xdsl2SCStatusSegmentQln

VDSL2-LINE-MIB · .1.3.6.1.2.1.10.251.1.2.5.1.5

Object

column dBm/Hz OctetString

An array of up to 512 real Quiet Line Noise values in dBm/Hz
for the respective transmission direction.  It is designed for up
to 512 (downstream) subcarrier groups and can be retrieved in a
single segment.
The number of utilized values in the downstream direction depends
              
on NSds; in the upstream direction, it depends on NSus.  This
value is referred to here as NS.
Each array entry represents the QLN(f = i*Df) value for a
particular subcarrier index i, (0 <= i <= NS).
The QLN(f) is represented as ( -23-n(i)/2), with n(i) in the range
0 to 254.  A special value n(i)=255 indicates that no measurement
could be done for the subcarrier group because it is out of the
passband or that the noise PSD is out of range to be represented.
This parameter is applicable in loop diagnostic procedure and
initialization.  Each value in this array is 8 bits wide.

Context

MIB: VDSL2-LINE-MIB
OID: .1.3.6.1.2.1.10.251.1.2.5.1.5
Type: column
Access: readonly
Status: current
Units: dBm/Hz
Parent: xdsl2SCStatusSegmentEntry
Table: xdsl2SCStatusSegmentTable
Siblings: 7

Syntax

dBm/Hz OctetString

Values & Constraints

Object Constraints

range: 0-512

Related Objects

Sibling Objects

Object	Type	Syntax	OID
xdsl2SCStatusSegment The segment of the subcarriers status information provided by this row. Several status parameters in this table are retrieved in segments. The first segment of the status informat…	column	Unsigned32	`.1.3.6.1.2.1.10.251.1.2.5.1.1`
xdsl2SCStatusSegmentLinReal An array of up to 512 complex H(f) linear representation values in linear scale for the respective transmission direction. It is designed to support up to 512 (downstream) subcarr…	column	OctetString	`.1.3.6.1.2.1.10.251.1.2.5.1.2`
xdsl2SCStatusSegmentLinImg An array of up to 512 complex H(f) linear representation values in linear scale for the respective transmission direction. It is designed to support up to 512 (downstream) subcarr…	column	OctetString	`.1.3.6.1.2.1.10.251.1.2.5.1.3`
xdsl2SCStatusSegmentLog An array of up to 512 real H(f) logarithmic representation values in dB for the respective transmission direction. It is designed to support up to 512 (downstream) subcarrier gro…	column	dB OctetString	`.1.3.6.1.2.1.10.251.1.2.5.1.4`
xdsl2SCStatusSegmentSnr The SNR Margin per subcarrier group, expressing the ratio between the received signal power and received noise power per subscriber group. It is an array of 512 octets, designed …	column	0.5 dB OctetString	`.1.3.6.1.2.1.10.251.1.2.5.1.6`
xdsl2SCStatusSegmentBitsAlloc The bits allocation per subcarrier. An array of 256 octets (512 nibbles) designed for supporting up to 512 (downstream) subcarriers. When more than 512 subcarrier…	column	bits VDSL2-LINE-TC-MIBXdsl2BitsAlloc	`.1.3.6.1.2.1.10.251.1.2.5.1.7`
xdsl2SCStatusSegmentGainAlloc The gain allocation per subcarrier. An array of 512 16-bit values, designed for supporting up to 512 (downstream) subcarriers. When more then 512 subcarriers are supported, the …	column	OctetString	`.1.3.6.1.2.1.10.251.1.2.5.1.8`