OptiX RTN 900

HUAWEI TECHNOLOGIES CO. ， LTD.

www.huawei.com

Huawei Confidential

Security Level: Internal Use Only 23/4/8

OptiX RTN 900 V100R003C00 New Features Introduction

2011-XX-XX

HUAWEI TECHNOLOGIES CO. ， LTD. Huawei Confidential Page 2

Preface

This document describes the new

features of the OptiX RTN 900

V100R003 (RTN 900 V1R3 for short).

After reading this document, you will

be aware of the indicators and

applications of new devices and

functions of the RTN 900 V1R3

compares with R1/R2 version.


Study Guide

The product manuals of the RTN 900

V1R3 can be used for reference.

The keys of the study are new features

and new functions of the RTN 900 V1R3.


References

OptiX RTN 900 V100R003C00 product

manuals


Upon the completion of the course, you will be aware of:

Overall features and product positioning of the RTN 900

V1R3

New software features of the RTN 900 V1R3

Objectives


Contents

Overview of the RTN 900 V1R3

New Functions of the RTN 900 V1R3

Compatibility of the RTN 900 V1R3


Overview of RTN 900s

RTN 980RTN 910 RTN 950

The RTN 900 V1R3 is a version combining Packet radio and Hybrid radio on the RTN 900. The RTN 900 can be smoothly upgraded from V1R2 to V1R3, since the RTN 900 V1R3 is on the same platform as the RTN 900 V1R2.

RTN 910/950 V100R001

RTN 910/950 V100R002

RTN 910/95/980 V100R003

Hybrid

Packet

Hybrid + Packet


RTN 900 Product Positioning

RTN

RTN 910/950

RTN 910

RTN 910 RTN 950

E1/STM-1/IMA E1/FE/GE

Access layer

Dense convergence

layer

Coarse convergence

layer

RTN 980

BTS/NodeB/eNodeB BSC/RNC/aGW


Contents

Introduction to the RTN 900 V1R3



HUAWEI TECHNOLOGIES CO. ， LTD. Huawei Confidential

Compares of New FeaturesFeatures RTN900R1

RTN900R2C00

RTN900R2C02

RTN900R3C00

EOP function －－ EFP8EFP8 （ except 980 ）

Hybrid Ethernet － IFU2/IFX2 IFU2/IFX2IFU2/IFX2/ISU2/ISX2

SNCP － Support Support SupportERPS － Support Support SupportE1_AIS insert TU_AIS －－ Support SupportE1 priority －－ Support Support

Sync Eth SupportIFU2/IFX2/EM6T/EM6F/910 SCC

IFU2/IFX2/EM6T/EM6F/910 SCC

IFU2/IFX2/EM6T/EM6F/910&980 SCC

Fade Margin －－ IFU2/IFX2 IFU2/IFX2Speed Air Interface －－－ ISU2/ISX2IF board Service Type －－－ ISU2/ISX21588V2 clock Support －－ RTN910Outdoor Cabinet Solution －－－ SupportMPLS （ CES/IMA/ATM/Eth ） Support －－ Supportdual direction RMSP －－－ Support （ 980 ）

1,R3 support all the hardware of R2 version and the R2 function feature, and increase MPLS PWE3 feature;

2,If R3 do not use PWE3 feature, it is the same with R2 version;3,Increase ISU2/ISX2 board, RTN980 hardware and RMSP etc feature;

Page 10


Contents


New Functions of the RTN 900 V1R3 IP microwave combining Hybrid and Packet radio

New IF Features

New Service Features

New Clock Features

Outdoor Cabinet Features



Application Scenario of Integrated IP Microwave

Everything over packet

ODU

Ethernet

TDM E1

CES

PacketProcessing

IDU

IMA E1Statistical-mux oremulation

ODU

Ethernet

E1

IDU

TDMcross-connect

matrix

Packetswitching

Hybrid radio

Native E1 and native Ethernet

Hybrid radio Packet radio

1. When functioning as Hybrid radio, it transmits Native E1 services

and Native Ethernet services.

2. When functioning as Packet radio, it transmits PWE3 services

only.


Introduction to Integrated IP Microwave

Integrated IP microwave develops from Hybrid radio. Integrated IP microwave

can transmit Native E1/STM-1, Native Ethernet, or PWE3 services based on

the software settings. Therefore, integrated IP microwave achieves smooth

evolution from Hybrid radio (transmitting Native E1 and Native Ethernet

services) to Packet radio (transmitting PWE3 services).

PWE3 services are also carried by Ethernet frames. An IF board does not

separate Ethernet frames carrying Native Ethernet services from those carrying

PWE3 services. Therefore, integrated IP microwave is essentially Hybrid radio

transmitting Native E1 services and Ethernet services. The difference is that

Hybrid radio transmits Native Ethernet services, but that IP microwave

transmits Native Ethernet services or PWE3 services.


Principle of Integrated IP Microwave

IF board

ODU

AntennaCross-connect Unit

Packet switching Unit

Ethernet(Native Eth & PWE3 service)

Native TDM Service

Backplane

An IF board transmitting integrated IP radio services is connected to the cross-connect unit

through the VC-4 bus on the backplane, and receives Native TDM services. In addition, the IF

board is connected to the packet switching unit through the GE bus and receives Ethernet services.

Incoming Ethernet services can be Ethernet frames carrying PWE3 services and Native Ethernet

services.

The IF board encapsulates Native TDM services and Ethernet services into microwave frames for

transmission.

Page 14


Limitation and Dependency of Integrated IP Radio

IF board Support type

IFU2/IFX2 Native E1+Eth integrated IP radio

ISU2/ISX2Native E1+Eth and Native STM-1+Eth integrated IP radio

Notes:1, To deploy integrated IP radio, system control, switching, and timing boards must be CSH series, rather than CST series.

2 ， Ethernet service can be ative Ethernet, or PWE3 service.

Page 15


Contents



New IF Features


New Clock Features




An IF board can work in different modes to transmit different services. This means no replacement of an IF board.

Application of IF Multimode

• Customers can set the access mode of an IF board through software. This means no replacement of an IF board and smoother evolution from a 2G network to a 3G network.

• For a mobile backhaul network that transmits multiple services, using IF boards that support multiple modes means more convenient maintenance and spare parts preparation.

• Customers can set the access mode of an IF board through software. This means no replacement of an IF board and smoother evolution from a 2G network to a 3G network.

• For a mobile backhaul network that transmits multiple services, using IF boards that support multiple modes means more convenient maintenance and spare parts preparation.

SDH/10GE RING

NB/eNB

NB

E1

FE

BTS

STM-1SDH RING

BSCBSC

RNCRNC

E1/ch.STM-1

E1/ch.STM-1

ATM STM-1/GEATM STM-1/GE

E1/Ch.STM-1

FE/GE

GE RING

…

NB/eNB

FEFE/GE

ISU2ISU2

ISU2ISU2

ISU2ISU2

IF1IF1

IFU2IFU2

IFU2IFU2


IF MultimodeThe ISU2/ISX2 board is available in multiple modes. That is, an IF board can transmit services in the following modes:• Conventional Hybrid mode: Transmits Native

E1+Native Ethernet services, with AM enabled.

• SDH Hybrid mode: Transmits Native STM-1+Native Ethernet services, with AM enabled.

• Pure SDH mode: Transmits 1xSTM-1 or 2xSTM-1 services.

The ISU2/ISX2 board is available in multiple modes. That is, an IF board can transmit services in the following modes:• Conventional Hybrid mode: Transmits Native

E1+Native Ethernet services, with AM enabled.

• SDH Hybrid mode: Transmits Native STM-1+Native Ethernet services, with AM enabled.

• Pure SDH mode: Transmits 1xSTM-1 or 2xSTM-1 services.

IFU2

E1

ETH

AM

IF1

1xSTM-1

IFX2

E1

ETH

AM, XPIC

ISU2

E1

ETH

AM

1/2xSTM-1

ISX2

E1

ETH

AM, XPIC

1/2xSTM-1

Hybrid mode (E1+Ethernet)

Supports the AM function. That is, the E1 service capacity and Ethernet service capacity can be dynamically set based on the air interface capacity. When the E1 service capacity or Ethernet service capacity is set to 0, only PDH services or data services are transmitted.

SDH mode

Supports 1xSTM-1 or 2xSTM-1, and does not support the AM function. The "Bandwidth/Modulation Mode" for the 1xSTM-1 air interface capacity is 28M/128QAM; the "Bandwidth/Modulation Mode" for the 2xSTM-1 air interface capacity is 56M/128QAM.

Hybrid (STM-1+Ethernet) mode

Supports the AM function. The STM-1 service capacity and Ethernet service capacity can be dynamically set based on the air interface capacity. When the STM-1 service capacity or Ethernet service capacity is set to 0, only data services or STM-1 services are transmitted. "Bandwidth/Modulation Mode" is 128QAM or higher for 28M, 64QAM or higher for 40M, and 16QAM or higher for 56M.


Dependencies and Limitations of IF MultimodeChannel Bandwidth Modulation Mode IF Mode

7M

QPSK • E1+ETH

16QAM • E1+ETH

32QAM • E1+ETH

64QAM • E1+ETH

128QAM • E1+ETH

256QAM • E1+ETH

14M

QPSK • E1+ETH

16QAM • E1+ETH

32QAM • E1+ETH

64QAM • E1+ETH

128QAM • E1+ETH

256QAM • E1+ETH

28M

QPSK • E1+ETH

16QAM • E1+ETH

32QAM • E1+ETH

64QAM • E1+ETH

128QAM• E1+ETH• 1xSTM-1

256QAM• E1+ETH•1xSTM-1+ETH

Channel Bandwidth Modulation Mode IF Mode

56M

QPSK • E1+ETH




128QAM• E1+ETH•1xSTM-1+ETH•2xSTM-1


40M

QPSK • E1+ETH

16QAM • E1+ETH

32QAM • E1+ETH




• The preceding tables list the IF modes corresponding to different bandwidths and modulation modes.• If the IF modes at the two ends of a hop are inconsistent, services will be interrupted at air interfaces, and alarms indicating

configuration mismatch at both ends will be reported.

• The preceding tables list the IF modes corresponding to different bandwidths and modulation modes.• If the IF modes at the two ends of a hop are inconsistent, services will be interrupted at air interfaces, and alarms indicating

configuration mismatch at both ends will be reported.


Introduction to Packet Header Compression Used on RTN 900 V1R3 NEs1. Packet header compression is a new function that is realized on ISU2/ISX2 boards.

2. Packet header compression pertains to L2 Ethernet frame header compression and L3

Ethernet frame header compression.

3. L2 Ethernet frame header compression and L3 Ethernet frame header compression can

be enabled on the NMS at the same time or not.

Specification

L2 frame header compression

1.Compresses the DA+SA+VLAN/MPLS+TYPE bytes in an Ethernet frame

header.

2.Compression support: Common Ethernet frames without VLAN support 14-byte

compression; a maximum of 22-byte compression.

3.Supports adaptive header compression. Automatically compresses VLAN tags

and MPLS labels.

L3 frame header compression

1. Compresses the DA+SA+UDP bytes in an IP header.

2. Supports IPv4/IPv6 header compression transmission, which needs to be set

on the NMS.

3. Supports adaptive header compression. Automatically compresses UDP

headers.

Page 20


Application Scenario of Packet Header Compression

Advantages of packet header compression:• During point-to-point IP microwave transmission, VoIP and video services are short packets. In

such short packets, Ethernet MAC header+IP header are large parts of packet headers. If a few

fixed bytes substitute for Ethernet MAC header+IP header, the transmission efficiency of a

radio link is improved significantly, and therefore Ethernet service throughput over microwave is

boosted.• When L2 Ethernet frame header compression is enabled, the RTN 900 V100R003 has 40%

more throughput (500 Mbit/s to 600 Mbit/s) to transmit Ethernet services.• When L2 Ethernet frame header compression and L3 IP packet header compression are

enabled, the RTN 900 V100R003 has 130% more throughput (900 Mbit/s) to transmit Ethernet

services.

Packet header

Payload

CID(8~16Bits)

Payload

CID(8~16Bits)

Payload

Packet header

Payload

MappingDemapping

Packet header compression transmission

Service transmit end Service receive end

Page 21


Calculating Air-Interface Traffic in the Case of Ethernet/IP Header Compression

When a large number of LTE services are deployed, the air-interface bandwidth may be insufficient. The

ISU2/ISX2 board is recommended to provide the Ethernet/IP header compression function.

Calculation formula of air-interface traffic in the case of Ethernet/IP header compression

Service air-interface bandwidth = [(L + 3 + ROUNDUP((L + En. Len)/128) + En. Len + 2(Enable one) or 3(Enable both) - L2 header

compressed - IP header compressed - 2)/(L + 20)] x Service port bandwidth

L is service packet length; 3 + ROUNDUP((L + En. Len)/128) is frame encapsulation at air interface; 20 is Ethernet frame interval and

preamble; En. Len is encapsulation on RTN equipment. If the service is carried on a QinQ link, the encapsulation overhead is 4; 2 or 3

is the index of Ethernet/IP header compressed in the first fragment; the length of Ethernet/IP header compressed is based on the

compression length of packet at port. Only the MPLS label and layer 2 header can be compressed; 2 is the compression length of

FCS. The number of base stations, L, and service port bandwidth are provided by the wireless department.

For example, four base stations are mounted to the RTN 950. Ethernet headers are compressed: 6 Mbit/s (128 bytes), 16 Mbit/s

(256 bytes). The upstream air-interface bandwidth of the RTN 950 is [(128 + 3 + +22 + +2 - 31 - +3)/(128 + 20)] x 6 x 4 + [(256 +

+3 + 2 + +2 - 31 - 2)/(256 + 20)] x 16 x 4 = 82.32 Mbit/s

DA(6 Bytes)

SA(6 Bytes)

TPID(2 Bytes)

S VID (2 Bytes)

TPID(2 Bytes)

S VID (2 Bytes)

Type/Length(2 Bytes)

Version（1Byte）

Type of Service

Total Length

ID

TTL

FlageFragment

Offset

Protocol Head Checksum

SA(4 Bytes)

DA(4 Bytes)

Com_CIDL1 (1 Byte)

Com_Flage(1 Byte)

Type of Service Total Length

ID

TTL

FlageFragment

Offset

Protocol Head Checksum

Playload(N Bytes)

Playload(N-4 Bytes)

FCS(4 Bytes)

FCS(4 Bytes)

UDP Head 静态部分（4 Bytes）

22字节

20字节

Com_CID L2 (1 Byte)

MW Header [3+ROUNDUP((L+ En. Len)/128) Byte]

2

FCS(2 Bytes)

The packet compressed

Ethernet header compression. IP headers cannot be compressed during MPLS encapsulation. IP header compression

IP header compression index

Ethernet header compression index


Dependencies and Limitations of Packet Header Compression on RTN 900 V100R003 NEs

Packet header compression requires that the settings at the two ends of a radio link be the same. Otherwise, communication fails.

Compression information synchronization involves in point-to-point transmission compression information at both ends of a radio link keeps consistent according to the specific feedback information. In this manner, the receive end restores packet headers based on compression information. To achieve compression information synchronization, the radio link must be reliable.

A maximum of 256 streams can be compressed for transmission. Only the newly-developed ISU2/ISX2 boards provide the packet header

compression function.

Page 23


Contents



New IF Features


New Clock Features




Introduction to MPLSMulti-Protocol Label Switching (MPLS) combines ATM and IP technologies. Multi-protocol means multiple Layer 3 protocols such as IPV4 and IPV6. Label switching means switching of labels.

On an MPLS network as shown in this figure, the nodes on the edge are LERs, the intermediate nodes are LSRs. LERs and LSRs fast forward packets based on labels. The path along which the packets are forwarded is an LSP. In this figure, the red line and blue line represent two LSPs.Theoretically, an unlimited number of MPLS labels can be stacked. Actually, there are up to three layers. The outermost layer is a tunnel label and the second outermost layer is a PW label. Pseudo Wire Emulation Edge to Edge (PWE3) can encapsulate ATM, TDM, and Ethernet services into PWs for transmission over an MPLS network.


Dependencies and Limitations of MPLS

1. Dependencies

IF boards for IP microwave and Ethernet interface boards support MPLS tunnels.

2. Limitations

Currently, MPLS labels can only be configured statically.

MPLS tunnels are supported, but IP tunnels and GRE tunnels are not created.

Tunnel bandwidth limitation is only valid for bandwidth verification on the configuration

layer, but not for traffic limit.


Introduction to ETH PWE3, TDM PWE3, and ATM PWE3

Ethernet services, TDM (CES) services, and ATM services can be encapsulated into PWE3

packets and carried on tunnels that are transmitted on an MPLS network.

As shown in this figure, an MPLS network is present between the NodeBs and the RNC and

BSC. The services from the NodeBs are encapsulated into PWE3 packets and then

transmitted over tunnels. At the other end of the MPLS network, the PWE3 packets are

decapsulated and transmitted to the RNC/BSC.

TDMATM

TDMIMA/ATM

(E1)MPLS Network

ATM ETH

TDM

ETH

ATMTDM

ETH

ATMATMETH

PWE3 TunnelRNC

BSC

Page 27


Introduction to MS-PW

Multi-segment pseudowire (MS-PW): An MS-PW is set up

between two or more adjacent PW segments.

PW switching provider edge (S-PE): An S-PE is an intermediate

PE that switches PW labels.

PW terminating provider edge (T-PE): A T-PE is used at both

ends of an MS-PW to terminate a PW label.

T-PE T-PES-PENB RNCTunnel1 Tunnel2

PW1 PW2

MS-PW

Page 28


Typical application of MS-PW

As shown in the left figure, the SS-PW is used to create simulation services between the

NodeBs and RNC. When a NodeB is added, two end-to-end tunnels must be added on the PSN2

network. As a result, with the increase of NodeBs, the number of the tunnels in the PSN2

network increases sharply.

As shown in the right figure, multiple PWs share a tunnel in the PSN2 network. This is called

MS-PW.

Requiring fewer tunnels at a convergence node

Page 29


Introduction to IMAIMA, standing for inverse multiplexing for ATM, is a technology that demultiplexes the stream of concentrated ATM cells into multiple lower-rate links and multiplexes these lower-rate links at the remote end to recover the original stream of concatenated ATM cells. By using this technology, multiple lower-rate links are flexibly and conveniently multiplexed.IMA is used on E1 links or links of other rates to transmit ATM cells. The IMA sublayer is part of the Physical layer, that is, between the Transport layer and the ATM layer. It transparently transmits ATM and higher layer signals.

As show in the figure, LAG provides the following functions:Increases the bandwidth utilization: Multiple low-rate links can be multiplexed into a logical high-rate link. Dynamically adjusting the bandwidth: After an IMA group is successfully created, the bound links in the IMA group can be dynamically added or deleted. Improving the usability: The IMA group supports the link troubleshooting and automatic link recovery. In addition, the IMA group can automatically delete a link with excessive long delay.


Typical Application of Fractional E1 Fractional E1 has the same application as IMA/CES.

Fractional E1 services are classified into Fractional E1 IMA services and Fractional E1 CES services.

The 64 kbit/s timeslots in E1 are fully used to transmit 2G services (CES) and 3G services (IMA).

Fractional E1 IMA has the same functions as E1 IMA, and Fractional E1 CES has the same functions as

CES.

For IMA negotiation of Fractional E1 IMA, only one or several 64 kbit/s timeslots in E1 on the NodeB

side interconnect with the corresponding timeslots in E1 on the RTN side. Unlike common IMA,

Fractional E1 IMA transmits valid timeslots, which requires less bandwidth.

Page 31

BTS

BSCBSC

0 1 2 3 …30 31

0 1 2 330 31…

BTS

BTS

0 1 2 3

30 31

…

PW0 2 31

PW0 1 31

PW0 1 2 3

Saving bandwidths is

saving investment.


Contents



New IF Features


New Clock Features




Introduction to Clock FeaturesThe OptiX RTN 900 supports four clock features: Physical layer clocks, IEEE 1588v2 clocks,

IEEE 1588 ACR clocks, and CES ACR clocks.

FeatureRTN 900

R1 (Packet)

RTN 900 R2

(Hybrid)

RTN 900 R3 (Hybrid + Packet)

Strategy

Physical layer clock

√ √ √1. Contains microwave air-interface, external clock port, synchronous

Ethernet, STM-N port.

IEEE 1588v2 clock

√ x √

1. The OptiX RTN 900 R1 and OptiX RTN 900 R3 support the IEEE 1588v2. The CSHD board on the OptiX RTN 900 R3C00 supports IEEE 1588v2 clocks. The OptiX RTN 900 R3C00 supports IEEE 1588v2 time synchronization through air interfaces. Currently, only OC/BC modes are supported. The TC mode is not supported.

IEEE 1588 ACR clock

√ x √

1. The OptiX RTN 900 R1 and OptiX RTN 900 R3 support IEEE 1588 ACR clocks.

2. In the R1 version, IEEE 1588 ACR clocks can traverse only a PSN defined by ITU-T G.8261.

3. In the R3C00 version, IEEE 1588 ACR clocks can traverse a non-PSN such as a microwave network and SDH (VC-4) network.

CES ACR clock

√ x √

1. The CES ACR in the R1 version adopts the FIFO mode, which is unavailable at a microwave port.

2. In the R1 version, IEEE 1588 ACR clocks can traverse only a PSN defined by ITU-T G.8261.

3. In the R3C00 version, CES ACR clocks using the enhanced timestamp scheme can traverse a non-PSN such as a WDM network, microwave network and SDH (VC-4) network.

Physical layer clocks, IEEE 1588v2 clocks, and IEEE 1588 ACR clocks can be used to achieve frequency synchronization between

NEs in order to meet BS frequency synchronization, microwave overhead clock synchronization, and retiming clock extraction

requirements. IEEE 1588v2 clocks can achieve time synchronization between NEs and with BSs. CES ACR clocks can meet the

frequency synchronization requirements of TDM services, and provide frequency synchronization for BSs.

Page 33


Introduction to IEEE 1588 ACRIEEE 1588 ACR is a frequency synchronization technology. To be specific, the master equipment encapsulates the local system clock into a Sync packet as a time stamp and transmits the Sync packet to a packet switched network (PSN), which transparently transmits the Sync packet to the slave equipment. On receiving the Sync packet, the slave equipment extracts the time stamp from the Sync packet and recovers the clock frequency by using the ACR algorithm. In this way, the clock frequency of the PTP equipment at the two ends of a PSN is synchronized. IEEE 1588 ACR achieves only frequency synchronization and cannot achieve time synchronization.As shown in the figure, to achieve frequency synchronization between area A and area C on the two sides of the PSN, enable the IEEE 1588 ACR function on the equipment on the two sides of the PSN. That is, the PTN 3900 sends Sync packets that are later transmitted through a PSN. On the RTN 950 enabled with the IEEE 1588 ACR function, the clocks are recovered and transmitted downstream through the physical layer.

Page 34


Introduction to CES ACRCES ACR is a function that uses the adaptive clock recovery (ACR) technology to

recover clock synchronization information carried by CES packets. As shown in the

figure, Master uses the E1 service clock/local clock information as timestamps in RTP

packet headers and encapsulates them into CES packets. Slave recovers clocks

according to the timestamps/SN in packets, therefore achieving frequency

synchronization requirements of TDM services and BSs.


Introduction to IEEE 1588v2

IEEE 1588v2, defined by the IEEE, means the Precision Clock

Synchronization Protocol for Networked Measurement and

Control Systems (PTP for short).

IEEE 1588v2 clock protocol is applied to precise time

synchronization at each node on a distributed communication

network. With the relevant hardware and software, the system

clock of the network equipment (or client) synchronizes with the

master clock on the network at the nanosecond level.

Independently of the GPS signals, IEEE 1588v2 is a low cost time

synchronization network solution.


Contents



New IF Features


New Clock Features




Introduction to the Outdoor Cabinet Monitoring FunctionThe microwave equipment uses RJ485 ports to connect to COM ports of outdoor

cabinets for outdoor cabinet monitoring.

Outdoor cabinets are present as extended interface boards (PMU and TCU) on the NMS.

For different outdoor cabinets, the PMU and TCU boards are configured differently.

Temperature monitoring: The temperature of outdoor cabinets and fan information can be

queried. The temperature alarm threshold, fan speed adjustment, and TCU alarm severity

can be set.

Power monitoring: The power supply modules of outdoor cabinets and storage

information managed by the PSU can be queried and set.

Environment monitoring: The environment factors that may result in damage to

equipment and equipment fault. The monitoring contents pertain to temperature,

humidity, door magnet, water intrusion, smoke, door access system, and cable

distribution frame.OptiX RTN 910s and OptiX RTN 950s support the outdoor cabinet

monitoring function.

OptiX RTN 980s can not support the outdoor cabinet monitoring function.


Typical Application of the Outdoor Cabinet Monitoring Function1. APM30 AC cabinet (110 V/220 V), containing one PMU and two TCUs

APM30 DC cabinet (-48 V), containing one TCU

OMB AC cabinet (110 V/220 V), containing one PMU and one TCU

OMB DC cabinet (-48 V), containing one TCU

2. APM30 cabinets can be ground-mounted. The DC cabinet has 11U equipment

installation space and the AC cabinet has 7U equipment installation space.

Outdoor mini boxes (OMBs) can be wall-mounted with metal poles. It has 2U

equipment installation space.

OMB cabinetAPM30 cabinet


Contents





Interconnection Relationship Between IF Boards on RTN NEs

IF Board on RTN 900 V1R3 on the Local End

IF Board on RTN 900 V1R3 on the Opposite End

Service Mode Remarks

IFU2 IFU2 E1+ETH

IF1 IF1 NxE1/STM-1

IFX2 IFX2 E1+ETH XPIC

ISU2 ISU2 E1+ETH/STM-1+ETH/STM-1/2xSTM-1

ISX2 ISX2 E1+ETH/STM-1+ETH/STM-1/2xSTM-1 XPIC

ISU2 ISX2 E1+ETH/STM-1+ETH/STM-1/2xSTM-1The ISX2 board is not enabled with

the XPIC function.

Interconnection relationship between IF boards on RTN 900 V1R3




IFU2 IFU2 E1+ETH

IF1 IF1 NxE1/STM-1

IFX2 IFX2 E1+ETH XPIC

ISU2 N/A 　

ISX2 N/A 　

Interconnection relationship between IF boards on RTN 900 V1R3 and those on RTN 900 V1R2

Page 41


Interconnection Relationship Between IF Boards on RTN NEs


IF Board on RTN 600 on the Opposite End


IFU2 IFH2 E1+ETH The air interface is not enabled with the 1588v2 feature.

IFU2 IFH1 E1+ETHThe air interface on RTN 605 R3 is not enabled with the

1588v2 feature. The 56 MHz channel spacing is not supported.

IF1 IF1 NxE1/STM-1

IFX2 N/A 　

ISU2 N/A 　

ISX2 N/A 　

Interconnection relationship between IF boards on RTN 900 V1R3 and those on RTN 600 Note: ETH refers to the IF service mode, bearing MPLS or Native Ethernet services.

IF Board on RTN 900 V1R3 on the Local

End



IFU2 IFE2 ETH The air interface is enabled with the 1588v2 feature.

IF1 N/A 　

IFX2 IFX2 ETH The air interface is enabled with the 1588v2 feature.

ISU2 N/A 　

ISX2 N/A 　

Interconnection relationship between IF boards on RTN 900 V1R3 and those on RTN 900 V1R1

Page 42

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