Acknowledgments

From Kyzer Davis: A big hearty thank you to the rest of the author team for contributing to this publication and sharing their in-depth knowledge surrounding the various components, products, and protocols that make up the Cisco Unified collaboration product portfolio.

A smaller personal thank you to Joseph House, Mohammad Manna, Dillon Brown, Irina Hristova, Daniel Alejandro Alvarado Vega, Tim Thurber, Joshua Raja, Julio Cascante, Matt Gross, Scott Kiewert, Donald Hohenstein, Matt Taber, Hazel Pringle, Luis Gonzalez Galindo, Josh Meadows, Kyle West, Chris Enterline, Jared Compiano, Christopher Hsu, and Lyle Gardner for reviewing the chapters of this book at various stages during publication and providing valuable feedback on topic comprehension, structure, and flow.

From Patrick Kinane: Thank you to all the other authors, but especially Kyzer. I know Kyzer put a significant amount of time into this book on chapters he authored as well as the others. A big thank you to our technical editors, the people who read the chapters to provide feedback, and Cisco Press.

Thank you to the TLs, PEs, DSEs, and managers within the collaboration TAC community for always being excited about the projects TAC engineers are taking on. Thank you for encouraging us along the way and for your continued guidance.

From Gonzalo Salgueiro: Thanks to all my co-authors for their dedication and passion for making this book a reality. Special thanks to Kyzer Davis for inviting me to contribute to this incredibly worthwhile endeavor. This is the second book we've worked on together, and seeing your growth as an engineer and a leader makes me proud.

Thanks to my management and leadership teams for their unwavering encouragement, belief, and support throughout this project. A nostalgic note of thanks to Marty Martinez, Marc Holloman, and Tom Berghoff for their friendship, their guidance, and the indelible impressions of leadership they imparted.

Thanks to all the technical editors and reviewers who have helped improve this manuscript. Emphatic thanks to Esteban Valverde and Michael Mendoza for the careful and thorough review of all the chapters to ensure that the content is technically accurate, useful, and easily consumable. This book is better because of Kaustubh Inamdar and his exceptional work on our recently published SBC book. I am immensely grateful to Kaustubh for his technical contributions and leadership.

A hearty thanks to all the customers, developers, engineers, and technical writers with whom I have collaborated and co-innovated with during my many years at Cisco. Your generosity and willingness to share have made me a better engineer and have made projects like this book so rewarding.

Finally, thank you to everyone at Cisco Press for all the support with everything that happens after the technical words hit the page. We are grateful for all your efforts in making us look good! Special thanks to our development editor, Ellie Bru, who is a shining example of patience, professionalism, and excellence. This our fourth book together, and I'm looking forward to many more.