•Redundant- Every POP has at least 2 paths to the backbone

•Self-healing

•Same design in Greater Providence/Newport

Wireless Ring

Greater Boston

Coverage

Over 90 % penetration rate

Greater Providence Coverage

Over 90 % penetration

rate

Company Profile

• T1 (1.5 Mbps)- T3 (10 – 45 Mbps) market.• Hundreds of business customers.• About 20 employees.• Use mostly 5 GHz spectrum.• Founded in October 2000 & self-funded.• Major deployment of 2nd Generation Fixed-

Wireless P2MP (Aperto Networks) and P2P (Western Multiplex).

Customer base

• 4 TV stations • 3 Universities• 4 law firms • 2 hospitals,• 12 biotech

companies• 6 banks

• 12 engineer/consultant

• 7 Financial Services• 3 Non-profits• 3 construction cos.• 3 city/towns• And a major donut

conglomerate

Customer base

• From MIT Lincoln Labs concerned with separate egress for disaster recovery …

• To abandoned urban businesses that are too far from a D-SLAM or outside of Cable

• Or who simply want good service at a great price

More Broadband, Lower Costs

• TowerStream offers customers lower costs and greater reliability than traditional wire line networks

• TowerStream offers better reliability and security

• TowerStream can deliver service quickly

• No phone company. Total bypass.

Fixed-Wireless Has Arrived

• Second-generation point-to-multipoint fixed wireless broadband network

• As reliable as a wired T1• Weather does not affect performance• Security equal to or greater than a

wired T1

Maximum Broadband

• Services– T-1: .5 - 10 megabits per second

(Mbps) – T-3: 10 Mbps up to 45 Mbps per

second– Custom: Up to Gigabit speeds

Our SLA

• TowerStream is among the first companies to offer a Service Level Agreement on the last mile

• Our SLA:– 99.99% network availability– Latency guarantee < 75ms round trip delay on

TowerStream Network– Latency guarantee < 50ms round trip delay on last mile – Packet loss guarantee < 1% on backbone

• Our wireless ring network assures redundancy

Disaster RecoveryTrue Separate Egress

• No wires to cut- Back-hoe proof!– Wire line redundancy solutions are

susceptible to having both lines cut by road crews, careless electricians, etc.

– TowerStream supports BGP (Border Gateway Protocol) for seamless, real-time back-up

Flexible Bandwidth on Demand

• TowerStream technology is flexible enough to allow for immediate increases of bandwidth depending on your needs –

• From .5 to 10 Mbps • From 10 to 45 Mbps • In increments as big or small as you

need.

TowerStream Security• 56-bit hardware assisted data encryption standard (DES) and Media

Access Control (MAC) authentication.

• This means Data is encrypted before sending on each side then decrypted whenreceived.

There are also some other challenges that make a FIXED wireless link harder to break than a wire connection.

• Relative physical proximity to the CPE (roof access).

• Extensive RF hardware and software (very expensive).

• Extensive RF knowledge

• Cracking both DES and the state-of-the-art spreading and modulation schemes such as QPSK and 16QAM which are also additional native encryption.

Up and Running

• TowerStream installation takes between 10 days and 2 weeks

• Traditional T-1 installation can take up to 2 months

0 2 4 6 8 10

Weeks

Traditional T-1 TowerStream

Things that are working well

• Spectrum is truly weatherproof.• New generation equipment works

well.• Saving spectrum by making our

network. available to other providers as resellers and wholesalers.

On the horizon…

• As spectrum use increases, we hope to get FCC direction regarding spectrum “etiquette.”

• Priority given to first-in providers.• And protection from malicious 3rd

parties who intentionally interfere.