Chapter 3: C4/C4c CMTS Specifications
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
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40,000 subscribers per chassis with the SCM II EM/EM (U) and SCM 3 board
The maximum number of modems/eMTAs is 30,000; the remaining devices must be STBs
51,000 downstream service flows
51,000 upstream service flows
51,000 downstreams classifiers
32,000 downstream service flows per 16D or XD CAM
13,200 upstream service flows per 24U CAM
9,000 upstream service flows per 12U CAM
4,500 subscribers per 12U CAM
6,600 subscribers per 24U CAM
16,000 subscribers per 16D and XD CAMs
320 simultaneous Service Independent Intercept (SII) taps
C4c CMTS Chassis
A fully equipped C4c CMTS chassis offering basic service will provide reasonable performance up to the following
suggested subscriber limits:
Chassis scaling
Numbers depend on how many cards are configured in the chassis and the number of subscribers per UCAM or
DCAM.
Component scaling
1,000 subscribers per 12U CAM
6,600 subscribers per 24U CAM
16,000 subscribers per 16D and XD CAMs
2,000 subscribers per 16D downstream channel
50 simultaneous PacketCable CALEA taps
32,800 downstream service flows
32,800 upstream service flows
32,800 downstreams classifiers
320 simultaneous Service Independent Intercept (SII) taps
Chassis with the SCM II EM/EM (U) and SCM 3 board