Abstract: Systems, methods, devices, and computer program products provide a portable electronic device configured to be communicatively coupled to a host device and configured to emulate one or more data storage medium drives, such as disk drives, of the host device. More particularly, a user interface of the portable electronic device may allow a user to instruct the portable electronic device to emulate a particular type of drive, such as a floppy drive, a CD drive, and a DVD drive, and to present data storage medium image files to the host device in the emulated drive. The systems, methods, devices, and computer products may also be configured to automatically present a second data storage medium image file to the host device in response to an eject request from the host device.

Abstract: The present invention relates to a method and network system for charging an account related to a terminal device (1) of a subscriber (A) to a first data network (10) for a network session rendered to the terminal device when roaming in a second data network (18). According to the method of the invention, upon registration of the terminal device to the second (visited) data network a network address of a first charging system (16) related to the home data network (10) of the terminal device (1) is transmitted from the home data network to the visited data network (18). When a network session is established for the terminal device (1) by the second data network, assessing of charge information about the network session will begin in the second data network in a real-time process. The saved network address of the charging system will be used for transmitting in real-time the assessed charge information from the second data network to the first charging system (16).

Abstract: The present invention relates to a method and network system for charging an account related to a terminal device (1) of a subscriber (A) to a first data network (10) for a network session rendered to the terminal device when roaming in a second data network (18). According to the method of the invention, upon registration of the terminal device to the second (visited) data network a network address of a first charging system (16) related to the home data network (10) of the terminal device (1) is transmitted from the home data network to the visited data network (18). When a network session is established for the terminal device (1) by the second data network, assessing of charge information about the network session will begin in the second data network in a real-time process. The saved network address of the charging system will be used for transmitting in real-time the assessed charge information from the second data network to the first charging system (16).