Traffic estimation for different kinds o

Hi,

is there anyone who knows some estimated values of busy hour traffic generated by the following classes of subscribers?

– residential subscriber POTS
– residential subscriber
– business subscriber POTS
– business subscriber ISDN (BRI)
– multi-line business subscriber ISDN (PRI)

For instance, I heard once that a residential POTS subscriber produces 0.08 Erlang in the busy hour as a thumb rule.

Anyone, who can confirm this?

tnx
regards
Robert