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 ...

The iptel.org 180+ page SIP tutorial is outstanding. Another overview that is a bit more market-oriented and nearly as long. White paper on the SIP value proposition over telephony, SIP and the new ...

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 ...

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 ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Table 1. This table illustrates subnet masks. The number after the “/” in the CIDR notation ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. An Essential IP Tutorial for Technology Managers. Every website, URL, computer, or AV device on ...