Host media processing (HMP) involves using general-purpose computing platforms instead of specialized hardware to create telephony applications. This offers lower costs through reduced hardware requirements, more flexibility in application deployment, and increased reliability by distributing processing across multiple servers. HMP provides voice processing and media services through software running on standard servers.

1. Developing Applications with Host Media Processing David Asher

2. Host Media Processing: What We’re Talking About Using a general-purpose computing platform To create a telephony application

4. HMP Reliability Economics 1 DSP platform with 480 ports 4 HMP platforms with 480 ports 1 Failure = 480 ports 1 Failure = 120 ports

9. Inside the HMP Media Server: Protocol Stacks Host Ethernet Ports Host IP Protocol Stack (QoS, Firewall) UDP / SCTP TCP RTP Host Media Processing HTTP Scripting Engines Media Control Protocols SIP MRCP Speech Automation Application Interface Media Services

10. HMP Stack Example Configuration for IVR IP (QoS) UDP IP (Firewall) UDP RTP Egress Ingress RTP Packet Scheduler Jitter Buffer Auto Gain Control Voice Decoder Voice Activity Det. Tone Detector RTP Stream Switching Media Processing Record Play Application Interface Packet Processing Voice Activity Det. Tone Generator Voice Encoder Gain Control Operating System API / IVR

12. Quality of Service – What? time Jitter Increase or Packet Loss Events Available Bandwidth Voice Class Data Class

13. Voice Coder Performance 20 ms 30 ms 10 ms 1.0 ms 0.75 ms Delay Time 4.2 4.0 4.2 4.2 4.4 Mean Opinion Score (1-5) 6.3 kbps G.723.1 Transmission Bandwidth Coder 15 kbps iLBC 8 kbps G.729a 16-32 kpbs G.726 64 kbps G.711

14. Voice Coder Resiliency

16. Types of Attack or Misuse Source: IDC, 2003 CSI/FBI Computer Crime and Security Survey

19. HMP Density Roadmap Montecito (4-Way) Tanglewood (16-Way) Dual 2.4 GHz Dual 64-Bit Based on Intel CPU Roadmap