Chapter 2: C4/C4c CMTS Features
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
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2Dx12U CAM — full DOCSIS 2.0 (A-TDMA and S-CDMA)
Proprietary automatic ingress noise cancellation
Flash disk re-partitioning
Graceful restart with OSPFv2
Real-time FFT of upstream (compatible with C3 CMTS MIBs)
NAM IP interface bundling
Increased subscriber limits per chassis: 32,000 CMs per chassis, and 3,000 CMs per downstream (500 per upstream in
1x6 operation)
Preemption of normal calls by new emergency calls when BW is limited
Additional audits: FCM, file system, 2Dx12U
CM reset clear trap
Flap List enhancements:
percent of station maintenance ranging opportunities that receive a range request
number of power adjustments exceeding a threshold
Number of CRC errors per CM (2D only)
Number of bytes dropped per CM (congestion and policing)
Virtual System Controller
CLI Improvements:
show/copy running-config
show cable qos profile
assign and display an output name or description for each interface.
To look up syntax and parameters for individual CLI commands, see
(page 1127). Each entry in
the alphabetical list of commands is hyperlinked to the appropriate page in the manual.
Automatic fan speed control
Encryption of MD5 shared secret for routing protocols in CLI output
Disabled ICMP Unreachables
OSPF "point-to-point" interface support
Increased AC/DC power solution
Voice call requirements:
At least 1,000 MTAs (Multimedia Terminal Adapters) per downstream
At least 5,000 BHCAs with completion rate of 99.5%