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 ...
DO YOU KNOW the difference between IP broadcast and multicast? When is it appropriate to use multicasting for network video transmission? This month’s column is a quick tutorial on the basic methods ...
As SIP continues to seep into the mainstream, more attention is being paid to security issues, especially in public IP networks/the Internet. At VoiceCon Orlando in March, we're bringing back Cullen ...
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 ...
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