Chapter 46: Command Line Descriptions
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
1395
configure cable modulation-profile * iuc
Purpose
Creates a new modulation profile or modifies an existing profile.
Default Access Level
15
Command Syntax
configure cable modulation-profile <id> iuc <interval usage code> [mod <qpsk |qam8
|qam16|qam32|qam64|qam128>] [pre-len <preamble len>] [diff <true|false>] [fec-tbytes <no of bytes>]
[fec-len <FEC code word length>] [seed <scrambler seed>] [burst-len <max burst len>] [last-cw
<true|false>] [scrambler <true|false>] [guard-time-size <0|8
–
96|no>] [int-depth <depth>] [int-blocksize
<blocksize>] [pre-type <preamble type>] [tcm <on|off>] [subframe-code <subframe size>] [docsis-mode
<tdma | atdma | tdma-atdma>]
configure cable modulation-profile <id> iuc <interval usage code> [mod <qpsk |qam8
|qam16|qam32|qam64|qam128>] [pre-len <preamble len>] [diff <true|false>] [fec-tbytes <no of bytes>]
[fec-len <FEC code word length>] [seed <scrambler seed>] [burst-len <max burst len>] [last-cw
<true|false>] [scrambler <true|false>] [guard-time-size <0|8
–
96|no>] [int-depth <depth>] [int-blocksize
<blocksize>] [pre-type <preamble type>] [tcm <on|off>] [subframe-code <subframe size>] [docsis-mode
<tdma | atdma | tdma-atdma>] no
Supplemental
Information
Modulation profiles are pre-defined sets of upstream channel parameters which make it easier to configure or reconfigure upstream
channels. Each upstream port must be associated with an existing modulation profile. Modulation profiles must be created and then
associated with specified upstream ports.
There are two types of modulation profiles present in the C4 CMTS when the UCAM boots up: default and pre-defined. The first is
the default modulation profiles automatically created for the user. There are two of this type: modulation profiles 1 and 2. Following
are the default settings for modulation-profile 2.
Note: The default modulation profiles 2 cannot be deleted.
Modulation-profile 2:
Interval Chan Mod Pre Dif FEC FEC Scr Max Guar L Scr ---Atdma--- Prea -----Scdma-----
Usage Type Type Len Enc CW amb Bur Time C amb Int Int mble TCM Int Sp Sub
Code En Len Seed Siz Size S En Depth Block Type En Size En Cod
---------------------------------------------------------------------------------------------
1 request tdma qpsk 56 F 0 16 338 0 8 F T - - - - - - -
3 initial tdma qpsk 640 F 5 34 338 0 48 F T - - - - - - -
4 station tdma qpsk 384 F 5 34 338 0 48 F T - - - - - - -
5 short tdma qpsk 168 F 6 75 338 7 8 T T - - - - - - -
6 long tdma qpsk 192 F 10 220 338 0 8 T T - - - - - - -