RADWIN 2000 Product Overview

RADWIN 2000 – General Overview High-Capacity Backhaul You Can Trust  Carrier-Class Point-to-Point radio for best performance in sub-6GHz bands  Native TDM and Ethernet over single wireless link (up to 16 E1s/T1s)  High Capacity – 100 Mbps net throughput (50 Mbps full-duplex)  Extended Range - up to 120km/75miles  Monitored Hot Standby 1+1 Support

RADWIN 2000 – General Overview (cont.)  Advanced Air Interface – optimal performance in sub-6GHz bands through use of MIMO, OFDM & Diversity technologies together with RADWIN’s proprietary air interface  Multi-band Radio – increased field flexibility and reduced operational costs  2.4 GHz & 4.8 – 6.1 GHz over single platform  Superior Spectral Efficiency at 20MHz channel - enabling high capacity services in crowded spectrum and significant spectrum savings  High Tx Power of 26 dBm - high performance with smaller antennas

Total Net Throughput (Full-Duplex) 4

TDM Performance Typical performance at 5.8GHz with 99.99% availability 5

RADWIN 2000 Applications Access for Large Corporations & Institutions High Capacity Private Networks Cellular & IP Backhaul 6

7 Access for Large Corporations RADWIN offers a Corporate Connectivity Portfolio for organizations of any size  WinLink 1000 Access – for small enterprises  WinLink 1000 – for medium-large enterprises  RADWIN 2000 – large to very large enterprises, up to 16 E1s/50 Mbps per customer!

8 High Capacity for Private Networks RADWIN 2000 – the solution for High-Capacity Private Networks  Large corporations  Campuses, health organizations and data-intensive public institutions

9 Backhaul with RADWIN 2000 The ultimate high-capacity backhaul solution  Providing backhaul for any access solution: WiFi, Point-to- Multiple-Point, Multiple Point-to-Point, etc. Access Hub

Cellular Backhaul

The RADWIN Backhaul Advantage High-Capacity Wireless Sub-6GHz Solution  Low CAPEX  Very competitive price  Low OPEX  Easy to install and maintain (1 person, 1 hour)  Fewer towers, fewer links  Instantly Deployable – Immediate Revenue  License free – no license fees, no trenching

The RADWIN Backhaul Advantage (cont.) One Solution, One Link, One Platform  Robust & Reliable  Operates in all environments & terrains  Industry-leading MIMO, OFDM & Diversity technologies  Field-proven air interface for optimal performance  Monitored Hot Standby 1+1 Support – backup link ensures 24x7 service continuity and revenue flow  Flexible  Multi-band radio – one platform, multiple frequency bands  Complies with international regulations  Native TDM & Ethernet in one solution  Seamless migration from TDM to IP  Can be deployed in various topologies & configurations (PtP & Multiple Point-to-Point)

Multiple Point to Point w/ HSS (Hub Site Synchronization)  RADWIN 2000 can be deployed in unique Multiple Point-to-Point configuration  Dedicated bandwidth to as many as 16 dispersed sites  Hub Site Synchronization (HSS) unit synchronizes transmission between collocated radios  Synchronizes Tx and Rx timing for all units in hub site  Eliminates collocation TDD interference  HSS between  RADWIN 2000 radios  WinLink 1000 radios  RADWIN 2000 and WinLink 1000 radios

HSS Applications  Backhaul  HSS is needed in installations where RADWIN 2000 is the backhaul for lower capacity access links  The backhaul link can be synchronized to the access links to mitigate potential interference  Access and Corporate Connectivity  Where links originate from a common hub site  RADWIN 2000 w/ HSS supports high capacity connectivity

Dealing with Interference  Multi-band radio  Automatic Adaptive Rate  Automatic Channel Selection (ACS)  Automatic Repeat Request  Forward Error Correction  Configurable Jitter Buffer  Spectrum Viewer  Directional Antennas  MIMO OFDM based air-interface, enabling nLOS deployments and achieves best spectral efficiency  Spectrum Viewer

Multi band radio  Multi band radio supports multiple frequencies on same platform – ensures maximum transmission resiliency  Utmost field flexibility

Automatic Adaptive Rate  RADWIN 2000 changes air interface rate and modulation dynamically, depending on radio link conditions  Benefits:  Maximization of Ethernet throughput  Enhanced robustness  Better performance in interference

Automatic Channel Selection (ACS)  Automatic selection of “best-quality” channel for transmission  Enhanced robustness and higher performance

Automatic Repeat Request (ARQ)  Patented mechanism that ensures super-fast retransmission of errant data  Repeat transmission is initiated without having to wait for a request from the remote unit  The system minimizes either the latency or the error rate to optimize performance for the type of services being delivered

Forward Error Correction (FEC)  FEC detects and corrects errors in the receiver  Ensures fast, robust and error-free communications

Jitter Buffer  By configuring the Jitter Buffer, the receiver jitter buffer for each site can be enlarged, thereby increasing resistance to interference  Decreasing the Jitter Buffer decreases system delay  Jitter Buffer can be configured between 2.1 and 16.0 milliseconds

Spectrum Viewer  Spectrum Viewer is an RF survey tool that simplifies link planning & installation by graphically displaying “cleanest” channel  The tool provides the following information:  Spectral measurement of two antennas per site  Spectral power measurements in 5MHz channel resolution  Indication of radar-free channels (for DFS bands)  Indication of bands selected for ACS

Spatial Multiplexing MIMO  MIMO = Multiple Input Multiple Output  A high rate signal is split into multiple lower rate streams and each stream is transmitted from a different transmit antenna in the same frequency channel. Streams merged into one signal TX Lower rate streams High rate signal RX

Diversity  Antenna diversity  Uses two antennas to improve the quality and reliability of the link  Each antenna experiences a different interference environment  The system chooses the best received signal providing enhanced robustness  Antenna diversity requires antenna separation, possible by two methods:  Polarization Diversity - combines a pair of antennas with orthogonal polarizations  Spatial Diversity - employs antennas that are physically separated from one another

Diversity vs. MIMO with RADWIN 2000 Diversity Capacity 25 Mbps MIMO Capacity 50 Mbps

Monitored Hot Standby 1+1  Providing backup to TDM services in the event of:  Equipment failure  Loss of air interface  MHS 1+1 ensures high network availability & revenue flow  Automatic switchover from the Primary link to the Secondary link in less than 50 msec  Automatic restore to primary link as soon as it becomes available  Backup for up to 16 TDM services for RADWIN 2000 & 4 TDM services for WinLink 1000  Affordable SLA can be offered by protecting part of the RADWIN 2000 trunks with WinLink 1000

Monitored Hot Standby 1+1 Architecture  Primary & Secondary links can transmit on same or different frequency channels  RADWIN 2000 & WinLink 1000 links can be used interchangeably  Using a primary link and a secondary link:  Two RADWIN 2000 links  A RADWIN 2000 link and a WinLink 1000 link with new IDU-C  Two WinLink 1000 links with new IDU-C (single dual-pole antenna can be used)  Simple architecture & easy installation

RADWIN Network Management System (RNMS)  Manage up to 10,000 RADWIN links from one location (NOC)  Proactive real-time monitoring using performance graphs, trend reports and threshold alarms  Complete visibility & control over RADWIN-based network  Interface to any SNMPc device  Auto-discovery feature – discovers all RADWIN links in the network automatically, within minutes  Available in Enterprise & Platinum packages

RADWIN 2000 Roadmap

RADWIN 2000 LA Release 2.4  Tentative release date: Q4/09  New products supporting up to 100Mbps Asymmetric throughput Tentative !!

Thank You