DSP vs. HMP Making the right decision Lior Weiss Director Of Product Marketing AudioCodes Inc. Lior.firstname.lastname@example.org www.audiocodes.com August, 2004
Agenda • Quick review of platform choices • What the market is telling us • Criteria to help make a choice • Ideas on leveraging both platforms
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
What’s the difference? Whether to use the host processor or a set of dedicated DSP processors to perform media handling.
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)
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…
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
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
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?
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, …” 6310 Up to 2000 Ch. Launched 1Q/04 1610 Up to 480 Ch. Launched 3Q/02
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