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 ...

As carriers increasingly incentivize their customers to migrate away from copper TDM-based services through significant price increases or abrupt sunset notices, we've seen client activity increase as ...

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 ...

We didn’t just take a sip. We took a good long drink of SIP technology in this round of iLabs testing. We gathered more than 50 devices from five SIP server vendors and 13 SIP endpoint vendors to ...

Today we’ll conclude (for the time being) our discussion on how best to transport control information for voice over IP. We asked some of the manufacturers of VoIP gear to talk about their support for ...