Optical Access for Business Services

Choosing the Right TechnologyChoosing the Right Technology

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Market Trends in Business Services

• Carriers have developed a “think fiber first” mindset– Service quality/reliability– Growth potential/scalability

• Investment is accelerating in fiber access– Fiber penetration has more than doubled in last 5 years– Solutions must be fiber-ready

VSG 2010

Fiber penetration has doubled in last 5 years to U.S. Commercial Buildings with 20+ employees

Business Fiber Trend% of Commercial Buildings with 20+ Employees

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Drivers for Optical Access

Smart Phones, Video, new apps are stressing backhaul infrastructure

Fiber access offers improved scalability and reliability

Fiber plant constraints addressed with WDM or PON

Pseudowire emerging as legitimate TDM transition option

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Key Attributes for Optical Access

Low Cost, Highly Scalable Bandwidth– Ethernet, TDM

Time to Market for Service Ubiquity – Ethernet, TDM, Copper

Service Convergence– Path to all-packet architecture

SLA Management – CoS support e.g. Real-time vs. Best-Effort

Resiliency – 99.99+% service availability

Hardened solutions for outside plant deployment– Robust operating range, metallic interface protection

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SONET / SDH

Ring

Point-to-Point Notes:

• Dedicated bandwidth per service interface

• Deterministic transport performance• ‘Single’ Class of Service - guaranteed• Very mature OA&M capabilities• Ideally suited for TDM transport

• DS1/E1 VT1.5/ VC-2• DS3/E3 STS-1/ VC-3/4

• Adapted for packet based transport• 10/100 Mbps GFP VT/VC• GE/ 10GE GFP STS/VT/VC

• Modular, ‘carrier grade’ architecture

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Ethernet over Fiber

Ring

Point-to-Point Notes:

• Possibility for shared bandwidth per service interface or trunk

• Engineered transport performance• Multiple Classes of Service• Emerging OA&M capabilities• Ideally suited for packet based

transport• Adapted for TDM based transport

• DS1/E1 PWE3/CES• DS3/E3 PWE3/CES

• Modular architecture• Emerging ‘carrier grade’ architecture

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GPON

Point-to-Multipoint Notes:

• Shared bandwidth per service interface

• Engineered transport performance• Multiple Classes of Service• Emerging OA&M capabilities• Ideally suited for low bandwidth, best

effort packet based transport• Adapted for TDM based transport

• DS1/E1 PWE3/ CES• DS3/E3 PWE3/ CES

• Typically fixed access architecture• Emerging ‘carrier grade’ architecture

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Technology Comparison

Technology SONET/ SDH Ethernet over Fiber

GPON

Availability•Ability for network to survive failures

Highest High Medium

Reliability•Ability to detect and react to local faults

Highest High Medium

Packet Efficiency•How efficiently Ethernet is carried

Medium Highest Highest

TDM Efficiency•How efficiently DS1/E1, DS3/E3 is carried

Highest Medium* Medium*

Performance•Tools to monitor error rates•Capabilities in testing/ reporting

High Medium** Medium**

Cost per bit•Overall cost to transport service

High Medium Low

* Pseudowire solutions available for DS1/E1** Ethernet OAM standards are maturing

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Technology Tradeoffs for Today’s Solutions

Co

st p

er b

it

PerformanceLower Higher

Lower

Higher SONET/ SDH

Ethernet over Fiber

GPON

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OPTI 6100 Family of Systems

MX chassis

4 Line Card Slots

Wall or rack mount

28 DS1, 6 DS3, Ethernet

OC-3, OC-12, OC-48

12 Line Card Slots

Wall or Rack mount

84 DS1, 12 DS3, Ethernet

OC-3, OC-12, OC-48

24 Line Card Slots

Rack mount

336 DS1, 48 DS3, OC-3, OC-12

Ethernet

OC-48

SMX chassis

LMX chassis Network interfaces (OMM)– OC-3

– TM, UPSR, 1310 nm IR and LR, w, w/o XC, ADM, 1550 LR– OC-12

– TM, UPSR, 1310 nm IR and LR, w, w/o XC, ADM, 1550 LR– OC-48

– Linear, UPSR– SFP based

Low-speed (tributary) interfaces– DS1 (28 ports, M13, or VT1.5 mapped)– DS3 (3 port)– OC-3 (1 port, 2 fiber, SFP)– OC-12 (1 port, SFP)– Ethernet (10/100) (3 ports)(8 ports w, w/o tagging)– Transmux (1 port and 3 port)– GigE (copper, SM, MM, SFP)

Tilt-down Wall Enclosures for MX and SMX application

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Advanced Ethernet Modules

Applications• EVPL service with VLAN separation of

customer traffic• ELAN service with VLAN separation of

customer traffic

Applications• EVPL service with VLAN separation of

customer traffic• ELAN service with VLAN separation of

customer traffic

OPTI-6100

GigE

OPTI-6100

OC-12/48 SONET Ring

Router VLAN1

VLAN2

VLAN3

GigE or 10/100 HO/LO

VCAT

Customers

VLAN trunk

OPTI-6100

VLAN1

VLAN1Customers

Shared VCG

Individual VCAT Groups

Individual VLANs in shared VCAT Group

vs.

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Ethernet over Fiber Components

TA5000 8-port Gigabit Ethernet Access Module– 8 GigE SFP cages– Link Aggregation– Link OAM

NetVanta 8044M – 4 -10/100/1000BaseT WAN or LAN– 4 - GigE SFP WAN or LAN– 2 - Expansion Slots – 1 and 2.5G ERPS Ring support with optical bypass option.– Clock Sync over Packet Ready e.g. G.8261/62 SyncE– Dual fed DC options (+/-24V, -48V DC)

Carrier Ethernet– MEF 9, 14, 18– Eth OAM CFM and PM– TACASC+ and RADIUS Authentication, Authorization

8-port GigE Access Module NetVanta 8044M Modular NTE

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CarrierEthernetNetwork

Leverage Fiber Assets with CWDM

Central Office/ Exchange

GigE

10/100/1000 8xDS1 & Clock Sync

10/100/1000 8xDS1 & Clock Sync

CellSite

CellSite

8 portEoFiber

AM

CWDM

Modular NTENV8044M

NV8044M Modular NTE

NetVanta 8044M 8 port PW Service Module

DS1

2xGE or 2x10GE TA5000 MSAP

TA5000 MSAP

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Total Access GPON Solution

Total Access 5000 OLT – GPON 2-Port Optical Line Terminal– 21 OLTs/42 PONs per Total Access

5000 1,344 SUBs

– 2.488 Gbps downstream,1.244 Gbps upstream

– Completely GEM based

Voice support via SIP

GPON Optical Network Terminals– SFU—Support for triple-play delivery

2 POTS, 1 Ethernet port 2 POTS, 2 Ethernet ports Voice, HS data, IPTV

Total Access 5000

GPON OLT

TA35X

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Total Access 372 SBU

Total Access 372–SBU ONT– 8 POTS, 2 Ethernet, 4 DS1

Loop and Ground start 10/100/1000Bt Ethernet

– TLS Support– MEF Compliant (future)

DS1 PWE– GR950 Compliant Enclosure– GPON and Active Versions

372 - SC APC GPON 372E - SFP Active Ethernet

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Conclusions

Fiber the preferred access media for business services Choices available, each with its own set of strengths and

weaknesses– SONET/ SDH

The most mature Ideally suited to TDM services Comparatively expensive

– Ethernet over Fiber Suitable for packet based services over a wide range of speeds Moderate cost Excellent scalability

– GPON Ideally suited to services up to 100Mbps Can be engineered for business services Lowest cost

Choice of technology is dependant upon service needs and cost objectives