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O3b NetworksapproachO3b Networks is creating new opportunities for mobile

network operators and wireless ISPs by introducing a

new MEO (Medium Earth Orbit) satellite network that

makes 3G or WiMAX wireless backhaul over satellite

a profitable and efficient solution. For higher capacity

wireless backhaul, especially for 3G and WiMAX

rollouts, O3b Networks low-cost, low latency services

will allow telcos and ISPs to offer affordable, high-speed

Internet access services effectively bridging the digital

divide between developed and emerging markets. Gilat

Satellite Networks new line of MEO VSATs and

gateway components is designed specifically for O3bNetworks MEO satellite network.

The O3b Networks system offers fiber performance

over satellite, at prices comparable to fiber in developed

regions. By allowing direct connection between tier

one fiber networks and 3G Cellular/WiMAX towers, or

directly connecting your towers with your core network,

the O3b Networks system will change the economics of

telecommunications infrastructure in the worlds fastest

growing markets for communications services.

The challenges of 3G cellular backhaulWidespread demand for cellular broadband is motivating

mobile operators to roll out countrywide networks. It is

estimated that backhaul capacity for cellular networks

will need to increase four times to accommodate the

demand for 3G services. Operators are however faced

with a large initial capital outlay primarily due to the

high speed transmission backbone required. Many regions

in developing countries remain beyond the reach of

terrestrial infrastructure as costs become all the more

prohibitive to extend services to those communities.

Most of those areas are simply beyond the reach of

terrestrial infrastructure.

GSM Voice backhaul over satellite has proven to be a

cost-effective alternative when using robust compression

and bandwidth sharing techniques. However, 3G/Wimax

demands many times the bandwidth and implementation

has thus been very challenging due to the associated

space segment costs. Operators also have concerns about

the network delays introduced by transmission times to

geostationary satellites.

Benefits

Nationwide 3G/WiMAX wireless backhaulsolution for developing regions

Fiber-like transmission latency and cost

Rapid deployment, anywhere; Easy upgrade ofbandwidth for all locations as required

Automatic Dynamic allocation of bandwidthamong all towers for efficient space capacityutilization

Low transmission latency fully web 2.0compliant

Central management and control

Efficient broadband wireless backhaul

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O3b Networks MEO satellite constellation transparently

connects multiple Node B (BTS) Stations to RMCs and

also allows RMC to MSC connections via satellite without

changing the interface at either end. This enables cellular

operators to quickly expand their wireless broadband services,

even to previously unserved areas, without the dependency on

line-of-sight microwave links. Service activation and ground

equipment is scheduled for late 2010.

The O3b Networks solution includes: Gilat 3G MEO IDU at each site

Gilat 3G MEO ODU with unique dual self-pointing antenna

O3b Networks satellite constellation

Central Redundant Gilat hub at the operator MSC or at an

O3b Networks Gateway facility

Transmission capacity without the complexityThe O3b network provides quick, anywhere connectivity.

Meeting the high quality standards of mobile operators, Gilats

3G MEO terminal is an easy to install, flexible solution with

central control and real-time management. Extending services

to accommodate higher traffic loads can be done as subscribersdemand more from the network without having to visit any sites.

O3b Networks could, for example, steer an additional spot beam

over an area with existing coverage instantly doubling the

capacity without requiring additional terminals.

Expanding coverage across larger geographical areas, across

countries, or multiple islands, can be done quickly and

economically since additional sites require minimal additional

infrastructure and almost no backhaul transmission planning.

The O3b Networks satellite constellation will enable Mobile

Data, Video and Voice services with capacities that far outstrip

microwave & leased line whilst removing the need for Fiber or

terrestrial back-haul infrastructure.

Lower latency for better performanceNewer 3G protocols (EVDO Rev. A/LTE/HSDPA) all have

improved their latency by 5-10 times. With O3b Networks,

operators can keep this important advantage because the

system natively offers low latency performance. Low latency

of less than 65ms for voice and video transmissions allows for

centralization of core networking equipment. The network can

support many topologies to eliminate double hops for traffic.

This brings new efficiencies for the network while improving the

quality of the voice transmission. Even if the signal traverses adouble hop, to the O3b Networks gateway and then back, the

shorter uplink to a MEO satellite means that the total round trip

takes no more than 130ms fully within the requirements for

ITU voice signals and cellular broadband backhaul.

Bandwidth on DemandAs opposed to traditional satellite solutions such as SCPC,

which occupy permanent bandwidth regardless of actual traffic,

Gilats 3G MEO terminal uses Bandwidth on Demand (BoD)

to dynamically allocate bandwidth. The result is significant

space segment savings and more efficient utilization as the

geographic demands on your network shift from tower to tower.The bandwidth controller, located at the Gateway, continuously

monitors traffic generated by each terminal, allocating

bandwidth from a common pool to each 3G MEO VSAT

according to real-time demand. Second and third bandwidth

controllers, along with added space segment capacity can easily

be added to double or triple the capacity to your system as your

subscribers increase.

Using BoD presents a major advantage over traditional satellite

technology, which uses a predefined busy hour to determine

permanent bandwidth required to ensure satisfactory service. BoD

results in up to 80% savings in space segment usage.

Comparison of typical 3G site setup costs

With O3b Networks the costof deploying a new 3G siteusing satellite backhaul issignificantly lower than thetraditional GEO satellitebackhaul.

The cost of the O3b based3G site will be comparableto that of microwave basedbackhaul without line ofsight constraints or theneed for proximity to fiberinfrastructure

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Microwave radio-based network connections

Special events and emergency coverageMobile Operators that need to provide additional coverage

and capacity for special events often have to conduct timely

and expensive line of sight surveys, lengthy planning,testing and integration to offer services in a relatively

small commercial window. In many cases, the pressure to

provide the additional capacity is to reduce churn, increase

brand awareness and with minimum overall commercial

benefit. With O3b Networks and Gilat you can instantly

add capacity virtually anywhere on new towers within

the coverage area with no line of sight surveys or other

restrictions. This reduces the operational burden of

setting up for special events but also allows the operator to

deploy the system at short notice where services have been

interrupted or in the event of a major outage such as natural

disasters etc.

O3b Networks satellite-based network

Network simplification centralized coreMulti-Country mobile operators can use the O3b Networks

Satellite system to simplify the network architecture

into a single core and then mange base stations across

borders. The switching and routing intelligence of mobile

infrastructure is moving steadily to the edge of the network.

When this is combined with O3b Networks unique ability

to backhaul aggregation nodes to switching centers (with

ultra low latency) the economic advantages of a centralized,

single core network architecture in multi-country mobileoperations yields a significant OPEX advantage. The O3b

Networks satellite system heralds a previously unavailable

opportunity to consolidate your assets into a single core

network.

Summary - next generation backhaul for 3G systemsAs Mobile Operators continue to enrich the users experience

with higher data rates in WCDMA, CDMA, & WiMAX

the requirements of Aggregation Nodes are becoming

increasingly diverse with multiple client interfaces, traffic

types and increasing bandwidth. With link capacities scaling

from 1Mb to 10Gb, the O3b Networks satellite systemenables mobile operators to upgrade the backhaul to match

the high bandwidth access network. This unique advantage

will allow Mobile operators to avoid the severe bandwidth

and line of sight limitations of microwave, aggregate more

traffic and reduce the number of aggregation nodes in the

network. O3b Networks and Gilat continue to work with

Mobile Operators all over the world that are planning to

offer higher access speeds and extend the geographic reach

of networks to enable more access for the Other 3 Billion.

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Outbound Carrier

Standard DVB-S2

Carrier rate 45 - 60 Msps

Modulation QPSK, 8PSK, 16APSK, 32ASPK

Coding Viterbi & Reed Solomon (DVB-S) or LDPC & BCH (DVB-S2)

FEC rate 1/4, 1/3, 2/5, 1/2, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10

Inbound Carrier

Channel Rates 128Ksps-2.56Msps

Access Scheme MF-TDMA DVB-RCS Based

Bit rate 6 - 10 Mbps (Supporting different bit rates for different work groups)

Modulation QPSK, 8PSK

Coding (RCS Based) Turbo coding FEC 1/2; 2/3; 3/4; 4/5; 6/7

Outdoor Unit

Operating Temperature -40 to +60 C

Humidity Up to 100%

Transmitter ODU 1W and 2W Ka-Band

LNB Standard TVRO type

Indoor Unit

RF Input/Output Two F connectors, 75

femaleData Interface 1 x Ethernet 10/100BaseT

Operating Voltage 100-240V AC or 10-59V DC

Power consumption Less than 20W

Security AES-128 encryption

IP Features

Enhanced IP features RIP, IRDP, DHCP, NAT/PAT, IGMP, IP prioritization, ACL, VLAN, DiffServ, IPSec

Other Features Bandwidth on Demand, TCP & HTTP acceleration, Multi-Level QoS

Mechanical / Environmental Conditions

Size (WxHxD) 156x56x165 mm

Weight 0.93 Kg

Operating Temperature -5 to +50 C (optional -40 to +60 C)

Storage Temperature -40 to +70 C

Relative Humidity Up to 90%

Corporate HQ (972) 3 925 2000 Australia (61) 3 9866 6877 Brazil (55) 21 2142 6600 China (86) 10 6510 2838 Colombia (57) 1600 3434 (114) India (91) 11 2922 5478/6 Indonesia (62) 21 526 7670

Kazakhstan (7) 327 259 6575 Mexico (52) 55 110 016 00 North America (1) 703 848 1000 Russia (7) 495 981 0965 South Africa (27) 12 344 0240 Thailand (66) 2 634 1780 www.gilat.com

3G MEO VSAT Technical Specifications

The Gilat logo is a trademark of Gilat Satellite Networks Ltd. or its subsidiar ies. This brochure is provided for informational p urposes only. The details contained in this document, including product and feature

.specifications, are subject to change without notice a nd shall not bind Gilat to a specific product or set of features related thereto. DVB is a registered trademark of th e DVB Project