Chapter 2: C4/C4c CMTS Features
STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved. 66
Provisionable Number of Upstream Equalizer Taps
Operation Mode to Not Store Bad BPI Certificates
32D Annex A Support provides the ability for the XD CAM to operate in a mode where it can support 32 Annex A (8 MHz)
EuroDocsis 3.0-capable downstreams.
IS-IS Point-to-Point Adjacency or point-to-point links simplify the shortest path found (SPF) calculation and reduces both
the network convergence times and size of the topography database.
Support for Cable Modem Status for Out of Range provides a recovery mechanism for downstream bonded flows that
encounter an error in the sequence numbers of the flows which are out-of-sync in the CMTS. The Downstream Service ID is
reset on the DCAM, toggling the sequence change count and resetting the sequence number to zero.
Downstream Output Power Loss Detection and Recovery provides for logging and/or recovering of the DCAM depending
on the threshold reached and how the feature is configured.
24 Downstream Channel Bonding provides support for up to 24 downstream channels, including supporting dynamic
bonding groups when verbose Receive Channel Profiles (RCPs) are enabled.
Upstream-Only Cable Modem Move allows for a CM with downstream bonding enabled and a single upstream that has
not been assigned a Transmit Channel Configuration (TCC) during registration to use any type of initialize technique
identified in the command.
Piggyback Support on RTP Flows allows CMs to register with a modem config file that has an upstream service flow with
both a scheduling type "Real-Time Polling Service" and a Request/Transmission Policy with bit 4 disabled.
Show tech-support brief provides an additional parameter to the show tech-support command to reduce both the time
for the command to run and the volume of the output.
Provisionable Number of Upstream Equalizer Taps allows for selecting the number of taps in the receiver’s equalizer that
is set on a logical channel basis. The new CLI command supports either a five (5) or 24 tap setting.
Operation Mode to Not Store Bad BPI Certificates provides a mode that inhibits storing bad certificates, which can
prevent valid certificates from being added to the database, possibly blocking good modems from registering properly.
Release 8.2 Features
The following is a list of the new features in Release 8.2:
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