The PSTN is the public switched telephone network which is the legacy telephone network that is being transitioned to an all IP network infrastructure owned and operated by entities such as AT&T, Verizon, and other major telecom providers. The...

Like many people in the security industry today, you may not be making the long, expensive trip to Las Vegas this week. No worries though, Chesapeake and Midlantic Marketing are offering several local learning opportunities coming up over the next...

Tuesday, April 15 9am near Philadelphia, PA

This free class includes basics of video surveillance system design with discussions about various  ethernet,  copper, and fiber optic transmission methods