For the bhca , look the
capacity planning/Call Volume/ Audio report for 1 working day ,
take the interval of working hours (where there is the max traffic) and do the hour call attempt average .
you can repeat this for several days .
For the total calls by month , use :
select count(callID) from calls where ConnectTime > "2016-10-01 00:00:00" and ConnectTime < "2016-10-31 23:59:59";
The number of endpoints is given by :
select count(name) from endpoints;