3. Ian Colville Product Manager Aculab plc ian.colville@aculab.com +44 (0)1908 273 923 VoIP without DSPs: challenges and opportunities

4. Agenda  An epiphany moment  How’d ya do VoIP without DSPs?  Some of the benefits  The issues and challenges  Where can you use it?  A mini case study  Questions  Summary

5. My job for the next 20 minutes…  Keep you awake and engaged  Provide an educational and fun experience  Maintain non-commercialism  Pass on some thought provoking tips centred around the challenges and opportunities arising from VoIP without DSPs

6. There’s nothing like a good idea  Sometime, somewhere…  Someone had a thought along the lines of, “In an all-IP environment I don’t need a T1, so is there still a need for a DSP board?”  At this epiphany moment, he thought unto himself, “There is another way!”

7. Or as Nostradamus put it…  In the bright millennium in the house of greatest power  With a blinding flash that is not obscure  He will realise no need for T1s  And can resources run on any PC tower

8. What do we mean; VoIP without DSPs?  DSPs run firmware that performs media processing  Functions are essential for telephony systems  Software-based media processing resource functions are an alternative  Software that runs on a host PC’s CPU  Alongside the application  Instead of firmware running on dedicated DSP resource boards

9. What do these resources do?

10. How to implement VoIP without DSPs Let’s get to the heart of the matter

11. Benefits of this approach  Terrific idea for trial or development systems  Speeds time to market  Cost-effective for small-scale VoIP e.g., SMEs  Reduces total cost of ownership  Wide choice of platforms  ‘No-brainer’ network connectivity  Can be offered as a package with SIP or H.323

12. Issues and challenges  Toasting the host

13. Issues and challenges  It’s not the speed  The application  Codec selection  Delay/latency

14. Issues and challenges  Some functions are better suited to DSPs  Echo cancellation  Conferencing

15. Issues and challenges  Licensing  Upgrades/scaling up  Support costs  Total cost of ownership

16. Issues and challenges  Functionality  Channel count  Small-scale systems  The nature of the application  Telco-grade

17. Where can you use DSP-less VoIP?  Small-scale IVR, voicemail  IP PBX for SMEs  High channel broadcast/announcements  Try it out on telco-grade servers or Blades

18. Mini case study  Here’s an example of VoIP without DSPs  Cisco CallManager VoIP telephone system replaced old TDM system  Educational complex with its own hotel  4 separate campuses; >500 extensions  Voicemail features didn’t meet customer’s needs

19. Mini case study  DSP-less VoIP for enhanced voicemail  Standard H.323 interface  Unlimited amount of voicemail boxes and messages  Several ’add-on’ features compared to ’standard’ voicemails e.g., mobile phone voicemail box, automated attendant, information boxes, email forwarding (WAV file), browser-based user interface, IVR, etc.

20. The opportunities realised  No extra hardware costs for interface or resources  Easy integration process  Hybrid solutions possible  Various PBXs and VoIP solutions served by same voicemail/ IVR  Implementation costs are low  Easy to implement, tailor, upgrade and update  Delivery costs are modest

21. Any questions? Haben Sie irgendwelche Fragen? Have you any questions? Vous a n'importe quelles questions ? Heb u enig vragen? Le tiene cualquiera pregunta? L'ha qualunque domande? Имейте Вас любые вопросы? Czy maja Panstwo jakies pytania? Have you any questions?

22. In summary  Speeds time to market  Cost-effective for small-scale VoIP e.g., SMEs  Reduces total cost of ownership  No extra hardware costs for interface or resources  Easy to implement, tailor, upgrade and update  Wide choice of platforms  Blade Server is an option

23. Or, as Nostradamus might’ve said…  In the halcyon days of adventurous voice over IP  Great systems will be constructed  IVR and VM 1 will demand resources  And they shall be found without a DSP 1: Voicemail

24. You can call me Ian And I’ll say you’ve been a great audience THANK YOU! See Aculab on stand 515 ian.colville@aculab.com +44 (0)1908 273 923