and Levenson, forthcoming, for a detailed description). More common are initiatives involving coordination and linkage with, for instance, integrated care initiatives enabling alignment of goals and joined-up working. It is essential to understand that movement between the different `levels' shown in Figure 2 can happen both ways, in terms of more fully integrating as well as potentially fragmenting services. As Leutz points out: `one man's integration is another's fragmentation' (Leutz, 1999). In other words, integration within one part of a health system may well facilitate movement along the continuum, but it can also result in fragmentation elsewhere. The intensity of integration that is sought must relate to the goals and context in which those concerned with integrated care are working, including those of patients.
automated service. This address identifies both the network on which the computer is located and the computer itself, so that one address can uniquely identify any computer. IPX, on the other hand, uses a separate address to identify the network on which a computer is located and uses the hardware address to identify a computer on the network. NetBEUI identifies computers using a NetBIOS name assigned to each system during its installation. Fragmenting - Network layer datagrams may have to pass through many different networks on the way to their destinations, and the data-link layer protocols that the datagrams encounter can have different properties and limitations. One of these limitations is the maximum packet size permitted by the protocol. For example, Token Ring frames can be as large as 4,500 bytes, but Ethernet frames are limited to 1,500 bytes. When a large datagram that originated on a Token Ring network is routed to an
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