How To Set Up Free SIP Calling On Any Device Your email has been sent Most people communicating on the internet are using SIP calling. Here’s how to make free SIP calls — and when you shouldn’t.

Session Initiation Protocol, or SIP, has been hailed as the key to the convergence kingdom, the global signaling standard that will enable all switches, gateways and phones — hard and soft — to talk ...

How do we break the almost infinite cycle of continuous interoperability testing? Last week we moved from a discussion about the technology and weakness of the SIP RFCs to what I feel is a far more ...