A method for transmitting a call parameter, such as the identifier of an A subscriber, to a first switching centre from a second switching centre serving the terminal of an A subscriber, when both switching centres are connected to an intelligent network service control point. One embodiment includes communicating with a communications network and receiving a request to create a trouble ticket. Reference lines are recognized and removed from the reference label scrubbed file to produce a scrubbed file. The light pulses overlap on the intermediate image carrier to effect correspondingly different charge levels. One or more of the following materials may be further added to the internal phase or continuous phase in the microencapsulation process: a fluorinated protective colloid, a second charge controlling agent or a second monomer or oligomer.