On Wed, Feb 17, 2010 at 12:50 AM, Joe Abley <jabley@hopcount.ca> wrote:
I am somewhat intrigued at this network you mention with which people have practical experience that has more nodes than the Internet does, though. That'd be quite a network.
what's the current estimate on PSTN endpoints? 2-3B globally? is that more/less than the IP/Internet world? I bet it's, at this time, fairly close to the same number. Potential references: <http://www.funtrivia.com/askft/Question25278.html> thinks the ITU estimated ~33% of 1.4b devices were mobile phones (in 2002) <http://en.wikipedia.org/wiki/List_of_countries_by_number_of_mobile_phones_in_use> wikipedia thinks a total mobile phone market is ~4.1b phones with ~60% global penetration. <http://en.wikipedia.org/wiki/List_of_countries_by_number_of_telephone_lines_in_use> number of PSTN lines globally ~= 1.3b So a total across the wikipedia links says ~5.5b phone devices. That seems significantly more than IP devices. I did not, obviously, factor in phones which are also IP devices (your iPhone type thingy) -Chris