Before switching to 56K modem we should take into account that:
-
only the best phone lines (with the lowest noise level) can handle 56-Kbps transmission. According to analysts, only 50% of US connections are clean enough
-
Some ISPs need to upgrade their connections to carrier phone networks
-
If lines are not pure digital and additional conversions take place, 56 K cannot be obtained.
-
There is also legal limit on speed: an FCC regulation dating back 20 years does not allow for higher modem transmission than 53.3 Kbps
|
