Chapter 2: C4/C4c CMTS Features
STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved. 55
Lines/downstream 1800
Lines/C4 24000
BHCA/downstream 5000
BHCA/C4 66600
Simultaneous half calls/downstream 260
Programmable unicast request opportunity polling interval.
Note: The voice call requirements specifically assume that only GNAMs are used. If the system contains any FastENAMs,
the per-chassis line and MTA limits must be reduced to 1000.
Certain features may impact software upgrade procedures. For more information related to upgrades or for non-
conformance issues, see the Cadant® C4®CMTS Software Upgrade Notes. This file is included on the software CD.
In addition to the previously described features and functionality, the following section describes the C4 CMTS feature set
for Release 5.0. This includes:
Release 5.0 Features
The following is a list of the new features included in Software Release 5.0.x:
FlexPath
®
Dynamic Load Balancing
Legal Intercept
PIM-SSM
IGMP ACLs
Secure NTP
DHCP Test Injection
Named Access-List
Additional Modem States
Integrated Upstream Agility
Clear cable host/modem (MAC DB)
ARP Throttling
Number of supported VRFs increased to 32
Downstream center frequency step size is now 125 kHz (formerly 250)
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