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 ...

This is one in a series of articles from the ebook “The Real World of AoIP.” Radio World asked several manufacturers to identify the most important technical development or trend in the use of AoIP.

BELLEVUE, Wash., Aug. 29 /PRNewswire/ -- 3G Americas, an organization representing the GSM family of technologies in the Americas, today provides a white paper entitled "Why SIP-I? A Switching Core ...

SIP session requests leverage the “session description protocol (SDP)” to define session characteristics such as media type, codec, and so on. While the IETF and SIPforum have standardized many of the ...

Motorola, Inc. (NYSE: MOT) has expanded its family of voice-enabled cable modems with the introduction of the SBV5100 series. The new models, based on the Session Initiation Protocol (SIP), one of the ...

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 ...