Abstract: A device comprises a first binding unit which provides for a binding to a first tunnelling server using a first protocol, a second binding unit which provides for a binding to a second tunnelling server using a second protocol different from the first protocol, and an authorizing unit which causes the first or second binding unit to provide the binding.

Abstract: A method comprising transmitting a busy signal from a first node; receiving said busy signal at a second node; and transmitting data from said second node to said first node on a channel associated with said busy signal.

Abstract: Halosalicylic acid compounds of the present invention, having at least one halogen substituent on the aromatic ring, are employed to produce desquamation of skin, treat nail disorders or dandruff, remove calluses, control acne and excess sebum production, reduce skin pore size or control blackheads. Topical compositions containing the halosalicylic acid compound and a cosmetically acceptable vehicle are disclosed.