The document discusses the increasing demand for wireless backhaul solutions driven by the explosive growth of mobile data traffic and the transition to 4G/LTE networks. It highlights the need for operators to enhance their network capacity and infrastructure to meet the requirements of modern mobile communication while managing the operational challenges associated with this transition. Aviat Networks is positioned as a leader in providing technologies for efficient IP network migration and backhaul solutions.

1. Wireless backhaul solutions Enabling the 4G/lte futureip Mobile backhaul solution

2. Global Broadband Data ExplosionMobile subscriber growth1B to 3.5B subscribers in 3.5 YearsMore Mobile lines than fixed in the developing worldDemand for Smart phonesData traffic volume from mobile devices growing by more than 10X per yearBroadband video will drive 80% of mobile trafficJANUARY 28, 20102AVIAT NETWORKS |Backhaul capacity expansion is required Source: Yankee Group

3. The Operators' DilemmaOperators must expand their market reach and introduce new differentiated servicesTheir Networks need to be upgraded to keep up with Smartphone driven data demand and prepare for 4G/LTEHowever they often lack time, and internal resources and expertiseJANUARY 28, 20103AVIAT NETWORKS |

4. The Broadband Data Explosion – the AT&T experience6,732% growth in traffic in past 13 quarters3% of users generate 40% of trafficAdded 2,000 new cellsites and 100,000 backhaul circuits in 2009JANUARY 28, 20104AVIAT NETWORKS |Sources: Ralph de la Vega, AT&T, New York December 9, 2009

5. More and More CellsitesNearly 1 million new sites worldwide by 2013Fiber is the natural choice for LTE backhaul, but connects less than 20% of sites todayCopper lines will not provide the capacity scalability neededMicrowave is the natural choice for sites where fiber cannot reach economicallyJANUARY 28, 20105AVIAT NETWORKS |Source: Ovum, Wireless Backhaul Forecast 2009-2015, November, 2009

6. More and More CapacityBackhaul capacity growth for high-demand urban cellsite is129% CAGR25 Mbit/s today to up to 300 Mbit/s in 3 yearsJANUARY 28, 20106AVIAT NETWORKS |Source: Morgan Stanley, The Mobile Internet Report, December 15, 2009

7. The Mobile Internet Tsunami meets the Backhaul BottleneckBackhaul is the central battleground for LTE network migrationEven now backhaul is not meeting the demand of 3G/HSPALTE backhaul requirements are still not well understood by operatorsJANUARY 28, 20107AVIAT NETWORKS |

8. Mobile Backhaul Networks Must EvolveMobile backhaul networks must evolveMaintain essential high- quality TDM voice servicesGradual migration path to all-IP for next generation 4G/LTEJANUARY 28, 20108AVIAT NETWORKS |TransitionMaintainTransform

9. Evolved Mobile Backhaul NetworkJANUARY 28, 20109AVIAT NETWORKS |Primary Reference Clock , 1588v2 MasterNxE1/DS1 TDMEthernet/IP~BSC~IP/Eth/MPLSHybrid TDM + Ethernet/IP~~~MMEMGWIP/EthernetMPLS R4LTE CORE~~aTLA~2G/3G/LTE/WiMAXRNCSync EthernetS-GW~~BSCCellsite GatewayAggregation Gateway~~~Distributed Sync Delivery PointMetro/Core Gateway1588v2 Slave~COREACCESS/LOW-RANAGGREGATION/Hi-RANMETRO

10. The Wireless Experts in Advanced IP Network MigrationAviat delivers best-of-breed technologies and has a well earned reputation for working by the side of its customers as they evolve their wireless infrastructure into an advanced IP networkJANUARY 28, 201010AVIAT NETWORKS |

11. Innovation is in our DNAWe helped build the world’s mobile communication infrastructureNow we are solving the toughest problem for next generation mobile networks – the evolution to all-IP backhaulJANUARY 28, 201011AVIAT NETWORKS |

12. 4G Wireless Backhaul for 4G Networks Our Eclipse™ Packet Node platform combines a smooth migration path with LTE-readinessConsistently rated #1 by Tier 1 operators worldwideJANUARY 28, 201012AVIAT NETWORKS |

13. Eclipse™ Packet NodeHighly scalable capacity throughput to 2 Gbit/s to meet the demands of LTEHybrid TDM+Ethernet or all-IP transportEfficient nodal architecture simplifies networks and lowers operational costsEmbedded Ethernet/IP intelligence and QoSUltra reliable with proven field performanceJANUARY 28, 201013AVIAT NETWORKS |

14. Microwave Backhaul Capacity EvolutionJANUARY 28, 201014AVIAT NETWORKS |Payload, Mbit/s2,000EclipsePacket Node1,000MetroTransport620Eclipse380200155Access Backhaul406561140270907/82318Frequency Band, GHz

15. A Multi-Service, Multi-Architecture platformAll-TDM (E1, E3, STM1)Hybrid TDM+IPAll-IPSplit-mount or all-indoor architecture optionsTerminal, repeater or complex nodesFull protection optionsJANUARY 28, 201015AVIAT NETWORKS |All Indoor RF Unit (IRU, US only)Compact OutdoorRF Unit (ODU)Modular Indoor Unit (INU)

16. Gigabit IP transport for 4G/LTE NetworksThe only microwave transport platform to provide a complete convergence solutionHighest nodal switching capacity Highest radio throughput on the market Hybrid or pure-packet transportIncreased packet intelligenceEthernet aggregation and OAM‘Distributed Sync’ over all-IP networksIntegrated timing over packet networksJANUARY 28, 201016AVIAT NETWORKS |

17. Eclipse Intelligent Node UnitThe most compact nodal solution on the marketSingle indoor unit supporting multiple radio pathsHot-swappable radio and data access modulesSupport for all traffic typesCable-less traffic connectionsComplete solution in one boxJANUARY 28, 201017AVIAT NETWORKS |

18. Multi-Service GatewayJANUARY 28, 201018AVIAT NETWORKS |CopperCarrierEthernetFiberRadioTDMoIPPWENativeTDM

19. Eclipse Packet Node Hybrid ArchitectureJANUARY 28, 201019AVIAT NETWORKS |500 Mbit/sDAC 16xNative TDM1-16xE1/DS1RAC 6X500 Mbit/s2 Gbit/sRAC 6XNCMTDMoIP1-16xE1/DS1500 Mbit/sRAC 6X500 Mbit/sDAC GENative Eth/IP1-4xGigERAC 6XINUe

20. The Leading Nodal Packet Transport PlatformMulti-gigabit aggregate nodal switching capacityNext-generation Layer 2 Ethernet switchEnhanced traffic processing for maximum throughputAdaptive Coding and ModulationNext generation modem technologyCo-channel operation with XPICJANUARY 28, 201020AVIAT NETWORKS |

21. The Key Solution for IP Wireless Network EvolutionManage your explosive packet traffic growth with industry leading transport capacityExtend your investment With seamless and low risk network migration, with continuity of existing TDM servicesSimplify your Network With a converged backhaul/transport solutionReduce capital and operational network costsJANUARY 28, 201021AVIAT NETWORKS |

22. AVIATNETWORKS.COM