(a) Telehealth services may be delivered in a variety of ways, including, but not limited to:(1) the store-and-forward model/electronic transmission which is an asynchronous electronic transmission of stored clinical data from one location to another;(2) the clinician interactive model which is a synchronous, real-time interaction between the provider and client that may occur via telecommunication links; and(3) the self-monitoring/testing model which occurs when the client receiving the services provides data to the provider without a facilitator present at the site of the client.(b) A provider shall not provide services by correspondence only, e.g., mail, email, or facsimile, although these may be used as adjuncts to telehealth.