ATIS 1000622.a.1998(S2018)

This supplement to American National Standard for Telecommunications – Message Waiting Indicator and Notification Supplementary Services and Associated Switching and Signaling Specifications, ATIS-1000622.1999(R2008), revises the standard to improve and expand the applicability of this standard, in particular, when interfacing to an NT2. Formerly known as T1.622a-1998(R2008).