We've recently posted 2 new in-depth features in the right-hand column: One on SIP Trunking by Marc Robins, managing director of the SIP Forum; and one on the evolution and future of the PBX by Allan ...

Yes, you heard correctly. You can replace your existing PBX system today with Microsoft’s Office Communications Server 2007 R2 platform. The trick is in using SIP Trunking, not existing old school ...

As I explored in my last post, I expected that the eighth-annual SIP and Cloud survey from The SIP School would show a decrease in provider problems, but that was not the case. I also thought that ...

Just what is SIP trunking? Let’s take it one part at a time. SIP refers to Session Initiation Protocol, the standard developed in the 1990s by the Internet Engineering Task Force that is used to set ...

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I am setting up an IP phone system for an office with 20 people. Can anyone recommend a reliable SIP trunk provider? We have a Grandstream UCM6208 PBX. Most calls made will be international. I am ...