For more detailed information, press the Help Button. For a running record of the results calculated, press the Results button. Both these functions open new browser windows on your desktop. Blocking is the failure of calls due to an insufficient number of lines being available. E.g. 0.03 mean 3 calls blocked per 100 calls attempted.
Lines is the number of lines in a trunk group.
Click on the Unknown radio button representing the unknown variable. Enter the 2 known figures into their edit boxes. Press Calc and the third figure will be calculated and displayed in the remaining edit box. Enter 10 in the BHT edit box. Enter 0.02 in the Blocking edit box.