
The Erlang B Calculator can be used
to work out how many lines you need for a trunk group if you know the Busy Hour Traffic
which the trunk group is offered. 

The Lines and IP Bandwidth Calculator
can be used to estimate the bandwidth required through an IP based network for a fixed
number of voice paths. 

Our Call Centre Calculator, which
can be used to estimate how many call centre agents you require for each hour of an eight
hour day, and how many trunks you need. 

The Call Minutes Calculator uses the
number of minutes of traffic a trunk group is offered in one day to work out the number of
required lines. 

The Erlangs and Bandwidth Calculator
can be used to estimate the bandwidth which must be provided through an IP based to
satisfactorily transport a given busy hour traffic level. 

The Extended Erlang B Calculator is similar to
the Erlang B Calculator but takes retries into account. It can be applied to trunk groups
from which no overflow facilities exist. 

The Erlang C Calculator can be used
to estimate how many agents are required in a call centre, if the quantity and length of
incoming calls are known. 

The Engset Calculator can be used
to work out how many lines you need for a trunk group if you know the Busy Hour Traffic
which the trunk group is offered. It should be used instead of the Erlang B
Calculator when the number of traffic sources is finite (less than ten times the number of
lines). 