The CareLink monitor collects information from your device and transmits it over a standard phone line to a remote server. Your clinic then reviews the data on a secure website. When the situation warrants, they alert your doctor and he or she can follow up with you. It's a way to check in without scheduling a check-up. CareLink is Medtronic's version of remote monitoring products, however, most ICD manufacturers have their own version of remote monitoring for patients to use.