Learning Guide: How does VoIP work?
SearchCRM.com
By now, you probably have a general idea of what VoIP is, but do you understand how it works? Do you know how many bits are in a conventional PCM voice sample or what "look-ahead" used for? Do you know which two modes a caller can use to set up a call with SIP? If you don't know the answers to these questions, you will after reading SearchVoIP.com's technical guide to VoIP. Learn how call signaling and gateways work and why VoIP calls are particularly susceptible to delay and echo. Uncover the functional elements of SIP, H.323 and MGCP and why softswitches are not really switches at all.
After you've read through guide, test how much you learned in the Do you really know VoIP? quiz. Let us know how many questions you got right and if there is something you'd like to learn more about. In the spirit of education, we'll enter your name in a drawing for a $50 gift certificate to Amazon.com. Contest ends July 31, 2006, but don't let that stop you from testing your VoIP acumen.
CONTENTS
Section 1: How is transmitting voice different from sending data?
