docsIfCmtsModPreambleLen
DOCS-IF-MIB ·
.1.3.6.1.2.1.10.127.1.3.5.1.5
Object
column
r/w
bits Integer32
The preamble length for this modulation profile in bits. Default value is the minimum needed by the implementation at the CMTS for the given modulation profile.
Context
- MIB
- DOCS-IF-MIB
- OID
.1.3.6.1.2.1.10.127.1.3.5.1.5- Type
- column
- Access
- readwrite
- Status
- current
- Units
- bits
- Parent
- docsIfCmtsModulationEntry
- Table
- docsIfCmtsModulationTable
- Siblings
- 21
Syntax
bits Integer32
Values & Constraints
Object Constraints
range: 0-1536
Related Objects
Sibling Objects
| Object | Type | Syntax | OID |
|---|---|---|---|
| docsIfCmtsModIndex An index into the Channel Modulation table representing
a group of Interval Usage Codes, all associated with the
same channel. | column | Integer32 | .1.3.6.1.2.1.10.127.1.3.5.1.1 |
| docsIfCmtsModMaxBurstSize The maximum number of mini-slots that can be transmitted
during this channel's burst time. Returns zero if the
burst length is bounded by the allocation MAP rather than
by this p… | column | mini-slots Integer32 | .1.3.6.1.2.1.10.127.1.3.5.1.10 |
| docsIfCmtsModGuardTimeSize The number of symbol-times that MUST follow the end of
this channel's burst. Default value is the minimum time
needed by the implementation for this modulation profile. | column | Symbol-times SNMPv2-SMIUnsigned32 | .1.3.6.1.2.1.10.127.1.3.5.1.11 |
| docsIfCmtsModLastCodewordShortened Indicates whether the last FEC codeword is truncated. | column | SNMPv2-TCTruthValue | .1.3.6.1.2.1.10.127.1.3.5.1.12 |
| docsIfCmtsModScrambler Indicates whether the scrambler is employed. | column | SNMPv2-TCTruthValue | .1.3.6.1.2.1.10.127.1.3.5.1.13 |
| docsIfCmtsModByteInterleaverDepth ATDMA Byte Interleaver Depth (Ir). This object returns 1
for non-ATDMA profiles. | column | SNMPv2-SMIUnsigned32 | .1.3.6.1.2.1.10.127.1.3.5.1.14 |
| docsIfCmtsModByteInterleaverBlockSize ATDMA Byte Interleaver Block size (Br). This object
returns zero for non-ATDMA profiles | column | SNMPv2-SMIUnsigned32 | .1.3.6.1.2.1.10.127.1.3.5.1.15 |
| docsIfCmtsModPreambleType Preamble type for DOCSIS 2.0 bursts. The value
'unknown(0)' represents a row entry consisting only of
DOCSIS 1.x bursts | column | Enumeration | .1.3.6.1.2.1.10.127.1.3.5.1.16 |
| docsIfCmtsModTcmErrorCorrectionOn Trellis Code Modulation (TCM) On/Off. This value returns
false for non-S-CDMA profiles. | column | SNMPv2-TCTruthValue | .1.3.6.1.2.1.10.127.1.3.5.1.17 |
| docsIfCmtsModScdmaInterleaverStepSize S-CDMA Interleaver step size. This value returns zero
for non-S-CDMA profiles. | column | Unsigned32 | .1.3.6.1.2.1.10.127.1.3.5.1.18 |
| docsIfCmtsModScdmaSpreaderEnable S-CDMA spreader. This value returns false for non-S-CDMA
profiles. Default value for IUC 3 and 4 is OFF; for
all other IUCs it is ON. | column | SNMPv2-TCTruthValue | .1.3.6.1.2.1.10.127.1.3.5.1.19 |
| docsIfCmtsModIntervalUsageCode An index into the Channel Modulation table that, when
grouped with other Interval Usage Codes, fully
instantiates all modulation sets for a given upstream
channel. | column | Enumeration | .1.3.6.1.2.1.10.127.1.3.5.1.2 |
| docsIfCmtsModScdmaSubframeCodes S-CDMA sub-frame size. This value returns zero
for non-S-CDMA profiles. | column | Unsigned32 | .1.3.6.1.2.1.10.127.1.3.5.1.20 |
| docsIfCmtsModChannelType Describes the modulation channel type for this modulation
entry.
All the active entries in a modulation profile (that is all
active entries that share a common docsIfCmtsModIndex)… | column | DocsisUpstreamType | .1.3.6.1.2.1.10.127.1.3.5.1.21 |
| docsIfCmtsModStorageType The storage type for this conceptual row.
Entries with this object set to permanent(4)
do not require write operations for read-write
objects. | column | SNMPv2-TCStorageType | .1.3.6.1.2.1.10.127.1.3.5.1.22 |
| docsIfCmtsModControl Controls and reflects the status of rows in this table.
There is no restriction on the changing of values in this
table while their associated rows are active, with the
exception … | column | SNMPv2-TCRowStatus | .1.3.6.1.2.1.10.127.1.3.5.1.3 |
| docsIfCmtsModType The modulation type used on this channel. Returns
other(1) if the modulation type is not
qpsk, qam16, qam8, qam32, qam64, or qam128.
Type qam128 is used for SCDMA channels only.
… | column | Enumeration | .1.3.6.1.2.1.10.127.1.3.5.1.4 |
| docsIfCmtsModDifferentialEncoding Specifies whether or not differential encoding is used
on this channel. | column | SNMPv2-TCTruthValue | .1.3.6.1.2.1.10.127.1.3.5.1.6 |
| docsIfCmtsModFECErrorCorrection The number of correctable errored bytes (t) used in
forward error correction code. The value of 0 indicates
that no correction is employed. The number of check bytes
appended wi… | column | Bytes Integer32 | .1.3.6.1.2.1.10.127.1.3.5.1.7 |
| docsIfCmtsModFECCodewordLength The number of data bytes (k) in the forward error
correction codeword.
This object is not used if docsIfCmtsModFECErrorCorrection
is zero. | column | Bytes Integer32 | .1.3.6.1.2.1.10.127.1.3.5.1.8 |
| docsIfCmtsModScramblerSeed The 15-bit seed value for the scrambler polynomial. | column | Integer32 | .1.3.6.1.2.1.10.127.1.3.5.1.9 |