3333 Bower Ave. Santa Clara CA95054 & 40 Nagog Park Acton MA 01720

CATS – WDM and Ethernet Access

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|Smart Network Building Blocks

exchange

FE Service

WDM

GE Ring

GE Service

FE/GE ServiceQoS, SLA, OAM

SD

SD

ES C

D L T

PR O L I AN T 8 0 0 0

GSM Gateway FE

E1/T1

10 GE

MTS1080CATS 3000

MTS180

SMUX-GE SMUX-GE

Backbone

MS1025

Router1/10GE

MTS180

CATS 1000

SAN1/2/4G

TDM155M to 10G

MTX25502.5G

155M SMUX155

E1/T1

PABXPABX

LAN

CMGCMGOMFOMF

CMGCMGOMFOMF

G.SHDSLG.703/704

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CATS6000: 24 slotsCATS3000: 10 slots

CATS1000: 2 slots + MUX trayNew

|CATS: Converged Access & Transport System

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|Network functions

We offer following functions within CATS platform:

| CWDM/DWDM Multiplexing

| E1/T1 or other Datacominterfaces Aggregation;

| Ethernet Access and Aggregation from FE to 10 GE.

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|Smart building blocks for CATS

SMUX-GESMUX-155E1 and FE over GE/STM-1CMUX-GEGE overSTM-1

CLTTTDM

CMTS-GEEthernet delivery

10G

SFP/XFPStandard andtunablelaser

External MX/DX

CATS 6000

CATS 3000

CATS 1000

GE

FE

E1

Management SW

STM-1GE

CLCTMulti-ratetransponderup to 4G

CLXT10G transponder

CLFTMX/DX orOADM

COSTOpticalswitch

COATOpticalamplifier

Chassis 3U plugin cards Other items

MS1025External OA

TDM

CODMROADM

GEFE

GE

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CATS3000: 10 slots

Dual Power SupplySystem Controller

10 Slots for Line Cards

3U

Wavelength aggregation, Ethernet aggregation and TDM all in one platform

Only 3U high, up to 10 slots for mix-and-match

System controller may include in, or out-of band management channels

|CATS3000: Integrated Access & Transport Functions

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3U

10x CLXT 10G Transponders

Total Capacity: 100 G (10x10G) without MUX/DEMUX

|CATS 3000 Density: 3U Type

PSPS

CAC

C

Slot

1

Slot

10

8

CATS6000: 24 slots

Dual Power Supply

System Controller

24 Slots for Line Cards

6U

Same system controller, same line cards as CATS3000

Up to 24 slots for multiple transport, aggregation and service delivery functions

Star type networks for delivering 10GE, GE, Fiber channel, SDH/Sonet services

|CATS6000: Possible Expansion for CATS3000

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6U

24 slots for 10G Transponder Cards

Total Capacity: 240G (24x10G) without Mux/Demux

|CATS 6000 Density: 6U Type

PSPS

CAC

C

Slot

1

Slot

10

Slot

24

Slot

11

10

Dual Power Supply

System Controller

2 Slots for Line Cards

Only 1RU for 10GE, SDH/Sonet, or Fiber Channel service drops

Same system controller & line cards as CATS3000

Optional built-in OADM or MUX/DEMUX card

Optional MUX/DEMUX card

|CATS1000: 1RU Rack as CPE for Service Collection

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1U

2x CLXT 10G Transponders

Total Capacity: 20 G (2x10G), built in MUX/DEMUX

|CATS 1000 Density: 1U Type

CACC CLCT CLXTPSMUX/DEMUX

PSCATS1000

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PSPS

CAC

C

Slot

1

Slot

10

Transport Line Cards

CACC

Management

CLXT:10 G Transponder

CLCT:Multi-rate TransponderUp to 4G

SMUX-155:TDM & Ethernet MUX

SMUX-GE:Circuit EmulationEthernet Service Delivery

Access Cards

|CATS Transport & Access Cards

CMTS-GE:Ethernet Service delivery

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CLCT Multi-rate Line Card

CLCT Block Diagram

Line TxRxClient SFPTranspnder 1

Client SFPTransponder 2

CDR

Combining 2 transponders into 1 cardMulti-rate software configurable 100M to 4G fiber channel All SFP basedPossible to have 1 client 2 line interfaces for protection

Line TxRx

4G FC Support

|CLCT 2-in-1 Multi-Rate Line Card

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|CLTT 2-in-1 Multi-Rate Line Card

TDM

Slot 1 GE/FC

Slot 2 GE/FC

λn Single Color 2.5 Gbps

Combining 2xGE or 2x 1G FC into 1 wavelengthWorks for either Ethernet or Fiber ChannelAll SFP based Save wavelength utilization

Line TxRx

Client SFP

Client SFP

TDM

CLTT Block Diagram

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CLXT Block Diagram

Client XFPClient 10G 10GCDR

Multi-rate Available (Ethernet, SDH/Sonet, Fiber Channel)

Client side & Line side XFP

Added CLI for card level configuration

Density: 2x in 1U rack, 10x in 3U rack or 24x in 6U rack

Line XFP

|CLXT 10 G Line Card

10G

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4 or 8 wavelengths per cardCustom wavelength planC or DWDM gridSingle or double slotsMUX version or OADM

|CLFT 4 or 8 channels MUX or OADMλ1

λ8

λ1 +…+ λ8 . . .

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|CMD Passive shelf for MX/DX or OADM

|CMD-4019'' Chassis passive chassis with 40 channels DWDM 100 GHz MUX/DEMUX

|CMD-0819'' Chassis passive chassis for 4 pluggable modules of 8 channels MUX/DEMUX CFT series

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• SMUX-GE: E1/T1 and FE over GE

• SMUX-155: E1/T1 and FE over STM1/OC3

Sonet/SDH

SMUX-155 SMUX-GE

CPE

Central Office|SMUX Series Co-Exist with WDM

GE

FE

E1STM-1E1

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Pure optical layer 1+1 automatic protection

Protocol independent, regardless number of wavelengths per fiber

Compatible to CATS racks

COST

Automatic switch over in case of fiber cut

|COST Switch Card (available Q1 2008)

COST

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Pure optical amplification without OEO

Protocol independent, single wavelength or WDM versions

Adopt Dowslake SmartGAIN EDFAs

Compatible to all CATS racks

COAT Optical Amplification

|COAT Amplifier Card (available Q1 2008)

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Initial 2 degree ROADM more adapted for access/aggregation layer

Higher degree ROADM possible

Compatible to all CATS racks

CODMPass

Drop any λx, λy

|CODM ROADM Card (scheduled for 2008)

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|CMTS-GE FE Aggregation (scheduled for 2008)

Based on Dowslake MTS180

FE/GE demarcation

QoS and OAM

CMTS-GE

GE (SFP)5x 10/100GE (SFP)

2x10/100/1000

GEFE

GE

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|Packet ADM over WDM

1 pair of fibers

MTS1080/180 for Ethernet add/drop at different nodes

WDMW

DM WDM

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Protocol conversion GE over STM1/OC3

Dual links on each side for protection purpose

Maximum bandwidth 126M

Deliver GE services while fully utilizing installed SDH/Sonet network

CMUX-GE 2x STM1/OC32xGE

|CMUX-GE GE over STM1/OC3 (scheduled for 2008)

STM-1GE

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Unique aggregation platform combining WDM, Ethernet and TDM service deliveries

Compact platform from 1U to 6U types

Flexibility: user configurable data rate, or protocol

|CATS Platform Competitiveness:

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|CACC System Controller

| Single or Multiple Node Control| In band or out-of band control channels| SNMP and User Graphic Interface

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|Dowslake Network Manager

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|Dowslake Network Manager

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Ring

ADD/DROP up to 4 λ

STM-n; Ethernet, FC ADD/DROP & Ethernet, E1 services

Hub

PBX

LAN

SAN

Small node

Medium node

|Drop Ethernet or TDM services directly from WDM Ring

|Different Sizes for Different Situations

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|Disaster recovery

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|Dual homing

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|DWDM over CWDM

Cheap CWDM can grow with DWDM wavelengths:

|15 CWDM wavelengths + 8 DWDM wavelengths|14 CWDM wavelengths + 40 DWDM wavelengths

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|Conclusions

Full range of compact and cost effective xWDMsolutions.

Unique platform allowing co-existence of WDM and service delivery

Supervisory channel, optical switch, optical amplifiers come to compliment our xWDMsolution package