Game On for PON

John Ridder, Lead Technology DesignerGarmann/Miller Architects-Engineers

Today’s TopicsWhat is a PON?

• Case study: Why consider an

enterprise PON network?

• Energy efficiency gains

• Sustainability and longevity

Welcome!2019 AEP Ohio Summer Customer Seminar

Server Room Strategy

11:20 a.m. Session

Tuesday, July 16

What is a PON?

PON is short for Passive Optical Network

PON is a widely deployed network topology that recently has been

optimized for use in an enterprise network environment.

Are PONs widely used?

Virtually every independent telephone company in the United States has

deployed some kind of PON technology and also Verizon, AT&T, etc.

U.S. Army standardization on PONs; use of traditional Ethernet switch-based

network topology requires a special waiver.

Who else has a PON?

Upcoming Garmann/Miller PON projects

• SW Licking Local Schools has committed to six PON based building

networks in both new and renovated buildings

• Elida City Schools has committed to a new elementary school

building with a PON based network

• New 7-12 project; 123,400 SF,

two-story building

• PK-6 renovation; addition

104,653 SF existing, 14,500 SF

addition (PK-K wing)

Case Study: Fostoria City Schools

• PK-6 has no existing dedicated

technology spaces, existing

pathways were inadequate.

• Challenge: Retrofit PK-6 with Ohio

School Design Manual conforming

technology elements that are fully

integrated with core systems in

new 7-12 school building.

Case Study: Fostoria City Schools

PK-6 Solution

• Provide a PON network in ceiling-mounted

telecommunications enclosures powered

by a centralized DC power plant.

• This PON network is fed by an 11 RU optical

line terminal in high school building since a

PON supports a 12-mile reach.

• No telecommunication rooms in PK-6.

Case Study: Fostoria City Schools

7-12 Solution

• Provide a PON network in ceiling-mounted

telecommunications enclosures and wall-

mount optical network terminals powered

by a centralized DC power plant.

• PON network is fed by same 11 RU optical

line terminal serving the PK-6 building.

• There is one main equipment room in 7-12.

Case Study: Fostoria City Schools

• Existing high school to be

renovated and brought into PON

network as budget permits.

• Existing traditional network will be

connected to core switch in the

new 7-12 building via single mode

fiber in the intervening period.

Case Study: Fostoria City Schools

Results

A single PON network serves entire campus:

• Cisco chassis-based network core switch

with WAN/Internet connections

• Cisco call manager telephone platform

• Centralized NTP server-clock system

• Ruckus 802.11ac wireless network

• BenQ interactive flat panel A/V system

• Samsung–Wisenet CCTV platform

• S2 security and access control system

Case Study: Fostoria City Schools

Case Study: Network Elements

2 AWG

48VDC

SM fiber PON

port

32 port PDU

48VDC

32 port optical splitter inside

telecommunications enclosure

18/2 AWG

48VDC

SM fiber PONsplitter port

output

Optical line terminal in main ER

48 VDC rectifier plantOptical network terminals

Case Study: Network Elements

• Assumptions: 40-50% of network drops employ use of Power

over Ethernet (PoE) in K-12 networks

• Traditional networks require significant power conversions

and conditioning to operate reliably.

• PoE over category cabling; delivers power at 48 volts DC

to IP CCTV cameras, IP phones, Wi-Fi access points,

security hubs, etc., experience large voltage drops due to

the small conductor wire gauge (23 AWG pair[s]).

• As much as 15% of the PoE energy is wasted in

unavoidable voltage drops.

Case Study: Energy Efficiency Analysis

Typical Telecommunications Closet Powering

480V 3 phase

480V-208V Transformer

UPS

Double ConversionUPS

208V-120V Transformer

PoE Ethernet Switch120V AC-48VDC Power Supply

Copper Horizontal

Cabling to IP Endpoints

Building

entrance

power

3-4%

conversion

loss

8-10%

conversion

loss

3-4%

conversion

loss

3%-4%

conversion

loss

3% voltage drop loss

(PoE 16W, nominal 150 ft

Cat 6 drop)

Typical Telecommunications Closet Powering

The typical network powering scheme

experiences a best case 20% total loss on

every watt of power delivered to the

closet by the main service panel.

20% ... 7 x 24!

Inherent PON DC Power Plant Efficiencies

480V 3 phase

Copper Horizontal

Cabling to IP Endpoints

Building

entrance

power

3%-4%

conversion

loss

1% per Cat 6

channel voltage

drop loss

1% conversion loss

1.5%

per Cat 6 channel

voltage drop loss

1% voltage drop

loss (PoE 16W, nominal

60ft Cat 6 drop)

48VDCRectifier

BatteryStrings

Power Distribution UnitProvides up 32- 100W outputs

Category 6Drops

0% conversion loss

Optical Network Terminal (ONT)

Typical Telecommunications Closet Powering

The typical centralized DC powering

scheme experiences a best-case 7% total

loss on every watt of power delivered to the

closet by the main service panel.

A 13% efficiency gain … 7 X 24!

• An entire campus (up to a 10-mile radius) can be served by a single PON system.

• A typical 100,000 SF building has a main equipment room and 2-3 technology rooms (TRs).

o Mini-split AC unit

o Emergency power/battery backup

o 80-100 square feet of floor space

o Security

o Cabling pathways for termination of backbone, horizontal cabling

Additional Efficiencies

With a PON, 100% of these TR rooms can be eliminated yielding

energy savings with the loss of AC units and downsized generator

requirements while reducing building capital costs and opening up additional architectural space.

1. Optical fiber is a greener product than copper for cabling.

2. Reduced pathway sizes economically superior, requires fewer resources.

3. Provide a meaningful reduction in energy consumption by technology infrastructure.

4. Unlike traditional networks where forklift upgrades every 10 years are the rule, PON

standards allow for incremental upgrades only where additional capability is needed.

5. Cabling infrastructure supports every PON standard in single fiber strand concurrently.

6. PON equipment is carrier-grade which has approximately double the mean-time

between failure of typical enterprise-grade network equipment and not manufacturer

discontinued as quickly.

Sustainability & Longevity

No single network topology is the perfect answer.

PON networks are an excellent choice for:• K-12 schools

• College campuses

• Manufacturing/distribution facilities impacted

by 300-foot traditional network distance limitations

• Hospitality industry

• Hospitals

• Organizations with 512 or more data drops

PON networks are not the answer for:• Organizations with less than 512 data drops

• Churches

• Data centers

Sustainability & Longevity

What questions do you have?

Thank you!