Session Initiation Protocol (SIP), with its promise of serving as a single global signaling standard, has mushroomed in importance for networking in the past year. But it may be years from adoption ...

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 ...

Session Initiation Protocol (SIP) will allow true interoperability, eventually enabling every IP-based device and application to communicate seamlessly with one another. This guide discusses some of ...

Update: We're in the last throes of winter break 2019, which means most Ars' home office phones can stay dormant for a few more days. As such, we've been resurfacing a few classics from the ...

Session Initiation Protocol (SIP) is a control (signaling) protocol developed by the Internet Engineering Task Force (IETF) to manage interactive multimedia IP sessions including IP telephony, ...

This article originally appeared in the July 2013 issue of SD&I magazine. The “network-everywhere” methodology has infiltrated our lives and most of us are attempting to negotiate a network connection ...

It’s no secret that the architecture of office life is changing. The writing was on the wall, but the pandemic accelerated the evolution by showing us just how much of our work could be done remotely.

Having implemented and customized Asterisk-based VoIP solutions in the past, I was already aware of potential security issues around Voice over IP, especially using SIP. So it was with great curiosity ...

Last time I gave a high level overview of SIP and also took a look at SIP network element types. This time, I’ll be looking at SIP message and method types, and describing how SIP network elements ...

Deployment of session initiation protocol (SIP) is way up. Companies have increased deployment by 58% from 20008 to 2009, growing from 12% to 19%. Why? Primarily, cost savings: SIP trunks are much ...