[06] IS THERE A TIME LIMIT? HOW MANY HOURS DO I GET A MONTH?

     Analogue (56kbps or lower) MODEM connections are metered and
     can be used to an average of 15 hours a day per month.  If you
     regularly exceed 15 hours a day, you may be 'banned' by the
     tier 1 networks as you will be in violation of their terms of
     service.

     ISDN (64kbps-128kbps) NT1/TA connnections are metered up to 300
     hours per month.  Once you reach the 300 hour limit (roughly 
     10+ hours of service a day!) your connection will drop and you
     will be unable to authenticate until the 1st of the next month.

     Since ISDN connections can be established so much faster than
     analogue connections, its recommended that you set your NT1/TA
     in 'dial on network demand' mode to avoid using up your hours.

     You can use the 'dialstats' command to view your current usage.
     Usage numbers are reset on the first of every month.  Only users
     who have used a total of 50 hours in a single month are listed.