Cisco uBR924 Configuration Manual page 34

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
Release
11.3 NA
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)#
34 Cisco IOS Release 12.0(5)T
Modification
This command was first introduced.