A savvy client of mine who sells hosted VoIP services recently called me with a serious problem. Calls made to my client’s customers from some mobile devices supported by two wireless providers ...
Yesterday I was explaining NATs and SSH tunnels/VPNs and how having a system with a public IP can help two random hosts to communicate. Is there a good book (or MOOC course, I guess) that I can point ...
Many certifications touch on voice over IP (VoIP) topics tangentially, but numerous credentials now focus a fairly substantial portion of their coverage on this subject matter. In this certification ...
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