Wholesale billing: A process that many companies use to pay their bills and invoices to multiple vendors.
Wholesale billing is easy in comparison of retail billing and allows a big level of threshold of tolerance where as retail billing always needs to be 100% accurate. Wholesale billing can never if 100% accurate because of various reasons like difference in prices configured in two operators systems or difference in number of calls rated because some of the calls may got missed at any network element.
Telecom billing: Telecom Billing is a process of collecting usage, aggregating it, applying required usage and rental charges and finally generating invoices for the customers.
Telecom billing process also includes receiving and recording payments from the customers.
