Methods and apparatus for billing communications services through the use of AIN functionality are described. Billing information is communicated to a service control point by placing one or two calls to a service subscriber to be billed for a service. The calls encounter a trigger set at a switch. In...http://www.google.fr/patents/US7123702?utm_source=gb-gplus-shareBrevet US7123702 - Methods and apparatus for billing conference calls
Methods and apparatus for billing conference calls