1. August 3-4, 2004 San Jose, CA www.voipdeveloper.com DSP vs. HMP Making the right decision August, 2004 Lior Weiss Director Of Product Marketing AudioCodes Inc. Lior.weiss@audiocodes.com www.audiocodes.com

2. August 3-4, 2004 San Jose, CA www.voipdeveloper.com Agenda Quick review of platform choices What the market is telling us Criteria to help make a choice Ideas on leveraging both platforms

3. August 3-4, 2004 San Jose, CA www.voipdeveloper.com Quick Review What is HMP? What is DSP? Both are Hardware platforms (Sparing, Maintenance, MTBF, etc.) One is Intel centered Chipset, the other is TI centered Chipset One is generic architecture, the other is specific designed architecture

4. August 3-4, 2004 San Jose, CA www.voipdeveloper.com What’s the difference? Whether to use the host processor or a set of dedicated DSP processors to perform media handling.

5. August 3-4, 2004 San Jose, CA www.voipdeveloper.com What are our customers telling us? Developers need both HMP and DSP solutions HMP is great for: –Low-density enterprise solutions –Will help adapt VoIP apps. to a lower density customer DSP is great for: –Medium and high-density solution –Keeps server count down –“Heavy Lifting” like call centers and carrier applications Customer want standards (like SIP)

6. August 3-4, 2004 San Jose, CA www.voipdeveloper.com Points of Comparison Consider the costs –CapEx – equipment and software up-front costs –OpEx – on-going maintenance fees Compare performance Compare reliability – MTBF Compare in your specific application case So let’s do some comparison…

7. August 3-4, 2004 San Jose, CA www.voipdeveloper.com Cost Comparison – CapEx

8. August 3-4, 2004 San Jose, CA www.voipdeveloper.com Cost Comparison – CapEx Low-densities - cost is about same Watch for expensive high-performance servers How many servers are needed Cost of operating system, virus and management software fees High-densities – DSP is less expensive One mid-priced server can support 480 ports Industrial PC platforms can handle 40+ spans Carrier grade: 1300 ports per 1U of rack space! And What about wattage?.. Can get be at the neighborhood of 1:50 ratio of Watt/Channel

9. August 3-4, 2004 San Jose, CA www.voipdeveloper.com Cost Comparisons – OpEx Consider: –Spares and operational cost of numerous servers –Software maintenance costs –Server Hardware upgrade costs (every three – four years) –Platform predictability: Service and Sparing nightmare

10. August 3-4, 2004 San Jose, CA www.voipdeveloper.com Performance comparisons “Last Mile Challenge” Voice processing: DTMF clamping and detection, echo cancellation, noise reduction, speech detection, etc. Cost per MIP Power consumption per Channel Latency, Jitter, RTOS, MOS grades MTBF and Reliability –What is the aggregate MTBF for 10 PC Platforms needed to provide 1,000 channels of conferencing?

11. August 3-4, 2004 San Jose, CA www.voipdeveloper.com What about Moore’s Law? Argument: Pentium platforms will follow Moore's Law (doubling density roughly every 18 months). Response: “Frankly, Moore's law isn't limited to Pentium processors, …” Up to 480 Ch. Launched 3Q/02 Up to 2000 Ch. Launched 1Q/04 1610 6310

12. August 3-4, 2004 San Jose, CA www.voipdeveloper.com Summary HMP has it’s place –low-density enterprise applications DSP has it’s place –Complex and CPU intensive operations –Medium and high-density enterprise and carrier applications By using standards like SIP, ensure you and your customer have options