On 2/22/2010 11:20 PM, Dave CROCKER wrote: > > > On 2/22/2010 8:42 PM, Larry Sheldon wrote: >> When Somebody calls one of my "portable" telephone numbers, they don't >> get a message telling them they have to call some other number. The get >> call progress tones. > > > You are confusing what is presented to the end-user with what might be going > on > within the infrastructure service. > > Call progress tones are the former and their primary goal is to keep the user > happy, providing very constrained information. Especially for mobile phones, > there is often all sorts of forwarding signallying going on while you hear to > tones.
I understand that--and had not considered that the global inventory of MTAs could be swapped out with stuff that could handle the redirection mechanically. I had left the telephone business by the time SS7 came along--how was that introduced? (I have assumed that it was as the #2, #4, and #5 machines and their equivalents were swapped out for ESS machines for a lot of additional reasons.) > In general, a core problem with the Knesset law is that it presumes something > that is viable for the phone infrastructure is equally - or at least > tolerably - > viable in the email infrastructure. Unfortunately, the details of the two > are > massively different in terms of architecture, service model, cost structures > and > operational skills. No kidding--something like making airlines do something railroads can do. -- "Government big enough to supply everything you need is big enough to take everything you have." Remember: The Ark was built by amateurs, the Titanic by professionals. Requiescas in pace o email Ex turpi causa non oritur actio Eppure si rinfresca ICBM Targeting Information: http://tinyurl.com/4sqczs http://tinyurl.com/7tp8ml
