All MIBs › HUAWEI-VOP-MIB › hwVOPVirtualNoiseConfProfTxRefVnDs
hwVOPVirtualNoiseConfProfTxRefVnDs
Module: HUAWEI-VOP-MIB
OID (symbolic): HUAWEI-VOP-MIB::hwVOPVirtualNoiseConfProfTxRefVnDs
OID (numeric): 1.3.6.1.4.1.2011.6.144.1.1.18.1.4
Node type: OBJECT-TYPE
Type: Xdsl2LineTxRefVnDs
Access: read-create
Description: This configuration parameter defines the downstream transmitter referred virtual noise. The TXREFVNds shall be specified through a set of breakpoints. Each breakpoint shall consist of a subcarrier index t, with a subcarrier spacing of 4.3125 kHz, and a noise PSD level (expressed in dBm/Hz) at that subcarrier. The set of breakpoints can then be represented as: [(t1,PSD1), (t2, PSD2), ... , (tN, PSDN)]. 32 groups can be configured at most, and 3 bytes for each group. The first two bytes represent tone index, the 3th byte represents the configured PSD value. The relation between configured PSD value and real PSD value is: REAL PSD = (CONFIGURED PSD + 80) * (-0.5dBm/Hz).
What is hwVOPVirtualNoiseConfProfTxRefVnDs?
Downstream transmitter-referred virtual noise (TXREFVNds), specified as up to 32 breakpoints of (subcarrier index at 4.3125 kHz spacing, noise PSD in dBm/Hz), 3 bytes per breakpoint, where the real PSD equals (configured value + 80) * -0.5 dBm/Hz (G.997.1 7.3.1.7.3); this lets an operator pre-load an assumed future-crosstalk noise floor so the line trains and holds margin against noise that isn't present yet but is expected as more lines get added to the binder -- used only when hwVOPSNRMarginConfProfSnrModeDs enables virtual noise.
OID Breakdown
Upper-level ancestors (8 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.2011 | huawei | EXPERTV2-MIB |
| 1.3.6.1.4.1.2011.6 | huaweiUtility | HUAWEI-3COM-OID-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.2011.6.144 | hwVOPGlobalModule | HUAWEI-VOP-MIB |
| 1.3.6.1.4.1.2011.6.144.1 | hwVOPObjects | HUAWEI-VOP-MIB |
| 1.3.6.1.4.1.2011.6.144.1.1 | hwVOPProfiles | HUAWEI-VOP-MIB |
| 1.3.6.1.4.1.2011.6.144.1.1.18 | hwVOPVirtualNoiseConfProfTable | HUAWEI-VOP-MIB |
| 1.3.6.1.4.1.2011.6.144.1.1.18.1 | hwVOPVirtualNoiseConfProfEntry | HUAWEI-VOP-MIB |
| 1.3.6.1.4.1.2011.6.144.1.1.18.1.4 | hwVOPVirtualNoiseConfProfTxRefVnDs | HUAWEI-VOP-MIB |