Session initiation protocol (SIP) trunking allows any organization to upgrade its offline PBX to an internet-powered business phone system. Business leaders are using this technology to harness VoIP’s ...

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 ...

However, unless you're using an entirely proprietary Voice-over-IP (VoIP) system, then SIP is part of your life. That's because SIP is the protocol that makes and completes telephone calls in most ...

Since we first tested softphones in 2002, they have improved to tap into wider broadband pipes, faster CPUs and more capable versions of Windows. They’re less expensive, too. CounterPath and ...