Hi All

I would like to write some type of billing program  that will collect the charges for each account monthly

 

When someone calls into the  (freeswitch) conference by dialing  toll free number or local number and enters PIN number

the  program will recognize that and start collecting number of minutes and number of  persons dialed in

and calculate  the  amount of  dollars.

 

Lets say conference is  10cent/per minute /per person for a tool free number

Each time people  dial into conference it will calculate total amount by person and by minutes, and generate monthly billing.

 

The PIN numbers may be different  for conferences that belong to same account.

 

How would I do such thing? Where do I start from?

Is there any sample programs like it somewhere out there

Which language would be best to it with 

 

I would pay for any professional services

 

Thanks in advance

deniro--