Cisco Systems UBR900 specifications Cable-modem upstream preamble qpsk, Usage Guidelines Examples

cable-modem upstream preamble qpsk

cable-modem upstream preamble qpsk

To enable the QPSK modulation scheme in the upstream direction from the cable access router interface to the headend, enter the cable-modem upstream preamble qpsk command from interface configuration mode. Use the no form of this command to disable upstream modulation for the interface.

cable-modem upstream preamble qpsk

no cable-modem upstream preamble qpsk

Syntax Description

This command has no arguments or keywords.

Defaults

Enabled

Command Modes

Interface configuration

Command History

ReleaseModification

11.3 NA This command was introduced.

Usage Guidelines

Examples

The following example shows how to enter the cable-modem upstream preamble qpsk command for a cable access router interface, starting from global configuration mode:

uBR924(config)# interface cable-modem 0

uBR924(config-if)#cable-modem upstream preamble qpsk

uBR924(config-if)#

Configuring the Cisco uBR900 Series Cable Access Routers 63