Introduction to SIP IP Telephony Systems - Technology Basics- Services- Economics- and Installation Description:

Introduction to SIP IP Telephony Systems : Technology Basics, Services, Economics, and Installation review:
1 stars (Little useful information) - This book tries to dumb-down SIP. It looks like it wants to be a training manual for a "Learning SIP" course, but doesn't provide any real technical detail. It is poorly written and a tedious read.



This is the first sentance:



"SIP is a standardized technology that allows for the sending of voice, data, and video between communication devices on public (e.g. Internet) or private (e.p. local area networks) data networks."



... and it doesn't get any better after that.



SIP Demystified by Gonazlo Camarillo is a much better read. It is engaging and well written, providing useful information for IT engineers, managers and technologists.