RAS

Registration, Admission, and Status

Registration, admission, and status (RAS) is a component of a network protocol that involves the addition of (or refusal to add) new authorized users, the admission of (or refusal to admit) authorized users based on available bandwidth, and the tracking of the status of all users. Formally, RAS is part of the H.225 protocol for H.323 communications networks, designed to support multimedia bandwidths. RAS is an important signalling component in networks using voice over IP (VoIP).