Description: The MIB module defining objects for the management of a pair of VDSL modems at each end of the VDSL line. Each such line has an entry in an ifTable which may include multiple modem lines. An agent may reside at either end of the VDSL line however the MIB is designed to require no management communication between them beyond that inherent in the low-level VDSL line protocol. The agent may monitor and control this protocol for its needs.

VDSL lines may support optional Fast or Interleaved channels. If these are supported, additional entries corresponding to the supported channels must be created in the ifTable. Thus a VDSL line that supports both channels will have three entries in the ifTable, one for each physical, fast, and interleaved, whose ifType values are equal to vdsl(97), fast(125), and interleaved(124), respectively. The ifStackTable is used to represent the relationship between the entries.

Naming Conventions: Vtuc -- (VTUC) modem at near (Central) end of line Vtur -- (VTUR) modem at Remote end of line Vtu -- One of either Vtuc or Vtur Curr -- Current Prev -- Previous Atn -- Attenuation ES -- Errored Second. LCS -- Line Code Specific Lof -- Loss of Frame Lol -- Loss of Link Los -- Loss of Signal Lpr -- Loss of Power xxxs -- interval of Seconds in which xxx occurs (e.g., xxx=Lof, Los, Lpr) Max -- Maximum Mgn -- Margin Min -- Minimum Psd -- Power Spectral Density Snr -- Signal to Noise Ratio Tx -- Transmit Blks -- Blocks, a data unit, see vdslVtuXChanCrcBlockLength