Chapter 9: Upstream Cable Access Modules (UCAMs)
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
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Ingress Cancellation Interval: 0
Ingress Cancellation Size: 0
Map Size (800 microsecond ticks): 1
Logical Channel: 0 1
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Channel State IS OOS
Channel-ID: 1 25
Channel Type: tdma tdma
Modulation profile id: 2 2
Ranging backoff range: 2 - 7 2 - 7
Data backoff range: 2 - 8 2 - 8
Slot Size (6.25 microsecond ticks): 2 2
SCDMA active codes: - -
SCDMA codes per slot: - -
SCDMA frame size: - -
SCDMA hopping seed: - -
Spectrum Group ID: - -
Spectrum Group State: - -
Attribute Mask: 0x00000000 0x00000000
Number of Equalizer Taps: 24 24
The table below shows the commands to restore default values for a number of upstream and downstream parameters.
These are the settings which most users will choose for basic configuration. In each command the default values can be
replaced as needed.
Table 39.
Accepting Default Parameters for Cable Upstream Channels of a 12U CAM
Purpose
CLI Command
Accept default modulation profile. Default = 2.
configure interface cable-upstream <slot/port> cable
modulation-profile 2
Accept default channel width. Default = 3.2 MHz.
configure interface cable-upstream <slot/port> cable
channel-width 3200000
Accept default upstream power level. Default = 0.
Power range varies with channel width selection.
Range = -4 to 3 dBmV if channel width is 3.2 MHz for
upstream receive power levels).
configure interface cable-upstream <slot/port> cable
power-level 0