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 ...

An organization that provides voice over IP (VoIP) service and enables calling from SIP phones to plain-old-telephone (POTS) lines and vice versa. SIP is the universal protocol used for Internet ...

The most reliable internet protocol (IP) desk phone is Polycom VVX because its hardware is crafted to an extremely high standard, and its user base appears to be consistently satisfied with its ...

GTT provides global telephone numbers and termination, and its services are interoperable with leading Cloud Phone vendors, ...

While setting up a SIP phone at home, I noticed something surprising - most SIP providers don't seem to offer any kind of encryption on the connection; both voice data and login data is done in clear ...

GTT Communications Inc., a leading networking and security as a service provider for multinational organizations, today ...

As The SIP School's sixth-annual SIP survey shows, many of the same problems from the same sources persist year after year. You would think by now that SIP trunking ...

We've been beta testing a promising new Web-based app for the iPhone, dubbed RingFree (go to https://rf.com on your iPhone to try it) that offers the ability to make calls through a variety of VoIP ...