Erlang-B.xls

Erlang-B

ERLANG-B BLOCKING FACTOR (GRADE OF SERVICE) CALCULATOR Offered traffic (erlangs)

E=

322.0

Number of trunks

N=

346

 Blocking Factor

B=

1.0%

Target Blocking Factor value B>=

1.0%

No. of Trunks to achieve goal =

346

 enter this  and this

Trunk utilization with N = 346 is

92.2%

J  and this

Instructions 1. Enter values only in the three yellow cells. 2. The value of N must be an integer.

Trunk utilization with N = 346 is

92.1%

Page 1

3. This calculator does not support values of E or N greater than 600. 4. The Target Blocking Factor value must be >0% and <100%.