In any incoming call state, the application can invoke nccSetBilling to set the billing information for the incoming call. NCCEVN_BILLING_SET indicates that the billing information was successfully sent to the network. The value field contains the billing rate setting.
Billing is not supported by all protocols. NCC_CAP_SET_BILLING in the capabilitymask returned by nccQueryCapability indicates if the current protocol supports the ability to set the billing for a call.