In one aspect, cabin interphone handsets and passenger announcement speakers in the cabin of a vehicle communicate over an internet protocol data network. The composition contains an organic peracid, preferably peracetic acid, or other antimicrobial agent, and a retention aid. An application program seeking to use a channel of a virtual interface must register the virtual address of host memory where data for communication is or will be stored and register the virtual address of a page of IO addresses. Ash and grit is removed from the fluffy carbon black slurry, which further improves the properties of the carbon-filled rubber by reducing defects in the rubber caused by the ash or grit. The requesting device of the invention may notably allow to pause and retrieve a movie being played from such a server.