All industrial societies are ageing. This has profound socio-economic and health sector implications. Innovative services based on Information Society Technologies (IST), like telehomecare are regarded as promising avenues to follow both to allow (national) health systems to cope with these challenges and to improve the quality of life of chronically ill and frail older citizens. The aim of the TEN-HMS project is to convincingly prove that telemonitoring of congestive heart failure (CHF) patients at home can improve medical outcome for these patients as well as their quality of life and the efficiency of healthcare delivery processes. But this will not (yet) be enough for the sustained success of such a service. Unless it takes into account the interests of the various players in the health care arena and a long-term Business Case can be proven, it will be very difficult to integrate such services into routine health care delivery processes. Before developing concrete delivery models for such a telemonitoring service, the "players" directly involved in such a service need to be identified--customers/patients, health services providers, IT services suppliers, and public/private insurance funds as payers--and their assessment perspectives considered. Then four concrete telemonitoring delivery models and their probability of success are discussed. Our analysis suggests that telemonitoring will presently only be successful if the service delivery model applied reflects national health system idiosyncrasies, takes into account established organisational boundaries and adapts to patient quality of life and health professional preferences. In the longer term, the new paradigm of seamless, patient-centred care will, however, require new, more efficient service delivery models integrating all aspects of the health services value chain.