1. Symmetricom Corporate Overview April, 2011

2. Symmetricom at a Glance • Global business for critical timing, frequency and synchronization solutions • Head-quartered in San Jose, California • Design & engineering centers in San Jose, Boulder (CO), Beverly (MA), and China • Listed on the NASDAQ (SYMM) • Financially stable, with solid balance sheet • Large scale deployments in over 100 countries • Broad and deep team of industry experts

3. What Does Symmetricom Do? Symmetricomgenerates, distributes, and applies precise time

4. Our Heritage A Rich Heritage of Time and Frequency Expertise Sync for TDM Networks Government / DefenseTiming Solutions Cesium and Rubidium technology Next generationSSU/Management Time and Frequency for Government and Commercial Applications Cesium forMetrology standards 1985 1993 1997 2002 2002 2005 2006 Scalable GPS technology Selected acquisitions shown

5. We Are the World Leader in “Time” Leading supplier to communications infrastructure • 60%+ worldwide market share in sync for commercial communications • The preferred next generation timing provider to major NEMs Leading supplier of time instruments • 70%+ of world time “contributions” • 60%+ share of NTP sync servers

6. Our Leading & Diverse Customers Communications Government, Enterprise & Power Markets

7. Symmetricom’s Global Coverage And 80+ Distributors worldwide / leading market share in >100 countries Munich Germany BeijingChina Santa Rosa (CA) Beverly (MA) Boulder (CO) New Delhi India San Jose (CA) Tuscaloosa (AL) Kuala LumpurMalaysia Regional Sales Office Sales and Support Center Design Center HQ / Design Center

8. Symmetricom’s Value To You • We understand what time can do, how to use it and how to derive value from it • We own and manufacture all our core technologies including Rubidium, Cesium and Hydrogen Masers • The most accurate commercially available clock sources in the world • Ability to apply our domain knowledge to solve complex real world problems • A foundation based on understanding of “time” • Knowledge of needs of sophisticated markets • Multiple product forms optimized for application specific needs • The most respected scientists and engineers in the field of time Hydrogen Maser 10-15 MHM 2010 AOG 110 Cesium 10-12 5071A CS 4000 TimeCesium GPS TimeSource XLi Timing Antenna 10-11 Rubidium SA.22c/3x MAC 8040C Quartz 10-10 1050 4145B

9. Our Two Business Units Communications Government Focused on solutions for communication services • IP-based next generation networks • Wireless technologies • Modernization of existing wireline infrastructure • Cable networks • Embedded solutions for OEM vendors Focused on solutions for critical timing applications • Aerospace and Military • IT Infrastructure • Power Grids • Science and Metrology • Chip Scale Atomic Clocks

10. Communications Business Unit (Markets) Wireline Telecommunication • Primary Reference Clocks, Grandmasters, and SSU/BITS shelves for SDH/SONET and next generation packet transport Wireless/WiMAX Networks • GPS radio clocks, IEEE 1588 Grandmaster and stand-alone slaves for wireless mobility Cable Networks • Last mile DOCSIS 3.0 / DTI timing sources for cable operators Embedded Systems • Atomic holdover clocks, custom timing modules and IEEE 1588 software based solutions for communication network elements

11. Government Business Unit (Markets) Aerospace and Defense • Space and Avionics • Command, Control, Communications, Computing and Intelligence (C4I) Metrology • World-wide standard for time (atomic clocks accurate within 1s over 60,000 years) • Time and frequency standards for scientific applications IT Infrastructure • Timing of LAN and WAN network elements • Specialized solutions for financial trading Smart Grid & Utilities • Centralized and substation master clocks for the Smart Grid

12. Symmetricom Services Standard Services • Warranty and product repairs • Technical Support • Engineering and Installation services • Software lifecycle management Advanced Services • Product and technology training • Central office and network audits • Synchronization planning and related consulting services • In region spares management for stringent SLA’s

13. Thank You