1. Best of Breed Telephony with mixed OST and proprietary code Presented by: David Mandelstam, CEO/President, Sangoma Technologies

2. Open Source vs. Licensed software Licensed software Open Source Produced to meet a business requirement Written to meet a user’s specific need Feature set defined by standards or business case Features added as required by the users Customers expect all published features to work! Standards define the features Implementation is pragmatic: Features are added as they are found useful Good projects are exhaustively tested before release, with quick fixes for any published features that do not work Most testing is in the field: Popular features are well tested, other features are less well tested

4. Conclusion: Open Source may not be the best solution for compliance tested code.

5. Sangoma Open Source/Proprietary mixed implementation Closed source Proprietary code Open Source code

7. Questions?

8. Sangoma AFT Family of Cards Base PCI or PCI Express card Optional DSP module for echo cancellation and transcoding Personality Card : Quad port analog module Personality Card : Octal port T1/E1 module Personality Card: Quad port T1/E1 module Personality Card: Dual port T1/E1 module

11. We are heavily standards-based There is a difference between an implementation that “works” and one that is certified!