We have a number of customers billing for telephony services. We'd need a look at your data, and need to know what you want to do with it. For instance, are they pre-rated at all, where we'd just be accumulating charges? Or do we need to sum up call times and rate them ourselves? What is your billing structure? And do we need to charge telephony taxes and tarriffs? If you'll contact Joey Olson in Platypus support, he can put you in touch with our professional service team to help you with integration.