Ars Technica

VoIP in-depth: An introduction to the SIP protocol, Part 2

In Part 1 of our SIP primer, I covered the SIP foundation layers starting from the message structure and ending with the SIP transactions. We saw how phone registrations and proxies could work using ...
Computer Weekly

What's in a VoIP packet -- An introduction to bandwidth for VoIP

Voice over IP (VoIP) is the descriptor for the technology used to carry digitised voice over an IP data network. VoIP requires two classes of protocols: a signaling protocol such as SIP, H.323 or MGCP ...
TechRepublic

Why Most Buyers Can Ignore the Question of SIP vs VoIP

Why Most Buyers Can Ignore the Question of SIP vs VoIP Your email has been sent Discover the differences between SIP vs VoIP and why those differences don’t really matter that much during the buying ...
EDN

Voice over IP (VoIP)–The basics

The term Voice over IP (VoIP) does not refer to a single service but encompasses an entire collection of services that can fill the phone service needs of many different residential and business ...
Ars Technica

VoIP in-depth: An introduction to the SIP protocol, Part 1

In our last VoIP installment, we looked at the main reasons why SIP has become a widely adopted protocol, but we left details of the protocol’s inner workings fairly vague. This article will drill ...