Technical information

Cuda 12000 IP Access Switch CLI Reference Guide
downstream modulation 151
downstream modulation
Sets the downstream modulation scheme used on the selected CMTS interface.
Caution: Specifying a new downstream modulation causes the module to save the
new setting to FLASH and reboot. If other CMTS parameters have been changed,
you should use the save command to persist those changes before issuing the
downstream modulation change.
Mode
interface:cable:csi(<c/s/i>)
Syntax
downstream modulation {qam64 | qam256}
Arguments
Example
The following example sets downstream modulation for the CMTS card in slot 1, chassis 1 to
256 QAM.
cli:172.16.19.10:root# save
Saving slot: 1/1 ..
Save request passed for slot 1/1
cli:172.16.19.10:root# interface 1/1/1
mode: interface:cable:csi(1/1/1)
cli:172.16.19.10:interface:cable:csi(1/1/1)# downstream modulation qam256
cli:172.16.19.10:interface:cable:csi(1/1/1)#
qam64 Sets downstream modulation on the selected CMTS card to 64 QAM.
qam256 Sets downstream modulation on the selected CMTS card to 256 QAM.