1

1

Confidential Information of Huawei.

No Spreading without Permission.

OTC304101 OptiX Metro 6100

Hardware Description

ISSUE 1.1

2Internal Use

Course ObjectivesCourse Objectives

Upon completion of this course, you will

be able to:

� Describe the network applications of the

OptiX Metro 6100 equipment.

� Explain the system structure and features

of OptiX Metro 6100 equipment.

� State the main functions of the cards in

the OptiX Metro 6100 equipment.

� Outline the system protection modes of

OptiX Metro 6100 equipment.

2

3Internal Use

�System Overview

� Cabinet and subrack

� Cards

� Protection of equipment

4Internal Use

Position of OptiX Metro 6100Position of Position of OptiXOptiX Metro 6100Metro 6100

��MetroMetro CoreCore//Regional Regional NNetworketwork: : Metro6100 Provides Metro6100 Provides DWDM/CWDM Ring, Line, MeshDWDM/CWDM Ring, Line, Mesh

ISP/ICP

Fiber ChannelLeased linesVoiceGE and 10GE

LAN Extension

Enterprise group

SDH/PDH IP/ATM/Video

Data/Internet/Video

FCFC

FC

Metro 6100

Metro 6040

Branch office A

Branch office B

Branch office C

Enterprise group

3

5Internal Use

� Very large capacity

�� MultiMulti--service access and TMUX functionservice access and TMUX function

�� Huawei unique OAMSHuawei unique OAMS

�� Abundant protection mechanismsAbundant protection mechanisms

�� Modular OADM design and scalabilityModular OADM design and scalability

�� Transport PDH clock source for timingTransport PDH clock source for timing

�� Support 40 wavelengths DWDM(G.694.1) Support 40 wavelengths DWDM(G.694.1)

�� Support 16 wavelengths CWDM(G.694.2 Support 16 wavelengths CWDM(G.694.2

and G.695 applicationand G.695 application

�� …………....

OptiX Metro 6100 for Metro coreOptiX Metro 6100 for Metro core

ESCON/FICON

Fiber ChannelVideo

SDH/SONET

ATM

Ethernet

Metro WDM

��Metro Metro WDM NetworkingWDM Networking

6Internal Use

�System Overview

� Cabinet and subrack

� Cards

� Protection of equipment

4

7Internal Use

Hardware OverviewHardware Overview

�OptiX Metro 6100 system:

� cabinets

� sub-racks

� OADM frames

� DCM frames

� fiber-spooling frames

� boards

Cabinet

•Dimension : 2.2×0.6×0.3m(H×W×D)

2.6×0.6×0.3m(H×W×D)

•Dimension : 2.2×0.6×0.3m(H×W×D)

2.6×0.6×0.3m(H×W×D)

•A single cabinet accommodates: 3 sub-racks

ETSI300/600,19" or 23"frames

•A single cabinet accommodates: 3 sub-racks

ETSI300/600,19" or 23"frames

8Internal Use

Metro 6100 System ArchitectureMetro 6100 System Architecture

10. Rack-

mounting

ear

9. Fiber spool8. Air filter4. Cover of air

exhaust vent

7. Fan tray

assembly

6. Cover of optical attenuator area5. Board area

3. Air baffle2. DC power filter board (DPFU)1. Interface area

Metro 6100 Main shelf (Subrack)

•Dimension: 625mm(H) x 440mm(W) x 290mm (D)

1 to 3 shelves housed in one rack

•Dimension: 625mm(H) x 440mm(W) x 290mm (D)

1 to 3 shelves housed in one rack

Filter Shelf

•Dimension : 86.1×440×290mm(H×W×D)•Dimension : 86.1×440×290mm(H×W×D)

4

5

6

78

1 2

3

910

5

9Internal Use

SubSub--rack Interface Arearack Interface Area

9. HUB power output interface8. OCTL interface7. ETHERNET interface

6. Orderwire phone interface5. Subrack power switch4. Subrack power cable

interface

3. ALM interface2. OAM interface1. Clock interface (6)

10Internal Use

Metro6100Metro6100 Cabinet Cabinet LayoutLayout

P

M

U

I

U

#

1

3

I

U

#

1

2

I

U

#

1

1

I

U

#

1

0

I

U

#

9

I

U

#

8

I

U

7

I

U

#

6

I

U

#

5

I

U

#

4

I

U

#

3

I

U

#

2

I

U

#

1

PPFU

S

C

CShelf board areaShelf board area

PPFUEFI

Fan Units

Dust Filter

Attenuator area

12 Universal Interface Slots:12 Universal Interface Slots:

OTU/OADM/OA CompatibleOTU/OADM/OA Compatible

IU15 IU16 IU17

IU18 IU19 IU20

CONNECTION PANEL IU21 IU22

Interconnect

Cables

OADM Site

Two -48 V DC inputs for mutual backup

Optical Add/Drop Unit

DCM Holder

HUB Holder

Power Distribution &

alarm Unit

333

System control and communication slot

DCM Holder

HUB Holder

Power Distribution &

alarm Unit

333

OTM Site

I

U

7

I

U

7

I

U

7

I

U

7

Sub-rack Interconnection

PassivePassive

Filter shelfFilter shelf

MainMain shelfshelf

6

11Internal Use

�System Overview

� Cabinet and subrack

� Cards

� Protection of equipment

12Internal Use

MetroMetro 61006100 CardsCards

VOA, VA4, MCA, PMUAuxiliary unit

OLP, SCSOptical protection unit

SCCSystem control and communication unit

SC1, SC2, TC1, TC2Optical supervisory channel unit

OAU, OBU, OPUOptical amplifier unit

MR2Optical add/drop multiplexer unit

M40, V40, D40, FIU, EFIU, ACSOptical multiplexer/de-multiplexer unit

LWF, LRF, LBE, TMX, TMR, LWC, TRC,

LWM, LWMR, LWX, LWXR, LQG, LDG,

LQS, EC8, AP4, AP8, AS8

Optical transponder unit

CardsFunction Units

7

13Internal Use

OTU Cards IntroductionOTU Cards Introduction

14Internal Use

MultiMulti--service Accessservice Access

••SDHSDH

••PDHPDH

••FE FE

••GEGE

••10GbE10GbE

••ATMATM

••ESCONESCON

••FICONFICON

••FCFC

••FDDIFDDI

••D1 VideoD1 Video

••SDHSDH

••PDHPDH

••FE FE

••GEGE

••10GbE10GbE

••ATMATM

••ESCONESCON

••FICONFICON

••FCFC

••FDDIFDDI

••D1 VideoD1 Video

OTUOTUOTUOTUOCh

8

15Internal Use

Basic Functions of OTU Basic Functions of OTU

OTUOTU

ITU-TG.692

ITU-TG.694.1/2

ITU-T G.695

ITU-TG.709

FEC/AFEC

ESC function

Channel spacing

(0.8nm or 20nm)

NRZ/Super WDM

Tunable OTUClient WDM

ITU-TG.691

ITU-TG.957

IEEE802 series

SAN

ATM

850nm/1310nm

/1550nm

B1 （（（（B2））））,J0 monitoring

Performance/Alarm

ALS function

3R function

16Internal Use

LWF STM64FEC

LDG2.5Gbps

LQS2.5Gbps

AS82.5Gbps

EC82.5Gbps

TMXSTM64FEC

LBE STM64

LQGLQGLQGLQG5Gbps

AP8

General OTU Combiner OTU

GE OTU SAN OTU

STM-1/4/16

STM-16

STM-64

2xGE

8xAny

4××××STM-16

10GbE LAN

4xGE

OTU ClassificationOTU Classification

LWXArbitrary Bit Rate

(34Mbit/s~2.7Gbit/s)

LWCSTM16FEC

8xESCON

2.5Gbps

4xSTM-1/4/16

4xSTM-1/4/16

LWM

AP44xAny2.5Gbps

9

17Internal Use

STM64AFEC

LRF

STM64FEC

Regeneration OTU

STM-64

Arbitrary rate

STM-64

OTU ClassificationOTU Classification

TRCSTM16FEC

STM-16

LWMR

TMR

LWXR

STM-1/4/16

18Internal Use

Diagram of General OTUDiagram of General OTU

� Functional block diagram of LWFFunctional block diagram of LWF::

Optical transponder module

Performanceand alarmmonitoring

CPU

Mailbox

STM-64

STM-64

Client side WDM side

G.694.1

G.694.1

SCC board

10

19Internal Use

OTU For RegenerationOTU For Regeneration

� Functional block diagram of LRF/TMR/LWXR/LWMR/TRC:

Note: Unidirectional OTUs: LRF, TMR, TRC

Bi-directional OTUs: LWXR, LWMR

Regenerating module

Performanceand alarmmonitoring

CPU

Mailbox

SCCboard

WDM side WDM side

20Internal Use

Port/Interface DescriptionPort/Interface Description

RUN

ALM

TMX

IN OUT

Tx1

Tx2

Rx1

Rx2

Tx3

Tx4

Rx3

Rx4

RUN

ALM

Tx

Rx IN

OUT

LWF

RUN

ALM

IN OUT

LDG

Tx1

Rx1

Tx2

Rx2

RUN

ALM

OUT1 OUT2

LDG

Tx1

Rx1

Tx2

Rx2

IN1 IN2

Client side

IN

Tx

Rx

OUT

DWDM side

RUN

ALM

Tx

Rx IN

OUT

LBE

11

21Internal Use

The communication with

SCC unit is interrupted,

and is in off-line

working state

Once every four seconds

(2 seconds on and 2 seconds off)

In serviceOnce every two seconds

Not in serviceFive times per second

Running

indicator

(Green)

Minor alarmOnce every other second

Major alarmTwice every other second

Critical alarmThree times every other second

No alarmOff

Alarm indicator

(Red)

DescriptionFlash StateCategory

Indicator DescriptionIndicator Description

22Internal Use

MajorTwice every other

second

Input power too highIN-PWR-HIGH

MajorTwice every other

second

Input power too lowIN-PWR-LOW

CriticalThree times every

other second

Loss of signals at receiving

end

R-LOS

CriticalThree times every

other second

Received FEC frame is out

of frame

FEC-OOF

CriticalThree times every

other second

Loss of receive FEC frameFEC-LOF

Alarm category

Red indicator flashes

DescriptionAlarm

Alarm DescriptionAlarm Description

12

23Internal Use

Board CategoryBoard CategoryBoard Category

IU1 – IU6,

IU8 – IU13

32Multi-rate optical wavelength conversion

regenerating board

LWMR

IU1 – IU6,

IU8 – IU13

32Multi-rate optical wavelength conversion boardLWM

IU1 – IU6,

IU8 – IU13

32STM-16 optical transmitting regeneratorTRC

IU1 – IU6,

IU8 – IU13

32STM-16 transmit-receive wavelength conversion

unit

LWC

IU1 – IU6,

IU8 – IU13

3210.71G line regenerating wavelength conversion

board with AFEC and G.709

TMR

IU1 – IU5,

IU8 – IU12

644-Channel STM-16 asynchronous MUX OTU-2

wavelength conversion board

TMX

IU1 – IU6,

IU8 – IU13

3210GE transceiver wavelength conversion board

with FEC(LAN interface)

LBE

IU1 – IU6,

IU8 – IU13

32STM-64 line regenerating wavelength conversion

unit with FEC function

LRF

IU1 – IU6,

IU8 – IU13

32STM-64 transmit-receive line wavelength

conversion unit with FEC function

LWF

Slot Width of front

panel

(mm)

Full nameBoard

name

24Internal Use

Board CategoryBoard CategoryBoard Category

IU1 – IU6,

IU8 – IU13

328-Channel any SDH convergence boardAS8

IU1 – IU6,

IU8 – IU13

328-Channel protocol-independent service

convergence board

AP8

IU1 – IU6,

IU8 – IU13

324-Channel protocol-independent service

convergence board

AP4

IU1 – IU6,

IU8 – IU13

328 x ESCON service convergence boardEC8

IU1 – IU6,

IU8 – IU13

324 x STM-1/4 multiplex optical wavelength

conversion board

LQS

IU1 – IU6,

IU8 – IU13

322 x Gigabit Ethernet unitLDG

IU1 – IU5,

IU9 – IU13

324 x GE multiplex optical wavelength conversion

board

LQG

IU1 – IU6,

IU8 – IU13

32Arbitrary bit rate regenerating boardLWXR

IU1 – IU6,

IU8 – IU13

32Arbitrary bit rate wavelength conversion boardLWX

Slot Width of front

panel

(mm)

Full nameBoard

name

13

25Internal Use

Features of the Features of the OTUsOTUs

NO1+1 NO2*GE (850nm/1310nm)STM-16LDG

NO1+1 inter-boardFECSTM-162.67GLWC

1+1 inter-board

1:N

1+1,WXCP( wavelen

gth cross-connection

protection)

1+1 inter-board

1:N

Protection

FEC

NO

FEC

FEC

function

10GE(10.31G)

4*GE (850nm/1310nm)

STM-64

Client side

Service type

NO10.71GLBE

NO5GLQG

NO10.71GLWF

SuperWDMDWDM side

Data rate

Cards

26Internal Use

Features of the Features of the OTUsOTUs

NO1+1NO8*ESCON (200M)STM-16EC8

1+1

1+1 inter-board

1+1

1+1

1+1

1+1

Protection

NO

AFEC

NO

NO

NO

NO

FEC

function

200M--1.2G(such as ESCON,

FICON,FC, DVB-ASI)

VC-4/STS-3 concatenated service

or 4*SDH/SONET service

4 STM-1/STM4

one GE and one STM-4/STM-1

STM-1/OC-3, STM-4/OC-12 or

STM-16/OC-48

34 Mbit/s–2.7 Gbit/s at 850 nm and

1280–1565 nm

Client side

Service type

NOSTM-16AP4

NO10.71TMX

NOSTM-16LQS

NOSTM-16LGS

NOSTM-1/OC-3, STM-

4/OC-12 or STM-

16/OC-48

LWM

NO34 Mbit/s–2.7Gbit/sLWX

SuperWDMDWDM side

Data rate

Card

s

14

27Internal Use

MUX/DEMUX Cards IntroductionMUX/DEMUX Cards Introduction

28Internal Use

Board CategoryBoard CategoryBoard Category

OADM frame:

IU15 – IU22

242-Channel add/drop unit MR2

OADM frame:

IU15 – IU22

24 OADM access board ACS

OADM frame:

IU15 – IU22

24 External fiber line interface board EFIU

IU1 – IU6,

IU8 – IU13

32Fiber interface unit FIU

IU2 – IU5,

IU9 – IU13

6440-channel demultiplexing board D40

IU2– IU6,

IU9 – IU13

6440-channel multiplexing board with VOA V40

IU2 – IU6,

IU9– IU13

6440-channel multiplexing board M40

Slot Width of front

panel

(mm)

Full nameBoard

name

15

29Internal Use

MUX/DEMUX CategoryMUX/DEMUX Category

6 7 8 9 10

11 12 13 14 15 16

17 18 19 20 21 22

23 24 25 26 27 28

29 30 31 32 33 34

35 36 37

OUTRUN

ALM

M40

MON

1 2 3 4

5

38 39 40

D40/

V40

40x λλλλλλλλ

Main

Channel

M4040x λλλλλλλλ 6 7 8 9 10

11 12 13 14 15 16

17 18 19 20 21 22

23 24 25 26 27 28

29 30 31 32 33 34

35 36 37

IN

RUN

ALM

D40

MON

1 2 3 4

5

38 39 40

Note: channel space is100 GHz, online monitoring

port “MON” is provided.

Support optical power detecting and support alarm

and performance event reporting.

Main

Channel

30Internal Use

Diagrams of MUX/DEMUXDiagrams of MUX/DEMUX

� Functional block diagram of M40/D40/V40Functional block diagram of M40/D40/V40

Optical

multiplexer

CPU

Mailbox

SCC board

Opticalsplitter

Single channel

signals inputOUT

MON

Opticaldemultiplexer

CPU

Mailbox

SCC board

Opticalsplitter

Single channelsignals output

IN

MON

16

31Internal Use

FIUFIUFIUFIU

FIU: Fiber interface unit

MUX/DEMUX CategoryMUX/DEMUX Category

Supervisory

channel

WDM

OUT

IN

WDM

TM

TC

RC

RMSplitter

MONSupervisorychannel

Main path

Main path

Line signal

Line signal

Demultiplexing

optical module

OUT

IN

BD1

Multiplexing

optical module

BD2

BD3

BA1

BA2

BA3

ACSACSACSACS

ACS: OADM access board

� Divides the coming signals into three groups, the

number of wavelengths in each group is different.

� Realize multiplexing and demultiplexing of the main

path and the optical supervisory channel.

� Online monitoring

� EFIU is similar as FIU except different size.

32Internal Use

��MR2: 2MR2: 2--channel add/drop unitchannel add/drop unit

MUX/DEMUX CategoryMUX/DEMUX Category

MR2

MR2 connection

OADM opticalmodule OUT

IN

D1

A1

MI MO

D2

A2

17

33Internal Use

The communication with

SCC unit is interrupted,

and is in off-line

working state

Once every four seconds

(2 seconds on and 2 seconds off)

In serviceOnce every two seconds

Not in serviceFive times per second

Running

indicator

(Green)

Minor alarmOnce every other second

Major alarmTwice every other second

Critical alarmThree times every other second

No alarmOff

Alarm indicator

(Red)

DescriptionFlash StateCategory

Indicator Description of MUX/DEMUXIndicator Description of MUX/DEMUX

34Internal Use

OA Cards IntroductionOA Cards Introduction

18

35Internal Use

OAOA

OTUOTU

OAOA

OBU/OAU OPU/OAUOAU

�� OA: OAU, OBU,OPU (EDFA amplifiers)OA: OAU, OBU,OPU (EDFA amplifiers)

OA ApplicationOA ApplicationOA Application

36Internal Use

OA CategoryOA CategoryOA Category

OPU-C01 IU1–IU6,

IU8–IU1332

OPU-C02

Optical preamplifier

boardOPU

IU1–IU5,

IU8–IU12

64OBU-C03

IU1–IU6,

IU8–IU13

32OBU-C01

Optical booster boardOBU

OAU-C03

OAU-C02IU1–IU5,

IU8–IU1264

OAU-C01

Optical amplifier unitOAU

Slot Width of front

panel

(mm)

Full nameBoard

name

19

37Internal Use

OAU/OPU/OBU UnitOAU/OPU/OBU UnitOAU/OPU/OBU Unit

OAU

OAU/OPU/OBUOAU/OPU/OBU

•40 channel optical signals (with channel spacing 100

GHz) may be amplified simultaneously.

•Typical gain is different from each other.

•With small noise figure.

•Gain lock function is available.

•Performance monitoring of pumps.

•Support online spectrum analysis through “MON”.

IN OUT

MON

RUN

ALM

OAU

MON

IN OUT

TDC RDC

Diagram

EDFA optical module

CPU

Mailbox

IN OUT

MON

SCC board

38Internal Use

Specifications of OAU/OPU/OBUSpecifications of OAU/OPU/OBU

3214-3220OPU-C02

3214-3220OPU-C01

6420-2223OBU-C02

3217-3223OBU-C01

6420-3226 – 32OAU-C03

6417-3220 – 33OAU-C02

6420-3220 – 33OAU-C01

Width of front

panel

(nm)

Maximum output

optical power

(dBm)

Minimum input

optical power

(dBm)

Gain

(dB)

Type

20

39Internal Use

OSC/SCC Card IntroductionOSC/SCC Card Introduction

40Internal Use

RUN

ALM

TM RM

SC1

RUN

ALM

TM1RM1

SC2

TM2RM2

RUN

ALM

TM RM

TC1

RUN

ALM

TM1RM1

TC2

TM2RM2

3 E1

clock

service

2Mbit/s

or 2MHz

interface

SC1/2 and TC1/2SC1/2 and TC1/2SC1/2 and TC1/2

SC1/2: Unidirectional/Bi-directional optical supervisory channel unit

TC1/2: Unidirectional/Bi-directional optical supervisory channel and timing transmission unit

SC1/TC1 could be used in OTM site, and SC2/TC2 could be used in OLA or OADM site.

Be inserted in slots: IU6, IU8

Opticalreceivingmodule

RM Overheadprocessingmodule

Opticaltransmittingmodule

TM

CPU

Mailbox

SCC board

SCC board

21

41Internal Use

System Control and Communication UnitSystem Control and Communication UnitSystem Control and Communication Unit

� Communicate with other boards of NE, implement board configurations and collection of board

performance and alarms.

� Support ECC communication with NEs for network management.

� ALC switch for cutoff the audio alarms and RST button for hardware reset.

� ID is embedded.

RUN

ALM

SCC

ETN

RST

ALC

IU7

Alarm switch

Resetting

CPU

Mailbox

NM

Other boards

Overheadaccessmodule

DCCinterface

Datecommunication

interface

Optical supervisory boards

42Internal Use

Auxiliary Card IntroductionAuxiliary Card Introduction

22

43Internal Use

VOA: Variable optical attenuatorVOA: VOA: Variable optical attenuatorVariable optical attenuator

RUN

ALM

IN OUT

VOA

� Adjust the optical power of one optical signal

according to the control command sent by the SCC.

� Monitor the optical power and attenuation, reports

alarms.

Variable opticalattenuator

CPU

Mailbox

IN OUT

SCC board

44Internal Use

VA4: VA4: 44--Channel variable optical attenuatorChannel variable optical attenuator

� Adjust the optical power of four optical signals respectively according

to the control command sent by the SCC.

RUN

ALM

VA4

IN1 OUT1

IN2 OUT2

IN3 OUT3

IN4 OUT4

CPU

Mailbox

SCC board

Variable optical

attenuator

Variable optical

attenuator

Variable optical

attenuator

IN

OUT

Variable optical

attenuator

IN

OUT

IN

OUT

IN

OUT

�Monitors the optical power and the attenuation, and reports alarms.

�The range of variable attenuation is 2 dB – 25 dB, and resolution is 0.1 dB.

23

45Internal Use

MCA: MCA: MultiMulti--channel spectrum analyzer unitchannel spectrum analyzer unit

� MCA-4/ MCA-8 supports spectral analysis for four/eight

channels of signals.

� Supervise and report the optical power, central wavelength,

signal-to-noise ratio and number of channels.

� Monitor and analyze optical channel status and report

alarms.

�One MCA occupies two slots and can be inserted in slots:

IU2 – IU6, IU9 – IU13.

R01 R02

R03 R04

R05 R06

R07 R08

RUN

ALM

MCA

46Internal Use

PMU Card PMU Card

Ethernet communication interface, realizing communication between

boards in the subrack and external equipment.

ETH

Used for concatenating equipment alarms among subracks and outputting

alarm driving signals to cabinet indicators.

LAMP1/LAM

P2

Co-directional 64 kbit/s data interface.F1

Use F2/F3 bytes of the supervisory channel and provide features of RS-

232 and RS-422 interfaces. The maximum rate is 19.2 kbit/s.

Serial 1/2

Management serial interface for external equipment, bearing features of

RS-232 interfaces.

F&f

FunctionInterface

•Monitor the voltage of two power supplies of the subrack, and report over-

voltage and under-voltage alarms and detected voltage value to SCC board.

•Input 16 external alarms & output 4 alarms to DC power distribution cabinet

or the centralized alarm control equipment.

•Monitor board temperature, and report performance and alarms to SCC.

•Provide 5 V DC power supply for the OADM frame.

•Provide audio alarm and alarm test switch.

RJ45

24

47Internal Use

� Optical Transponder Unit (OTU)

� Optical Multiplex/De-multiplex/add/drop Unit (MUX / DEMUX)

� Optical Amplifier Unit (OA)

� Optical supervisory Channel Unit (OSC)

� System Control and Communication Unit (SCC)

� Auxiliary Unit

Summary for CardsSummary for Cards

48Internal Use

�System Overview

� Cabinet and subrack

� Cards

� Protection of equipment

25

49Internal Use

OLP: Optical Line ProtectionOLP: Optical Line Protection

Signal selection

module

Protection channel

Working channelRI1

Optical splitter

RO

TI

RI2

Working channel

Protection channel

TO1

TO2

� Provide optical line protection, to guarantee

that service can be normally received if

there is some line fault.

� The protection mode is dual-fed and signal

selection and single-end switching.

RUN

ALM

TO1

TO2

TI RO

OLP

RI1

RI2

50Internal Use

Optical Line ProtectionOptical Line ProtectionOptical Line Protection

��Station AStation A ��Station CStation C

TO1

TO2

RI1

RI2

Working channel

Protection channel

TI

RO

RI1

RI2

TO1

TO2

TI

RO

O

T

M

O

T

M

O

Working channel

Protectection channel

L

P

O

L

P

O

L

A

or

O

A

D

M

O

L

P

O

L

P

��Station BStation B

26

51Internal Use

SCS: Sync optical channel separator SCS: Sync optical channel separator

� Used as coupler for OTU accessing when optical channel protection is used.

� Implement optical channel protection of different routes. Meanwhile, SCS board

supports OTU board level protection of the same route.

� No need the support of protocol.

RUN

ALM

TO11

TO21

SCS

RI11

RI21

TO12 RI12

TO22 RI22

TI1 RO1

TI2 RO2

Optical splitter

RI11Optical couplerRO1

TI1

RI12

TO11

TO12

Optical splitter

RI21Optical couplerRO2

TI2

RI22

TO21

TO22

52Internal Use

Optical Channel Protection Optical Channel Protection Optical Channel Protection

Optical

splitter

RI11Optical

coupler

RO1

TI1

RI12

TO11

TO12

Working

OTU

Protection

OTU

Optical

coupler

RI11

Optical

splitter

RI12

TO11

TO12

Working channel

Portection channelRO1

TI1

SCS SCS

Working

OTU

Protection

OTU

Site A Site B

� Two OTU cards are available. Two OTU cards are available.

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53Internal Use

�� One OTU card sends a single wavelength to two directions and One OTU card sends a single wavelength to two directions and

selects from two directions. selects from two directions.

OTU

OTU with concurrent sending and selective receiving

Optical Channel ProtectionOptical Channel ProtectionOptical Channel Protection

Working channelProtection channel

RUN

ALM

IN1

OUT1

IN2

OUT2

LWX

TX

RX

54Internal Use

SummarySummary

�System Overview

� Cabinet and subrack

� Cards

� Protection of equipment

The End!The End!The End!The End!

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Confidential Information of Huawei. No Spreading without Permission.