>As far as I remember, you have to start digging into 'Eigen numbers' or >something like that
Yes. It is called the Erlang-C formula. The phone industry started to use it 80 years ago. Erlang was the pioneer of traffic theory. Just Google around. Regards, Robert Hamilton ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
