A Comparison of PSTN and IP Traffic From 1997 to 2015

A Comparison of PSTN and IP Traffic From 1997 to 2015.  Slides start on page #4.

[slideshare id=8515037&doc=acomparisonofpstnandiptrafficfrom1997to2015-110705135902-phpapp02&type=d]

Related

I often come across ideas/companies I like and while I’d

Too often we approach to-do lists as simply tasks that