1. HD Voice and Asterisk: Hearing the sirens song October 14, 2009

2. 2HD Voice | Oct. 14 th ‘09 The Sirens Song Paintings by John William Waterhouse: Ulysses and The Sirens,1891 Painting by John William Waterhouse: The Sirens, 1900

3. 3HD Voice | Oct. 14 th ‘09 3 What Is HD Voice? 80 300 3500 22000 Hz Narrow Band Telephones 300 – 3300 Hz 14000 Hz Range of Human Hearing Human Speech 80 – 14,000 Hz 7KHz Wideband Telephones 280 – 7000 Hz Presence Consonants POTS phones carry 1/4 of human speech Higher frequencies are critical for identifying the talker Consonants carry half of speech information Consonants occur largely above POTS range

4. 4HD Voice | Oct. 14 th ‘09 Initial Industry Barriers to HD Voice Adoption Few interoperable endpoints Limited call control platform support HD Voice offerings? No carrier peering support Codec confusion Minimal awareness

5. 5HD Voice | Oct. 14 th ‘09 Today’s HD Voice Endpoints

6. 6HD Voice | Oct. 14 th ‘09 Today’s HD Voice Call Control Platforms

7. 7HD Voice | Oct. 14 th ‘09 Today’s HD Voice Offerings Tier 1 service providers (wired and wireless) Tier 1 CPE providers Hundreds of Tier 2/Tier 3 vendors around the world

8. 8HD Voice | Oct. 14 th ‘09 Today’s Carrier Peering HD Connect Now  Jeff Pulver  14 member companies  Interoperability, global awareness, cohesive ecosystem  www.hdconnectnow.org Service provider peering organizations forming

9. 9HD Voice | Oct. 14 th ‘09 Today’s Codecs 6 kbps64 kbps Data Bit Rate 3 kHz 7 kHz 14 kHz 20/22 kHz Audio Fidelity AMR-NB G.729 G.711 G.722.2/ AMR-WB G.722.2/ AMR-WB G.722 G.722.1 G.722.1C G.719 Siren22 Today’s HD Codec of choice SILK

10. 10HD Voice | Oct. 14 th ‘09 Today’s Media Attention Social Media BlogsCommunity Sites Seminars “First time in history, a person’s voice really matters” Jeff Pulver’s Blog “The human voice itself is hi-fi but the old phone network always clipped off about two-thirds of your voice” Jeffery Rodman’s blog

11. 11HD Voice | Oct. 14 th ‘09 Conclusion Many of the barriers of HD Voice are falling quickly If you are not introducing your customers to HD Voice… your competition is

12. Thank you!