Public Switched Telephone Network Lecture 

I enjoyed this video more then I probably should. Students were asking all the right questions.

I've worked in telecom for over five years, this lecture is great. Thank you!

I enjoyed the lecture...Was hoping the Student that did the video could do some more

Thank you! Great lesson.

great lecture a shame I can't see the board

not visible what on Blackboard..

Not visible wt on the board

Why did AT&T hinder my request for an old line? I want to go over the FCC regulated phone line copper. Went to FCC web page more ????s. Is it too late?