Communications equipment giant Siemens has today unveiled a new guide to session initiation protocol (SIP), a hot new technology that can enable users to be contacted whether at home, in the office, ...

SIP vs VoIP: what's the difference? If you’re setting up a new VoIP business phone system, this question will sound familiar. You've likely run into the acronyms SIP, or Session Initiation Protocol ...

Avaya is the latest maker of Internet phone equipment that believes it can succeed where Yahoo and Microsoft have struggled: selling instant messaging that's good enough for the business world. The ...

When it comes to building interoperable unified communications architectures, “SIP is it” as far as standards go. Session Initiation Protocol (SIP) provides the “glue” that enables users to quickly ...

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 ...

In an era of technological advancement, effective communication lies at the heart of personal and business interactions. Voice Session Initiation Protocol (SIP) applications have emerged as a ...

Session Initiation Protocol Recording, or SIPREC for short, defines the architecture, associated call flows, and metadata that can be used for call recording. "This call may be recorded for quality ...