The MIB module which provides a ADSL Line Coding Textual Convention to be used by ADSL Lines. A counter associated with interface performance measurements during the most previous 1-day (24 hour) measurement interval. The value of this counter is equal to the value of the current day counter at the end of its most recent interval. In the case where the agent has no valid data available for this interval the corresponding object instance is not available and upon a retrieval request a corresponding error message shall be returned to indicate that this instance does not exist (for example, a noSuchName error for SNMPv1 and a noSuchInstance for SNMPv2 GET operation). This data type is used as the syntax for the ADSL Line Code. 1 -- none of the following 2 -- Discrete MultiTone 3 -- Carrierless Amplitude & Phase modulation 4 -- Quadrature Amplitude Modulation A counter associated with interface performance measurements in a current 1-day (24 hour) measurement interval. The value of this counter starts at zero at the beginning of an interval and is increased when associated events occur, until the end of the 1-day interval. At that time the value of the counter is stored in the previous 1-day history interval, if available, and the current interval counter is restarted at zero. In the case where the agent has no valid data available for this interval the corresponding object instance is not available and upon a retrieval request a corresponding error message shall be returned to indicate that this instance does not exist (for example, a noSuchName error for SNMPv1 and a noSuchInstance for SNMPv2 GET operation). The number of seconds that have elapsed since the beginning of the current measurement period. If, for some reason, such as an adjustment in the system's time-of-day clock, the current interval exceeds the maximum value, the agent will return the maximum value.