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Cuda 12000 IP Access Switch CLI-based Administration Guide
Configuring the Downstream Channel 385
Downstream Modulation
The Downstream modulation parameter sets the modulation rate for a
downstream channel. The CMTS supports the following two modulation
types.
You set the downstream modulation type by performing the following tasks.
Task Command
1. Enter interface configuration
mode.
interface cable <c/s/i>
2. Configure modulation used on
the downstream channel. Valid
values:
■ qam64: Sets the interface speed
at 30 Mbps
or
■ qam256: Sets the interface
speed at 40 Mbps
downstream modulation
{qam64 | qam256}