What's VoIP's Big Security Problem? SIP Session Initiation Protocol (SIP) is a must for voice over IP (VoIP) communication. But by itself, SIP is insecure and easily hacked. Here's what you need to ...

RFC 4474 implements Public Key Infrastructure (PKI). This provides an authenticated identity for the originator of a VoIP call. There is a security hole in the SIP protocol. According to John Nix, VP, ...

On either side of that somewhat soft SIP trunk demarc, security continues to be important, and it's still a matter of contention on who's willing to pay for what services. In case you don't know him, ...

Because of their robust reliability, security and flexibility, voice over Internet protocol solutions are being adapted by the military worldwide. Voice technologies evolve for tomorrow’s military ...