entity when the at least one processor 710 executes functional entities associated with the invention memory 730 comprises entities such as any of the functional entities 732 750 the functional entities within apparatus 700 illustrated in fig7 may be implemented in a variety of ways they may be implemented as processes executed under the native operating system of the network node the entities may be implemented as separate processes or threads or so that a number of different entities are implemented by means of one process or thread a process or a thread may be the instance of a program block comprising a number of routines that is for example procedures and functions the functional entities may be implemented as separate computer programs or as a single computer program comprising several routines or functions implementing the entities the program blocks are stored on at least one computer readable medium such as for example a memory circuit memory card magnetic or optic disk some functional entities may be implemented as program modules linked to another functional entity the functional entities in fig1 may also be stored in separate memories and executed by separate processors which communicate for example via a message bus or an internal network within the network node an example of such a message bus is the peripheral component interconnect pci bus the exemplary embodiments of the invention can be included within any suitable device for example including any suitable servers workstations pcs laptop computers pdas internet appliances handheld devices cellular telephones wireless devices other devices and the like capable of performing the processes of the exemplary embodiments and which can communicate via one.