This Document


ii

Symbol Description

Alerts you to a medium or low risk hazard thatcould, if not avoided, result in moderate orminor injury.

Alerts you to a potentially hazardous situationthat could, if not avoided, result in equipmentdamage, data loss, performance deterioration,or unanticipated results.

Provides a tip that may help you solve aproblem or save time.

Provides additional information to emphasizeor supplement important points in the maintext.

General ConventionsThe general conventions that may be found in this document are defined as follows.

Convention DescriptionTimes 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.

Change HistoryChanges between document issues are cumulative. The latest document issue contains all thechanges made in earlier issues.

Issue 02 (2012-12-30)This issue is the second issue for the product version V100R001C01.The following table describes the changes in this issue.



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Change Description7.1 Outdoor Power Injector Modified description of outdoor power

injectors (PIs).Entire document Resolved known issues.

Issue 01 (2012-10-30)This issue is the first release for the product version V100R001C01.



iv

Contents

About This Document.....................................................................................................................ii1 Product Introduction.....................................................................................................................1

1.1 Network Application..........................................................................................................................................21.2 Basic Features.....................................................................................................................................................31.3 Site Configurations.............................................................................................................................................5

1.3.1 1+0 Sites....................................................................................................................................................51.3.2 2+0 Sites....................................................................................................................................................71.3.3 1+1 Sites....................................................................................................................................................81.3.4 XPIC Sites...............................................................................................................................................101.3.5 Multi-direction Sites................................................................................................................................12

2 Functions and Features...............................................................................................................152.1 Capacities..........................................................................................................................................................172.2 Adaptive Modulation........................................................................................................................................172.3 Cross-Polarization Interference Cancellation...................................................................................................192.4 Automatic Transmit Power Control.................................................................................................................192.5 Power over Ethernet.........................................................................................................................................202.6 Ethernet Service Processing Capability............................................................................................................222.7 QoS...................................................................................................................................................................242.8 Clock Features..................................................................................................................................................252.9 Protection Capabilities......................................................................................................................................262.10 Network Management....................................................................................................................................262.11 Zero Footprint Installation..............................................................................................................................272.12 Configuration-Free Deployment.....................................................................................................................272.13 Easy Maintenance...........................................................................................................................................29

2.13.1 Equipment-level OAM..........................................................................................................................292.13.2 Packet OAM (TP-Assist).......................................................................................................................31

2.14 Security Management.....................................................................................................................................322.15 Energy Saving.................................................................................................................................................352.16 Environmental Protection...............................................................................................................................35

3 Product Structure.........................................................................................................................363.1 System Architecture.........................................................................................................................................373.2 Service Signal Processing Flow.......................................................................................................................39

OptiX RTN 310 Radio Transmission SystemProduct Description Contents


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3.3 Ports and Indicators..........................................................................................................................................413.3.1 Ports.........................................................................................................................................................413.3.2 Indicators.................................................................................................................................................47

3.4 Labels................................................................................................................................................................494 Networking and Applications..................................................................................................53

4.1 Independent Networking..................................................................................................................................544.1.1 Chain Networks.......................................................................................................................................544.1.2 Ring Networks.........................................................................................................................................54

4.2 Networking with the OptiX RTN 900..............................................................................................................555 Network Management System..................................................................................................57

5.1 Network Management Solutions......................................................................................................................585.2 Web LCT..........................................................................................................................................................595.3 U2000...............................................................................................................................................................60

6 Technical Specifications.............................................................................................................636.1 RF Performance................................................................................................................................................64

6.1.1 Radio Working Modes.............................................................................................................................646.1.2 Frequency Band.......................................................................................................................................696.1.3 Receiver Sensitivity.................................................................................................................................716.1.4 Distortion Sensitivity...............................................................................................................................746.1.5 Transceiver Performance.........................................................................................................................746.1.6 Baseband Signal Processing Performance of the Modem.......................................................................76

6.2 Predicted Reliability.........................................................................................................................................766.2.1 Predicted Equipment Reliability..............................................................................................................776.2.2 Predicted Link Reliability........................................................................................................................77

6.3 Ethernet Port Performance................................................................................................................................776.4 Clock Timing and Synchronization Performance............................................................................................786.5 Integrated System Performance........................................................................................................................79

7 Accessories....................................................................................................................................817.1 Outdoor Power Injector....................................................................................................................................82

7.1.1 Functions and Features............................................................................................................................827.1.2 Ports and Indicators.................................................................................................................................827.1.3 PI Labels..................................................................................................................................................877.1.4 Technical Specifications..........................................................................................................................90

7.2 Hybrid Coupler.................................................................................................................................................917.2.1 Types.......................................................................................................................................................917.2.2 Functions and Features............................................................................................................................927.2.3 Ports.........................................................................................................................................................927.2.4 Labels.......................................................................................................................................................937.2.5 Technical Specifications..........................................................................................................................95

7.3 OMT.................................................................................................................................................................967.3.1 Functions and Features............................................................................................................................97



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7.3.2 Ports.........................................................................................................................................................977.3.3 Technical Specifications..........................................................................................................................98

7.4 Extra Mounting Components............................................................................................................................997.4.1 Mounting Brackets..................................................................................................................................997.4.2 Flexible Waveguides.............................................................................................................................100

7.5 Antennas.........................................................................................................................................................1027.5.1 Types.....................................................................................................................................................1027.5.2 Functions and Features..........................................................................................................................1047.5.3 Working Principles................................................................................................................................1057.5.4 Ports.......................................................................................................................................................1067.5.5 Antenna Diameters................................................................................................................................1077.5.6 Technical Specifications........................................................................................................................108

7.6 Antenna Adapters...........................................................................................................................................1087.7 USB Flash Drives...........................................................................................................................................111

8 Cables...........................................................................................................................................1138.1 OptiX RTN 310 Power Cables.......................................................................................................................1158.2 PI Power Cables..............................................................................................................................................1158.3 P&E Cables.....................................................................................................................................................1168.4 OptiX RTN 310 PGND Cables......................................................................................................................1198.5 PI PGND Cables.............................................................................................................................................1208.6 XPIC Cables...................................................................................................................................................1208.7 RSSI Cables....................................................................................................................................................1218.8 Optical Fibers.................................................................................................................................................1218.9 Outdoor Network Cables................................................................................................................................122

A Appendix....................................................................................................................................126A.1 Port Loopbacks..............................................................................................................................................127A.2 Compliance Standards...................................................................................................................................127

A.2.1 ITU-R Standards...................................................................................................................................127A.2.2 ITU-T Standards...................................................................................................................................128A.2.3 ETSI Standards.....................................................................................................................................129A.2.4 CEPT Standards....................................................................................................................................131A.2.5 IEC Standards.......................................................................................................................................131A.2.6 IETF Standards.....................................................................................................................................133A.2.7 IEEE Standards.....................................................................................................................................134A.2.8 Other Standards....................................................................................................................................134

B Glossary......................................................................................................................................136



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1 Product IntroductionAbout This Chapter

OptiX RTN 310 is a full-outdoor product in the OptiX RTN radio transmission system series.

1.1 Network ApplicationOptiX RTN 310 facilities terminal access to mobile telecommunications networks or privatenetworks. It provides a cost-effective solution for the terminal networks of massive micro basestations.1.2 Basic FeaturesOptiX RTN 310 provides radio transmission channels for native Ethernet services.1.3 Site ConfigurationsOptiX RTN 310s, which can be cascaded, are not only able to form 1+0 sites, but also 2+0, crosspolarization interference cancellation (XPIC), 1+1, and multi-direction sites.

OptiX RTN 310 Radio Transmission SystemProduct Description 1 Product Introduction


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1.1 Network ApplicationOptiX RTN 310 facilities terminal access to mobile telecommunications networks or privatenetworks. It provides a cost-effective solution for the terminal networks of massive micro basestations.OptiX RTN 310 is a highly integrated full-outdoor radio transmission product (FO for short).All its modules are integrated into an outdoor unit that supports zero-footprint installation,providing carriers with cost-effective, full-outdoor radio solutions.OptiX RTN 310 can independently form chain or ring backhaul networks for a variety of newIP base stations in either new or legacy networks. It supports 2048QAM modulation and crosspolarization interference cancellation (XPIC), which enable it to provide high-bandwidthbackhaul links for large-capacity NodeBs and eNodeBs. See Figure 1-1.OptiX RTN 310 can work with OptiX RTN 900 series to provide more functions and to leveragelegacy radio equipment. The following is an example of how the two series can be used inconjunction:l Function as a multi-direction convergence nodel Transmit time division multiplexing (TDM) services through circuit emulation service

pseudo wires (CES PWs)l Provide 1+1 hot standby (HSB), 1+1 frequency diversity (FD), or 1+1 space diversity

(SD) protectionSee Figure 1-2.

Figure 1-1 Independent networking

NodeB 2 RNC

Local backhaul network

NodeB 1

NodeB 3

XPIC cable XPIC cableGE GE

GEGE

GE



2

Figure 1-2 Networking with OptiX RTN 900s

Local network

NodeB FE/GE

NodeB FE/GE

CES E1E1

BTS BSC

RNC

OptiX RTN 310

1+1 cascade

cable

1+1 cascade

cable

1+1

NodeB

OptiX RTN 900

XPIC cable

XPIC

GE GEXPIC cable

1.2 Basic FeaturesOptiX RTN 310 provides radio transmission channels for native Ethernet services.

Table 1-1 Basic featuresItem DescriptionDimensions (H x W x D) 290 mm x 265 mm x 98 mmNumber of radio directions 1Service ports Two GE service portsOperating frequency band l 13 GHz

l 15 GHzl 18 GHzl 23 GHzl 38 GHz



3

Item DescriptionRF configuration modes l 1+0 configuration

l 2+0 configurationl 1+1 configurationl Cross polarization interference

cancellation (XPIC) configurationl Multi-direction configurationNOTEl In XPIC, 1+1 or 2+0 mode, two OptiX RTN

310s are required for each site.l In multi-direction mode, multiple OptiX RTN

310s are cascaded or network with OptiX RTN900s.

Power supplying modes l Power over Ethernetl Power over a dedicated DC power portNOTEl Power over Ethernet applies to a maximum of

100 meters.l Power over a dedicated DC power port applies

to a maximum of 300 meters.

Figure 1-3 Appearance of OptiX RTN 310

Front side

Rear sideH

W D



4

1.3 Site ConfigurationsOptiX RTN 310s, which can be cascaded, are not only able to form 1+0 sites, but also 2+0, crosspolarization interference cancellation (XPIC), 1+1, and multi-direction sites.

1.3.1 1+0 SitesA 1+0 site provides a one-direction working microwave link.In 1+0 mode, one single-polarized antenna is used. Depending on antenna specifications, anOptiX RTN 310 can be directly mounted on an antenna or connected to an antenna usingaccessories (split mounting).

Figure 1-4 Typical configurations at a 1+0 site (direct mounting)

GECOMBO

P&EPWR

To NodeB

P&E cable Power cable (optional)

To a power supply device

Fiber

To a power injector

USB/RSSI/NMS



5

Figure 1-5 Typical configurations at a 1+0 site (split mounting)

To NodeB

GECOMBO

P&EPWR

P&E cable

To a power injector

Power cable (optional)

USB/RSSI/NMS

To a power supply device



6

1.3.2 2+0 SitesA 2+0 site provides two one-direction unprotected microwave links.At a 2+0 site, two OptiX RTN 310s are installed on a hybrid coupler. A hybrid coupler can bedirectly mounted on an antenna or connected to an antenna using accessories (split mounting),depending on antenna specifications. Generally, the two OptiX RTN 310s are cascaded usinggigabit Ethernet (GE) optical ports for physical link aggregation (PLA) configuration.

Figure 1-6 Typical configurations at a 2+0 site (direct mounting)

GECOMBO

P&EPWR

USB/RSSI/NMS GECOMBO

P&EPWR

USB/RSSI/NMS

1 2

12

To a power injector

To a power injector

Fiber

3Hybrid coupler



7

Figure 1-7 Typical configurations at a 2+0 site (split mounting)

GECOMBO

P&EPWR

GECOMBO

P&EPWR

USB/RSSI/NMS

1 2

12

To a power injector

Fiber

To a power injector

USB/RSSI/NMS

3Hybrid coupler

1.3.3 1+1 SitesA 1+1 site provides a microwave link protection system that comprises one main microwavelink and one standby microwave link in the same direction. Depending on configurations, a 1+1 site can provide 1+1 hot standby (HSB), 1+1 frequency diversity (FD), or 1+1 space diversity(SD) protection for its microwave links.For a 1+1 site configured with 1+1 HSB or 1+1 FD protection, two OptiX RTN 310s are installedon a hybrid coupler. Depending on antenna specifications, the hybrid coupler can be directlymounted on an antenna or connected to an antenna using accessories (split mounting). For a 1+1 site configured with 1+1 SD protection, two antennas are used. Depending on antennaspecifications, an OptiX RTN 310 can be directly mounted on an antenna or connected to anantenna using accessories.Two OptiX RTN 310s at a 1+1 site must be cascaded using their 1+1 cascade ports, and workwith an OptiX RTN 900 IDU or an LACP-supporting UNI-side device to implement NE-levelprotection using Link Aggregation Control Protocol (LACP). When working with an OptiX



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RTN 900 IDU, the OptiX RTN 310s can connect to the power-over-Ethernet ports of an EG4Pboard on the IDU using P&E cables, which carry both power signals and Ethernet service signals.Figure 1-8 and Figure 1-9 use 1+1 HSB/FD as an example to illustrate typical configurationsat a 1+1 site.

Figure 1-8 Typical configuration at a 1+1 site (1+1 HSB/FD, direct mounting)

GECOMBO

P&EPWR


P&EPWR

USB/RSSI/NMS

1 21

2

P&E cableP&E cable

1+1 cascade cable

Hybrid coupler3

EG4P

STAT L/A

1

OUT2/IN2

SRV

L/A2

L/A3

L/A4

P1 P2

OUT1/IN1 3/P1 4/P11 2

4/P2

EG4P

STAT L/A

1

OUT2/IN2

SRV

L/A2

L/A3

L/A4

P1 P2

OUT1/IN1 3/P1 4/P11 2

EG4P

STAT L/A

1

OUT2/IN2

SRV

L/A2

L/A3

L/A4

P1 P2

OUT1/IN1 3/P1 4/P11 2

3/P14/P23/P1



9

Figure 1-9 Typical configuration at a 1+1 site (1+1 HSB/FD, split mounting)

GECOMBO

P&EPWR


P&EPWR

USB/RSSI/NMS

1 2

P&E cableP&E cable

1+1 cascading cable

EG4P

STAT L/A

1

OUT2/IN2

SRV

L/A2

L/A3

L/A4

P1 P2

OUT1/IN1 3/P1 4/P11 2

4/P2

EG4P

STAT L/A

1

OUT2/IN2

SRV

L/A2

L/A3

L/A4

P1 P2

OUT1/IN1 3/P1 4/P11 2

EG4P

STAT L/A

1

OUT2/IN2

SRV

L/A2

L/A3

L/A4

P1 P2

OUT1/IN1 3/P1 4/P11 2

3/P14/P23/P1

12

3Hybrid coupler

1.3.4 XPIC SitesCross polarization interference cancellation (XPIC) sites are special 2+0 sites. The twomicrowave links provided by an XPIC site operate at the same frequency, but their polarizationdirections are orthogonal. Any signal interference between the two microwave links isautomatically canceled by the XPIC function.At an XPIC site, two OptiX RTN 310s are installed on an orthogonal mode transducer (OMT).The OMT can be directly mounted on an antenna or connected to an antenna using accessories(split mounting), depending on antenna specifications. Generally, the two OptiX RTN 310s are



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cascaded using gigabit Ethernet (GE) optical ports for physical link aggregation (PLA)configuration.

Figure 1-10 Typical configurations at an XPIC site (direct mounting)

GECOMBO

P&EPWR


P&EPWR

USB/RSSI/NMS

1 21

2

P&E cable

To a power injector

P&E cable

To a power injector

XPIC cable

OMT3

Fiber



11

Figure 1-11 Typical configurations at an XPIC site (split mounting)

2

1

GECOMBO

P&EPWR


P&EPWR

USB/RSSI/NMS

1 2

To a power injector

P&E cable

P&E cable

To a power injector

XPIC cable

Fiber

1.3.5 Multi-direction SitesA multi-direction site provides multi-direction microwave links.Multiple OptiX RTN 310s are cascaded using GE optical ports. Generally, multiple OptiX RTN310s are cascaded for 2x(1+0) configuration. At a site with 2x(1+0) configuration, two OptiXRTN 310s are connected back-to-back. They can independently perform service switching andscheduling with the help of built-in switching units.



12

Figure 1-12 Configurations at a site with 2x(1+0) configuration

1

2

GECOMBO

P&EPWRUSB/RSSI/NMS GE

COMBOP&E

PWRUSB/RSSI/NMS

1 2

P&E cable P&E cable

To a power injector To a power injector

Fiber

When multiple OptiX RTN 310s work with an OptiX RTN 900 IDU to form a multi-directionsite, the maximum number of radio directions is equal to the number supported by the IDU.During installation, an OptiX RTN 310 can connect to the power-over-Ethernet port of an EG4Pboard using a P&E cable, which carries both power signals and Ethernet service signals.



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Figure 1-13 Typical configurations at a multi-direction site (OptiX RTN 310s working withRTN 900)

EG4P

STAT L/A

1

OUT2/IN2

SRV

L/A2

L/A3

L/A4

P1 P2

OUT1/IN1 3/P1 4/P11 2

P&E

4/P2

EG4P

STAT L/A

1

OUT2/IN2

SRV

L/A2

L/A3

L/A4

P1 P2

OUT1/IN1 3/P1 4/P11 2

EG4P

STAT L/A

1

OUT2/IN2

SRV

L/A2

L/A3

L/A4

P1 P2

OUT1/IN1 3/P1 4/P11 2

P&EP&E

3/P1

21 3

P&E cable P&E cable P&E cable

1

2

3

4/P23/P1



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2 Functions and FeaturesAbout This Chapter

OptiX RTN 310 provides a variety of functions and features. It provides high-quality high-efficient microwave links for transmitting Ethernet service from base stations.

2.1 CapacitiesThis section provides the Ethernet service switching capacity and air interface capacity of OptiXRTN 310.2.2 Adaptive ModulationAdaptive modulation (AM) technology automatically adjusts the modulation scheme based onchannel quality.2.3 Cross-Polarization Interference CancellationCross-polarization interference cancellation (XPIC) technology is used together with co-channeldual-polarization (CCDP) to double the microwave link capacity over the same channel.2.4 Automatic Transmit Power ControlAutomatic transmit power control (ATPC) is a method that uses received signal level (RSL) ofthe receiver to adjust transmit power within the ATPC control range. This feature reducesinterference to neighboring systems and residual bit error rate (BER).2.5 Power over EthernetOptiX RTN 310 supports power over Ethernet (PoE) that can carry -48 V power signals, alongwith GE service signals, over Ethernet cables.2.6 Ethernet Service Processing CapabilityOptiX RTN 310 can process Native Ethernet services.2.7 QoSOptiX RTN 310 supports quality of service (QoS), including simple traffic classification, queuescheduling, and traffic shaping.2.8 Clock FeaturesOptiX RTN 310's clock features meet clock transmission requirements of mobilecommunications networks and offer a wide selection of clock protection mechanisms.2.9 Protection CapabilitiesOptiX RTN 310 provides protection schemes for microwave links and Ethernet networks.

OptiX RTN 310 Radio Transmission SystemProduct Description 2 Functions and Features


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2.10 Network ManagementOptiX RTN 310 supports multiple network management modes and provides comprehensivemanagement information exchange solutions.2.11 Zero Footprint InstallationOptiX RTN 310 supports zero footprint installation.2.12 Configuration-Free DeploymentOptiX RTN 310 can be quickly deployed and commissioned using a USB flash drive.2.13 Easy MaintenanceOptiX RTN 310 adopts easy-to-manage and easy-to-maintain architectures in hardware andsoftware design, and provides a variety of maintenance methods.2.14 Security ManagementOptiX RTN 310 works with its network management system (NMS) to prevent unauthorizedlogins and operations, ensuring equipment management security.2.15 Energy SavingOptiX RTN 310 reduces the amount of energy consumed by using:2.16 Environmental ProtectionOptiX RTN 310 is designed to meet or exceed environmental protection requirements. Theproduct complies with restriction of hazardous substances (RoHS) and waste from electrical andelectronic equipment (WEEE) directives.



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2.1 CapacitiesThis section provides the Ethernet service switching capacity and air interface capacity of OptiXRTN 310.

Ethernet Service Switching CapacityOptiX RTN 310 with its built-in Ethernet switching unit has an Ethernet service switchingcapacity of 3 Gbit/s.

Air Interface CapacityOptiX RTN 310 supports a maximum air-interface Ethernet throughput higher than 600 Mbit/s.The XPIC function nearly doubles the service capacity of a radio channel without changing thechannel spacing.OptiX RTN 310 supports Ethernet frame header compression at air interfaces. The equivalentthroughput of Ethernet services at air interfaces can reach up to 1 Gbit/s.

NOTE6.1.1 Radio Working Modes provides air interface capacities in various working modes.

2.2 Adaptive ModulationAdaptive modulation (AM) technology automatically adjusts the modulation scheme based onchannel quality.When AM technology is enabled and the same channel spacing is used, the available radioservice bandwidth varies according to the modulation scheme: the higher the modulationefficiency, the higher the bandwidth of the transmitted services. With quality of service (QoS)technology, packet services are groomed to queues with different priorities. Services in differentqueues are then transmitted to the microwave port after the queue-scheduling algorithm has beenrun. The service capacity varies according to the modulation scheme regardless of channelconditions.l When channel conditions are favorable (such as on sunny days), the equipment uses a

higher-order modulation scheme to transmit more user services. This improvestransmission efficiency and spectrum utilization of the system.

l When channel conditions are unfavorable (such as on stormy or foggy days), the equipmentuses a lower-order modulation scheme to ensure that higher-priority services aretransmitted first. If some lower-priority queues become congested due to a lack of availablebandwidth, some or all interfaces in these queues are discarded. This method improves theanti-interference capabilities of a microwave link and ensures link availability for high-priority services.

Figure 2-1 shows how the modulation scheme shifts step by step according to weather changesand how modulation schemes affect service throughput and reliability. In this example, themodulation scheme of guaranteed AM capacity is QPSK Strong and the modulation scheme offull AM capacity is 256QAM.



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Figure 2-1 Adaptive modulation

256 QAM

128 QAM

64 QAM

16 QAM

QPSK

16 QAM strong

QPSK strong

32 QAM

99.999%

RSL Availability

99.998%

99.995%

99.99%

99.96%

99.92%

99.9%

99.5%

Time

High-priority service

Low-priority service

Low-priority service

QPSK16QAM

32QAM64QAM

128QAM256QAM 16QAM

32QAM64QAM

128QAM256QAM16QAM Strong

16QAM StrongQPSK Strong QPSK

The AM technology used by OptiX RTN 310 has the following features:l Uses QPSK Strong, QPSK, 16QAM Strong, 16QAM, 32QAM, 64QAM, 128QAM,

256QAM, 512QAM, 512QAM Light, 1024QAM, 1024QAM Light, and 2048QAMmodulation schemes. Compared with QPSK/16QAM, QPSK Strong/16QAM Strong, usingdifferent parameters in forward error correction (FEC) coding, has stronger error correctioncapability, and therefore has better receiver sensitivity. It has, however, less air interfacebandwidth. Compared with 512QAM/1024QAM, 512QAM Light/1024QAM Light, usingdifferent parameters in forward error correction (FEC) coding, has weaker error correctioncapability, and therefore has worse receiver sensitivity. It has, however, higher air interfacebandwidth.

l Can configure both the lowest-order modulation scheme (also called reference scheme ormodulation scheme of guaranteed AM capacity) and the highest-order modulation scheme(also called nominal scheme or modulation scheme of full AM capacity).

l Can switch modulation schemes without changing the transmit frequency, receivefrequency, or channel spacing.

l Switches modulation schemes step-by-step.



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l Features hitless switching. When the modulation scheme is downshifted, high-priorityservices are not affected while low-priority services are discarded. Switching is successfuleven when 100 dB/s channel fast fading occurs.

2.3 Cross-Polarization Interference CancellationCross-polarization interference cancellation (XPIC) technology is used together with co-channeldual-polarization (CCDP) to double the microwave link capacity over the same channel.CCDP transmission uses a horizontally polarized wave and a vertically polarized wave on asingle channel to transmit two channels of signals. Ideally, for CCDP transmission, there shouldbe no interference between the two orthogonal signals, even though they are of the samefrequency. In actual practice, despite the orthogonal nature of the two signals, interferencebetween the signals inevitably occurs due to cross-polarization discrimination (XPD) of theantenna and channel degradation. To eliminate this interference, XPIC technology is used toreceive signals horizontally and vertically. The signals in the two directions are then processedand the original signals are recovered from interfered signals. Figure 2-2 shows the functionalblock diagram of a scenario where XPIC is used together with CCDP.

Figure 2-2 CCDP channel configuration (with XPIC technology)

Service

V: vertical polarization directionH: horizontal polarization direction

Service signal

Service

Service

Service

H

f1

V XPIC signal

Cross interference

Cross interference

f1

One XPIC site requires two OptiX RTN 310s, with their COMBO ports connected by an XPICcable to transmit XPIC signals.

2.4 Automatic Transmit Power ControlAutomatic transmit power control (ATPC) is a method that uses received signal level (RSL) ofthe receiver to adjust transmit power within the ATPC control range. This feature reducesinterference to neighboring systems and residual bit error rate (BER).When ATPC is enabled:



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l If the RSL is 2 dB or more than 2 dB less than the value halfway between the upper andlower ATPC thresholds, the receiver instructs the transmitter to increase transmit power sothat the RSL does not deviate more than 2 dB from the halfway value.

l If the RSL is 2 dB or more than 2 dB greater than the value halfway between the upper andlower ATPC thresholds, the receiver instructs the transmitter to reduce transmit power sothat the RSL does not deviate more than 2 dB from the halfway value.

Figure 2-3 shows the relationship between the RSL and the transmit signal level (TSL).

Figure 2-3 Relationship between the RSL and the TSL

T

Up-fading

Down-fading2dB

TSL/RSL

TSL

RSL2dBValue halfway

between the ATPC upper and lower

thresholds

2.5 Power over EthernetOptiX RTN 310 supports power over Ethernet (PoE) that can carry -48 V power signals, alongwith GE service signals, over Ethernet cables.An OptiX RTN 310 works with a power injector (PI) or an OptiX RTN 900 IDU to implementpower over Ethernet through its P&E port.l One PI can power only one OptiX RTN 310. See Figure 2-4.



20

Figure 2-4 Working with a PI

Power injector

P&E port

GE signal-48 V

P&E portInjecting

NOTE

Besides power signals, network management signals can also be carried on the P&E cable thatconnects an OptiX RTN 310 to a PI, eliminating the need to climb up the tower for maintenance.

l An OptiX RTN 310 can work with the EG4P board, which supports power over Ethernet,on an OptiX RTN 900 IDU. An EG4P board can power a maximum of two OptiX RTN310s OptiX RTN 310. See Figure 2-5.

Figure 2-5 Working with the OptiX RTN 900

P&E port

EG4PCSHx

GE and -48 V signal

P&E port

OptiX RTN 900 IDU



21

2.6 Ethernet Service Processing CapabilityOptiX RTN 310 can process Native Ethernet services.

Table 2-1 Ethernet service processing capabilityItem DescriptionService port Two GE service ports

l The first GE port is a P&E electrical port oran optical port (SFP module).

l The second GE port is an optical port (SFPmodule).

Port attribute l The GE electrical port supports 10M full-duplex, 100M full-duplex, 1000M full-duplex, and auto-negotiation.

l The GE optical port supports 1000M full-duplex and auto-negotiation.

Ethernet service type l Ethernet line (E-Line) servicel Ethernet local area network (E-LAN) service

Range of maximum frame length 1518 bytes to 9600 bytesVLAN l Adds, deletes, and swaps VLAN tags that

comply with IEEE 802.1Q/P, and forwardspackets based on VLAN tags.

l Processes packets based on the port tagattribute (Tag/Hybrid/Access).

l The VLAN ID ranges from 1 to 4094.MAC address l The E-LAN service supports MAC address

self-learning in two learning modes: SVL andIVL.

l Blacklist MAC addresses can be filtered.l Static MAC address entries can be set.l The capacity of the MAC address table is 8 k

(including static and blacklist entries).l The MAC address aging time is configurable.



22

Item DescriptionLink aggregation group (LAG) l Applies to GE ports and microwave ports. The

master port in a LAG must be a microwaveport.

l Supports manual aggregation and staticaggregation.

l Supports load sharing and non-load sharing.l Supports the setting of the minimum number

of active links.Physical link aggregation (PLA) Allows Ethernet channels in microwave links

provided by two OptiX RTN 310s to form a PLAgroup.Being the Layer 1 LAG technology, PLAaggregates links and achieves load sharing overthese links based on physical-layer bandwidths.

Ethernet ring protection switching(ERPS)

Supports ITU-T G.8032-compliant ring networkprotection for Ethernet services.

Link-state pass through (LPT) Supports simple LPT. When a microwave link isfaulty, the related OptiX RTN 310 automaticallydisables the remote Ethernet port that is connectedto a user-to-network interface (UNI) device.

QoS Supports QoS. For details, see 2.7 QoS.Traffic control Supports IEEE 802.3x-compliant traffic control.ETH OAM l Supports IEEE 802.1ag- and IEEE 802.3ah-

compliant ETH OAM.l Supports ITU-T Y.1731-compliant packet

loss measurement, delay measurement, anddelay variation measurement.

Ethernet performance monitoring l Supports IETF RFC 2819-compliant remotenetwork monitoring (RMON).

l Supports measurement of real-time andhistorical traffic and bandwidth utilization forports.

Synchronous Ethernet Supported.



23

NOTE

l OptiX RTN 310 supports a maximum of 64 E-Line services. The supported E-Line services fall into thefollowing types:l Port-based E-Line servicesl Port+VLAN-based E-Line services

l OptiX RTN 310 supports only one E-LAN service. The supported E-LAN services fall into the followingtypes:l IEEE 802.1D bridge-based E-LAN servicesl IEEE 802.1Q bridge-based E-LAN services

2.7 QoSOptiX RTN 310 supports quality of service (QoS), including simple traffic classification, queuescheduling, and traffic shaping.

QoS Processing FlowQoS minimizes network delay and delay variations by properly allocating and monitoringnetwork resources, therefore guaranteeing quality of important services.Figure 2-6 shows how OptiX RTN 310 performs QoS processing for Ethernet services.

Figure 2-6 QoS processing

Forwarding

Queue scheduling

Simple Traffic classification

Ingress EgressPacket

switching

Mapping

Congestion avoidance

Buffer queueThreshold

DiffServ

Queue traffic shaping

Scheduling

Drop

...

......

Port traffic shaping

Token bucket

PIR

..................

............

............

...

CoS x

...

CoS z



24

QoS FeaturesTable 2-2 QoS features

Feature PerformanceSimple traffic classification (DiffServ) l Supports one DiffServ (DS) domain.

l Maps Ethernet services into different per-hopbehaviors (PHBs) based on the C-VLANpriority, IP DiffServ code point (DSCP), andMPLS experimental bits (EXP).

Congestion avoidance l Ethernet ports support tail drop.l Microwave ports support tail drop and

weighted random early detection (WRED).Queue scheduling l Each Ethernet port or microwave port supports

eight levels of priority scheduling.l Flexibly sets the queue-scheduling scheme for

each Ethernet port and microwave port. Thequeue scheduling modes include strict priority(SP), weighted round robin (WRR), and SP+WRR.

Traffic shaping l Supports traffic shaping for outgoing queuesand egress ports.

l Supports the setting of peak information rate(PIR) in a step of 64 kbit/s and peak burst size(PBS).

2.8 Clock FeaturesOptiX RTN 310's clock features meet clock transmission requirements of mobilecommunications networks and offer a wide selection of clock protection mechanisms.

Item DescriptionClock working mode l Tracing

l Free-runClock source l Microwave link clock

l Synchronous Ethernet clockSynchronization Status Message (SSM)protocol or extended SSM protocol

Supported. SSM information can betransmitted in the following modes:l Microwave linkl Synchronous Ethernet



25

Item DescriptionIEEE 1588v2 time synchronization Supports the following four modes:

l OCl TCl BCl TC+BC

2.9 Protection CapabilitiesOptiX RTN 310 provides protection schemes for microwave links and Ethernet networks.

Table 2-3 Protection schemesProtected Object Protection SchemeMicrowave link 1+1 hot standby (HSB), 1+1 frequency diversity (FD), or 1+1 space

diversity (SD), which provides microwave linklevel protection andNE-level protectionPhysical link aggregation (PLA), which provides microwave linklevel protection and NE-level protection

Ethernet network Link aggregation group (LAG) for Ethernet links and microwavelinksEthernet ring protection switching (ERPS) for Ethernet links andmicrowave links

2.10 Network ManagementOptiX RTN 310 supports multiple network management modes and provides comprehensivemanagement information exchange solutions.

Network Management ModesOptiX RTN 310 supports the following functions:l Uses the iManager U2000 Web LCT to manage one local NE or one remote NE on a per-

NE basis.l Uses the iManager U2000 to manage Huawei OptiX RTN NEs and Huawei optical

transmission products in a centralized manner. The iManager U2000 is also able to managetransport networks in a unified manner.

l Uses SNMP to query alarms, performance events, and some configuration data of OptiXRTN 310s on IP networks.



26

Network Management Information Exchange SolutionsTable 2-4 DCN information exchange schemes

Item SpecificationsDCN channel Data

communicationschannel (DCC)bytes

Three Huawei-defined DCC bytes in microwaveframesD1 to D3 bytes transmitted on 1+1 cascade ports

Networkmanagementsystem (NMS) port

One NMS port

InbandDCN

Microwave link

All inband DCN channels are marked by one VLANID. The bandwidth of each inband DCN channel isconfigurable.

GE port All inband DCN channels are marked by one VLANID. The bandwidth of each inband DCN channel isconfigurable.

Networkmanagementprotocol

HWECC protocol SupportedIP protocol Supported

2.11 Zero Footprint InstallationOptiX RTN 310 supports zero footprint installation.OptiX RTN 310 is compact and light, and supports power over Ethernet. It is a full outdoordevice that can be directly mounted onto a pole or the back of an antenna.OptiX RTN 310 can be directly mounted on an antenna or connected to an antenna usingaccessories (split mounting).

2.12 Configuration-Free DeploymentOptiX RTN 310 can be quickly deployed and commissioned using a USB flash drive.When deploying and commissioning an OptiX RTN 310 NE, you only need to insert a USBflash drive storing the NE's configuration data into the USB port. The NE then automaticallyimports data from the USB flash drive. You do not need to configure data onsite.



27

Figure 2-7 Deployment process

Start

Perform network planning.(network planners)

Obtain a blank USB flash drive.(software commissioning personnel)

Copy data to the USB flash drive.(software commissioning personnel)

Obtain the USB flash drive with data.(hardware installation personnel)

Insert the USB flash drive.(hardware installation personnel)

End

Table 2-5 Deployment proceduresProcedure DescriptionPerform networkplanning

Network planners work out network plans, which are archived in thenetwork management center (NMC).



28

Procedure DescriptionObtain a blankUSB flash drive

Software commissioning personnel obtain a blank USB flash drive,which can be reused, from warehouses.

Copy data to theUSB flash drive

Software commissioning personnel at the NMC need to make thefollowing preparations:l Convert planned network data into a script using a script generation

tool, and copy the script to the \script directory of the USB flashdrive.

l Upload the upgrade software on the USB flash drive if you need toupgrade the NE during the deployment.

l Create an authentication file for the USB flash drive using thenetwork management system (NMS), and copy the file to the rootdirectory of the USB flash drive.

Attach a label to the USB flash drive.Obtain the USBflash drive with thescript

Hardware installation personnel obtain the USB flash drive with thescripts from the customer' NMC. A USB flash drive contains the scriptfor only one NE.

Insert the USBflash drive

After installing the OptiX RTN 310, hardware installation personnelinsert the USB flash drive into the USB port. The NE then automaticallydownloads data.

2.13 Easy MaintenanceOptiX RTN 310 adopts easy-to-manage and easy-to-maintain architectures in hardware andsoftware design, and provides a variety of maintenance methods.

2.13.1 Equipment-level OAMOptiX RTN 310 provides a variety of operation, administration and maintenance (OAM)functions that effectively reduce equipment maintenance costs.Table 2-6 describes the OAM functions supported by OptiX RTN 310.



29

Table 2-6 Equipment-level OAM functionsFunction DescriptionManagement andmonitoring

l Supports unified management of microwave transmissionnetworks and optical transmission networks using the iManagerU2000, and end-to-end service creation and management.

l Reports a variety of alarms and performance events.l Supports remote monitoring (RMON) of performance events.l Measures real-time and historical traffic and bandwidth utilization

for ports.l Measures congestion-caused packet loss information for flows.l Queries equipment temperatures.l Monitors key radio transmission performance counters, such as

the microwave transmit power, received power, signal-to-noiseratio (SNR), and air-interface bit error rate (BER), and displaysthem graphically.

l Supports frequency scanning to help identify co-channelinterference and adjacent-channel interference.

l Collects one-click fault diagnosis information.l Supports the connection of the Web LCT to the equipment's

gigabit Ethernet (GE) port using a GE service cable or to thenetwork management system (NMS) port on a power injector (PI),eliminating the need to climb up towers during equipmentcommissioning or maintenance.

l Supports connectivity tests for P&E cables using the iManagerU2000.

Diagnosis tests l Supports pseudo random binary sequence (PRBS) tests atmicrowave ports.

l Simulates Ethernet meters to test the packet loss ratio, delay, andthroughput.

l Supports various loopback types at service ports and microwaveports.

Packet OAM l Supports IEEE 802.1ag- and IEEE 802.3ah-compliant ETH OAMfunctions.

l Supports ITU-T Y.1731-compliant packet loss measurement,delay measurement, and delay variation measurement.

l Supports loopback tests for Ethernet services.Databasemanagement

l Backs up and restores network element (NE) databases remotelyusing the iManager U2000.

l Backs up and loads NE data using universal serial bus (USB) flashdrives.



30

Function DescriptionSoftwaremanagement

l Supports remote loading of NE software and data using theiManager U2000 and provides a complete NE upgrade solution,allowing rapid upgrades of the entire network.

l Upgrades NE software using USB flash drives.l Supports the not-stop forwarding (NSF) function, which prevents

Ethernet services from being interrupted by warm NE softwareresets.

l Supports hot patches so that users can upgrade software withoutinterrupting services.

l Supports software version rollback so that original system servicesare restored despite software upgrade failures.

2.13.2 Packet OAM (TP-Assist)OptiX RTN 310 works with the iManager U2000 to allow hierarchy operation, administrationand maintenance (OAM) of packet services. Packet OAM supports end-to-end packet serviceconfiguration, acceptance tests, and fault locating, which simplify packet OAM.Table 2-7 describes the packet OAM functions supported by OptiX RTN 310.

Table 2-7 Packet OAM functions (TP-Assist)OAM Stage Function DescriptionEnd-to-endserviceconfiguration

End-to-end packetserviceconfiguration

l Supports end-to-end configuration of NativeEthernet line (E-Line) and Ethernet local areanetwork (E-LAN) services.

Automaticdeployment ofalarmmanagement

l Automatically configures end-to-end ETHOAM during Native Ethernet serviceconfiguration and supports connectivity testsand alarm reporting.

Acceptance test Serviceconnectivity test

l Supports one-click connectivity tests for NativeE-Line and E-LAN services.

Serviceperformance test

l Supports one-click tests on the packet loss ratio,delay, and delay variation of Native E-Line andE-LAN services.

l Simulates Ethernet meters to test the packet lossratio, delay, and throughput.

Fault locating Port monitoring l Reports alarms indicating Ethernet signal loss.l Reports alarms indicating Ethernet port auto-

negotiation failures (half-duplex alarms).



31

OAM Stage Function DescriptionService loopcheck

l Checks E-LAN service loops.l Automatically disables service ports involved

in a loop.Intelligent faultdiagnosis

l Checks the consistency of hardware, software,and configurations along a service path.

l Checks for zero traffic and congestion-causedpacket loss along a service path.

Performancemeasurement

l Measures real-time and historical performanceof ports.

Performancemonitoring

l Reports port bandwidth utilization threshold-crossing alarms.

l Reports zero-traffic alarms for ports.l Reports traffic threshold-crossing alarms for

ports.

2.14 Security ManagementOptiX RTN 310 works with its network management system (NMS) to prevent unauthorizedlogins and operations, ensuring equipment management security.

Overview of Hardware SecurityThe following hardware security measures are provided by OptiX RTN 310:l Microwave ports: The FEC encoding mode is adopted and the adaptive time-domain

equalizer for baseband signals is used. This enables the microwave ports to withstand stronginterference. An interceptor cannot restore the content in a data frame if coding details andservice configurations are not obtained.

l Modular design: Control units are separated from service units and service units areseparated from each other. In this manner, a fault on any unit can be properly isolated,minimizing the impact of the fault on other units in the system.

l CPU flow control: Data flow sent to the CPU for processing is classified and controlled toprevent the CPU from being attacked by a large number of packets. This ensures that theCPU operates properly under attacks.

l USB port control: The USB port is disabled when the USB port is not used, to avoid invalidaccess.

Overview of Software SecurityOptiX RTN 310 is positioned at the transport layer of a communications network. It provideshigh-capacity and high-reliability transparent transmission tunnels, and is practically hiddenfrom view. Therefore, the transmission tunnels are not easily exposed to external attacks.



32

OptiX RTN 310 processes two categories of data: O&M data and service data. The precedingdata is transmitted over independent paths and does not affect each other. This enables servicesrunning on OptiX RTN 310 to be processed on two planes:l Management planel Data planeThe management plane provides access to the required equipment and management functions,such as managing accounts and passwords, communication protocols, and alarm reporting.Security features on the management plane implement security access, integrated securitymanagement, and all-round security audits. The Secure Sockets Layer (SSL) features providesecurity access to the required equipment. The Remote Authentication Dial-In User Service(RADIUS) feature implements centralized security authentication for the equipment on theentire network. The Syslog feature implements offline storage of more security-related logs foraudits.The data plane processes the service data flow entering the equipment and forwards servicepackets according to the forwarding table. Security features on the data plane ensureconfidentiality and integration of user data by preventing malicious theft, modification, andremoval of user service packets. These features ensure stable and reliable operation of theforwarding plane by protecting forwarding entries against malicious attacks and falsification.The data plane provides:l User service separation methodsl Access control methodsl Methods for controlling and managing ingress and egress bandwidth of the equipment to

ensure reliable operation, such as flow control and quality of service (QoS).Table 2-8 lists the security functions provided by OptiX RTN 310.

Table 2-8 Security functionsPlane Function DescriptionManagement plane Account and password

managementManages and storesmaintenance accounts.

Local authentication andauthorization

Authenticates and authorizesaccounts.

RADIUS authentication andauthorization

Authenticates and authorizesremote accounts in acentralized manner to reducemaintenance costs.

Security log Records events related toaccount management.

Operation log Records non-queryoperations are recorded.

Syslog management Provides a standard solutionfor offline storage of logs.



33

Plane Function DescriptionTCP/IP attack defense Provides defense against

TCP/IP attacks, such as IPerror packets, InternetControl Message Protocol(ICMP) ping attacks and Joltattacks, and Dos attacks.

Access control list Provides access control listsbased on IP addresses andport IDs.

SSL/TLS encryptioncommunication

Uses the SSL3.0 and TLS1.0protocols to establish anencryption channel based ona security certificate.

Secure File Transfer Protocol(SFTP)

Provides SFTP services.

Open Shortest Path First(OSPF)

Uses the OSPFv2 protocolfor standard MD5authentication.

Network Time Protocol(NTP)

Uses the NTPv3 protocol forMD5 authentication andpermission control.

Simple NetworkManagement Protocol(SNMP)

Uses the SNMPv3 protocolfor authentication and dataencryption.

Data plane Flow control Controls traffic at ports.Broadcast packets aresuppressed. Unknownunicast packets and multicastpackets are discarded. QoS isused to limit the servicetraffic.

Discarding of incorrectpackets

Discards incorrect packets,such as an Ethernet packetshorter than 64 bytes.

Loop prevention Detects self-loops at serviceports and blocks self-loopedports.



34

Plane Function DescriptionAccess control of Layer 2services

Filters static MAC addressesin the static MAC addresstable, provides a blacklist,enables and disables theMAC address learningfunction, and filters packetsbased on trafficclassification.

Service separation Includes Layer 2 logicalseparation, split horizon, andphysical path separation.

2.15 Energy SavingOptiX RTN 310 reduces the amount of energy consumed by using:l Streamlined design with minimum componentsl High-efficiency power modulesl Low-power components

2.16 Environmental ProtectionOptiX RTN 310 is designed to meet or exceed environmental protection requirements. Theproduct complies with restriction of hazardous substances (RoHS) and waste from electrical andelectronic equipment (WEEE) directives.l OptiX RTN 310 complies with compulsory packing restrictions that limit the size of the

package containing the equipment and accessories to three times that of the equipmentdimensions.

l The product is designed for easy unpacking. In addition, all hazardous substances containedin the package can decompose quickly.

l Every plastic component that weighs over 25 g is labeled according to the standards of ISO11469 and ISO 1043-1 to ISO 1043-4. All components and packages of the equipment areprovided with standard labels for recycling.

l Plugs and connectors are easy to find and can be operated using standard tools.l All the accompanying materials (such as labels) are easy to remove. Certain types of

identifying information (such as silkscreens) are printed on the chassis.



35

3 Product StructureAbout This Chapter

This chapter describes the system architecture, service signal processing flow, external ports,and indicator status.

3.1 System ArchitectureAn OptiX RTN 310 has one physical board, which is displayed as SHXA2 on the networkmanagement system (NMS) and occupies logical slot 1.3.2 Service Signal Processing FlowThis section describes how the function units of OptiX RTN 310 process GE signals.3.3 Ports and IndicatorsOptiX RTN 310 has most of its ports and indicators on one side for easy cabling and monitoring.3.4 LabelsProduct nameplate labels, qualification card labels, electrostatic discharge (ESD) protectionlabels, radiation warning labels, grounding labels, high temperature warning labels, and othertypes of labels are affixed in their respective positions on the chassis. Adhere to any warningsor instructions on the labels when performing various tasks to avoid any personal injury ordamage to equipment.

OptiX RTN 310 Radio Transmission SystemProduct Description 3 Product Structure


36

3.1 System ArchitectureAn OptiX RTN 310 has one physical board, which is displayed as SHXA2 on the networkmanagement system (NMS) and occupies logical slot 1.The SHXA2 board is physically divided into multiple function units based on logical functions.

Block Diagram

Figure 3-1 Block diagram

USB port

System control unit

Power unit

Clock unitSupplies clock signals to other units

AntennaEthernet switching

unit

Ethernet access

unitGE signal

RF processing

unit

Clock signal

P&E signal

-48 V Supplies power to other units

PI-48 VFE/GE signal

SHXA2XPIC signal

MUX unit

Modem unit

Baseband processing unit

Control signal

RSSI portRSSI test level signal

NMS signal

NMS signal

OptiX RTN 310

NMS port

HSM signal

1+1 cascade signal

Function UnitsFunction Unit DescriptionEthernet access unit l Receives/Transmits Ethernet service

signals.l Converts serial Ethernet signals into

parallel Ethernet signals.l Performs frame delimitation, preamble

stripping, and cyclic redundancy checks(CRCs).

l Transmits power signals received fromthe P&E port to the power unit.



37

Function Unit DescriptionEthernet switching unit l Processes VLAN tags in Ethernet service

signals.l Performs quality of service (QoS)

processing for Ethernet frames.l Grooms services and processes protocols.

Baseband processing unit l The MUX unit maps/demaps servicesignals to/from microwave frame signals.

l The MUX unit extracts overhead bytesfrom microwave frames and transmits theoverhead bytes to the system control unit.

l If a frequency diversity (FD) or spacediversity (SD) protection group isconfigured, the MUX unit of the standbyNE sends hitless switch mode (HSM)service signals to the MUX unit of themain NE using the 1+1 cascade cable. TheMUX unit of the main NE selects signalswith better quality.

l The modem unit modulates anddemodulates digital signals.

l If a cross polarization interferencecancellation (XPIC) group is configured,the modem unit performs XPIC for IFsignals.

l The modem unit performs forward errorcorrection (FEC).

l The baseband processing unit performsconversion between analog and digitalsignals.

RF processing unit l Performs frequency conversion andpower amplification, and sends RF signalsto antennas in the transmit direction.

l Performs isolation, filtering, down-conversion, and power amplification forRF signals, and converts RF signals into140 MHz IF signals in the receivedirection.



38

Function Unit DescriptionSystem control unit l Controls and manages other units, and

collects alarms and performance eventsover the control bus.

l Processes network management messagesin data communications channels (DCCs).

l Reads data from a USB flash drivethrough its USB port for easy initialconfiguration, data backup, or softwareupgrade.

l If a 1+1 protection group is configured,the system control units of the main andstandby NEs exchange datacommunication network (DCN)information and 1+1 protection protocolinformation through the 1+1 cascadeports.

Clock unit l Extracts clock signals and provides themto other units.

l Receives and processes IEEE 1588v2protocol messages for timesynchronization.

l If a 1+1 protection group is configured,the standby NE synchronizes its clockwith that of the main NE through the 1+1cascade ports.

Power unit l Receives -48 V DC power signals.l Provides power signals to other units.

3.2 Service Signal Processing FlowThis section describes how the function units of OptiX RTN 310 process GE signals.

Figure 3-2 Signal processing flow

Ethernet access

unit

RF processing

unit

Ethernet switching

unit

FE/GE service

signal

Service bus

Modulated signal

RF signal

OptiX RTN 310

MUX unit

Modem unit

Baseband processing unitService bus



39

Table 3-1 Signal processing in the transmit directionStep

Function Unit Processing Flow

1 Ethernet access unit l Receives/Transmits Ethernet service signals.l Extracts Ethernet frames from FE/GE service signals.

2 Ethernet switchingunit

l Performs Layer 2 protocol processing and quality ofservice (QoS) processing for the Ethernet frames.

l Transmits processed FE/GE service signals to thebaseband processing unit.

3 Baseband processingunit

l Receives FE/GE service signals from the Ethernetswitching unit.

l Turns FE/GE service signals and microwave frameoverheads into microwave frames.

l Performs forward error correction (FEC) coding.l Selects a proper modulation scheme based on the current

channel quality.l Performs modulation and digital/analog conversion.l Transmits modulated signals to the RF processing unit.

4 RF processing unit l Performs up-conversion and power amplification toconvert the modulated signals into RF signals.

l Transmits the RF signals to the antenna through a flexiblewaveguide.

Table 3-2 Signal processing in the receive directionStep


1 RF processing unit l Isolates and filters RF signals.l Performs down-conversion and power amplification to

convert the RF signals into 140 MHz modulated signals.l Transmits the modulated signals to the baseband

processing unit.2 Baseband processing

unitl Receives modulated signals from the RF processing unit.l Performs analog/digital conversion.l Demodulates signals.l Performs FEC decoding.l Extracts overhead signals and Ethernet frames from

microwave frames.l Transmits the Ethernet frames to the Ethernet switching

unit.



40

Step


3 Ethernet switchingunit

l Receives Ethernet frames from the baseband processingunit.

l Processes the Ethernet frames based on serviceconfigurations and Layer 2 protocols.

l Transmits the Ethernet frames to the Ethernet access unit.4 Ethernet access unit Performs parallel/serial conversion and transmits the Ethernet

signals.

3.3 Ports and IndicatorsOptiX RTN 310 has most of its ports and indicators on one side for easy cabling and monitoring.

3.3.1 PortsAn OptiX RTN 310 has one GE port, one COMBO port, one P&E port, one USB port, RSSI/NMS port, and one antenna port (RSSI is short for received signal strength indicator and NMSfor network management system).

Port Positions

Figure 3-3 Port positions

1. GE port 2. COMBO port 3. P&E port 4. PWR port 5. USB/RSSI/NMS port 7. Antenna port

6. PGND ground point



41

Table 3-3 PortsNo. Port Description Connector Type Cable1 GE GE optical port Small form-factor

pluggable (SFP)optical module:supports1000BASE-SX,and 1000BASE-LX.

8.8 OpticalFibers

2 COMBO Composite port that can function as any of thefollowing ports through software setting:l Cross polarization interference

cancellation (XPIC) portl GE optical portl 1+1 cascade port

SFP modulel SFP electrical

module(provided byan XPIC cable)for an XPICport

l SFP opticalmodule for aGE optical port

l SFP opticalmodule for a 1+1 cascadeport

l XPIC port:8.6 XPICCables

l GE opticalport/1+1cascadeport: 8.8OpticalFibers

3 P&E Power over Ethernet port, which canconcurrently receive FE/GE electricalsignals, -48 V power signals, and NMSsignalsNOTE

You can select either the P&E port or the COMBOport to receive/transmit Ethernet services bysoftware configuration, because the COMBO portfunctioning as a GE optical port and the GEelectrical sub-port of the P&E port share oneservice channel.

P&E connector 8.3 P&ECables

4 PWR -48 V DC power port Waterproof powerconnector

8.1 OptiX RTN310 PowerCables



42

No. Port Description Connector Type Cable5 USB/RSSI/

NMSThree ports are available: USB port, RSSIport, and NMS port.l USB port: You can insert a USB flash

drive into the USB port to import initialconfiguration data, to back up NE data, orto upgrade software.

l RSSI port: You can obtain the receivedsignal level (RSL) of an OptiX RTN 310by testing the voltage at the RSSI portusing a multimeter.

l NMS port: The NMS port transmitsnetwork management signals, sharing anRJ45 connector with the RSSI port butusing different pins from the RSSI port.

USB port: USBconnectorRSSI port/NMSport: RJ45connector

-

6 PGND point - M5 screw 8.4 OptiX RTN310 PGNDCables

7 Antenna port l An antenna port connects to an antenna, ahybrid coupler, or a flexible waveguide.

l OptiX RTN 310 can adapt its polarizationdirection to the hybrid coupler or antenna.Earlier versions allow the polarizationdirection to be changed by rotating thevertical/horizontal polarizer.

l 153IEC-R120,which can beconnected to aPBR120 (usedat thefrequencyband 13 GHz)


l 153IEC-R220,which can beconnected to aPBR220 (usedat thefrequencyband 18 GHzor 23 GHz)


-



43

NOTE

l On the NMS, the Ethernet service port that the P&E and COMBO ports share is displayed as GE1, andthe GE optical port is displayed as GE2.

l Unused ports must be capped.

GE Optical PortA GE optical port receives/transmits Ethernet services using an SFP optical module.An SFP optical module provides one TX port and one RX port. For details, see Figure 3-4, inwhich TX represents the transmit port and RX represents the receive port.

Figure 3-4 Ports of an SFP optical module

TX RX

Table 3-4 lists the types of SFP optical modules that the GE optical port supports.

Table 3-4 SFP optical modules supported by the GE optical portPart Number Module Type Wavelength and

Transmission Distance34060321 1000BASE-SX 850 nm, 0.5 km34060290 1000BASE-LX 1310 nm, 10 km

COMBO PortA COMBO port is a composite port and can be configured as a GE optical port, a 1+1 cascadeport or an XPIC port.l If a COMBO port is configured as a GE optical port, it supports the same types of SFP

optical modules as the GE optical port, and the P&E port cannot receive Ethernetservices.

l If a COMBO port is configured as a 1+1 cascade port, it uses a 1000BASE-SX opticalmodule. Two OptiX RTN 310s can be configured as a 1+1 protection group by connectingtheir 1+1 cascade ports.

l If the COMBO port is configured as an XPIC port, two OptiX RTN 310s can be added intoan XPIC group after they are connected using an XPIC cable.

P&E PortA P&E port is a power-over-Ethernet port and can simultaneously receive GE electrical signals,-48 V power signals, and NMS signals. It is either connected to a power injector (PI) or an EG4Pboard on an OptiX RTN 900.A P&E port has 12 pins, as shown in Figure 3-5.



44

Figure 3-5 Front view of the P&E port

Table 3-5 Pin assignments for the P&E portPin No. Signal Function1 BIDA+/BGND Bidirectional data wire A (+)/

Power ground2 BIDA-/BGND Bidirectional data wire A (-)/

Power ground3 BIDB+/-48 V Bidirectional data wire B (+)/

Power signal (-48 V)4 BIDB-/-48 V Bidirectional data wire B (-)/

Power signal (-48 V)5 BIDC+/BGND Bidirectional data wire C (+)/

Power ground6 BIDC-/BGND Bidirectional data wire C (-)/

Power ground7 BIDD+/-48 V Bidirectional data wire D (+)/

Power signal (-48 V)8 BIDD-/-48 V Bidirectional data wire D (-)/

Power signal (-48 V)9 TX+ Signal output (+)10 TX- Signal output (-)11 RX+ Signal input (+)12 RX- Signal input (-)

PWR PortA PWR port supplies -48 V power signals to an OptiX RTN 310. It must be used if the OptiXRTN 310 is more than 100 meters away from a power supply device.



45

Figure 3-6 Front view of the PWR port

USB/RSSI/NMS PortsThe USB and RSSI/NMS ports are independent from each other but share one protective cap.For details, see Figure 3-7.

Figure 3-7 Front view of the USB/RSSI/NMS ports

USB port RSSI/NMS port

The RSSI port and the NMS port share an RJ45 connector. Table 3-6 provides the pinassignments.

Table 3-6 Pin assignments for the RJ45 connector on the RSSI/NMS portPin No. Signal1 Signal output (+)2 signal output (-)3 Signal input (+)4 Ground5 Reserved6 Signal input (-)7 RSSI test level signal



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Pin No. Signal8 Reserved

NOTEThe NMS port inside the P&E port and the NMS port inside the RSSI/NMS port physically share the sameport, so use only the P&E port or the RSSI/NMS port as an NMS port at one time. The RSSI/NMS port isused as an NMS port only when no 12core P&E cable is available to connect the equipment to the NMSfor service commissioning or maintenance.

3.3.2 IndicatorsAn OptiX RTN 310 has one GE optical port indi

rtn 310 v100r001c01 product description 02

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