 The study will be comprised of two consecutive segments. At the first segment that will last during the first 4 months of the study, patients will be randomized to the CareLink treated group or non CareLink treated group. At this segment of the study the usage of the CareLink system will be accompanied by the diabetic team, through at least monthly contact via the internet initiated by the diabetic team. At the second segment of the study, during the following 4 months, both groups will use the CareLink system, home-use, without support initiated by the diabetic team. 