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18 CONFIGURING CABLE MODEM

TERMINATION SYSTEMS

Cable Modem Termination Systems (CMTS) consists of DOCSIS and

EuroDOCSIS modules within the Cuda 12000. Configuring a CMTS consists

of the following functions:

■Configuring the MAC Interface (page 370)

■Configuring the Downstream Channel (page 379)

■Configuring Upstream Channels (page390)

■Configuring Admission Control (page 408)

■Configuring Frequency Hopping (page411)

■Defining Modulation Profiles (page418)

■Configuring CMTS Privacy Parameters (page428)

■Configuring Flap Control (page428)

Before you can effectively perform these tasks, you need an understanding

of CMTS upstream frequency reuses.

The Cuda 12000 supports the configuration of upstream channels with the

same center frequencies, if the channels are on separate non-combined

physical plants. Referred to as upstream frequency reuse, this allows an

operator to set aside less of the valuable upstream spectrum for CMTS use.

Note, however, that for proper operation upstream channels must also be

configured to have the same channel widths and minislot sizes.