ACKNOWLEDGMENTS
The work of the Internet Engineering Task Force in publishing the Requests for Comment (RFCs) and Internet Standards helped make this book possible. Only the RFCs, IEEE and EIA standards, ITU Recommendations, and various implementation agreements fully describe the procedures, conditions, exceptions, and options for VoIP and UC protocols. After 10 years as a member of a Technical Committee for the Frame Relay Forum, I have a deep appreciation for the work involved.
Portions of standards appear here where their examples or statements say it best.
The archive of messages from the SIP Forum discussion list provided valuable insights into the practical matters faced by implementers. Thanks to all who shared their knowledge there.
Special thanks and appreciation to the many firms which provided briefings and answered my often detailed questions about VoIP and UC. In random order:
- Smoothstone
- Mitel Networks
- Encore Networks
- Avaya
- Siemens Enterprise Networks
- Cisco Systems
- Juniper Networks
- Broadvox
- OpenText
- Sprint
- Alcatel-Lucent
- Dialogic
- NEC
- Tone Software
- Secure Logix
- Ingate Systems
- Apparent Networks
- ERF Wireless
- AudioCodes
and all the companies mentioned in the chapter examples.
W. A. F.
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