Chapter 26: Connection Admission Control
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
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Percent allowed-normal can not be greater than 90 or greater than percent allowed-total
Percent allowed-emergency can not be greater than 90 or greater than percent allowed-total
Percent allowed-total can not be greater than 90
Where the values for normal and emergency percentages <percent> must be expressed as integers from 0-90
Multicast Allowed Usage + Emergency Reserved Usage + Normal Reserved Usage can not be greater than 100%
Percent reserved- percent reserved-emergency are reserving bandwidth for normal and emergency calls. The
sum of the two values cannot exceed allowed-total of the channel bandwidth.
The following rules apply only when preemption-allowed is disabled:
Normal Reserved Usage + Emergency Allowed Usage can not be greater than Total Allowed Usage
Normal Allowed Usage + Emergency Reserved Usage can not be greater than Total Allowed Usage
Load Balancing of Voice Bearer Flows
Load balancing on voice bearing service flows, such as PC1.x and PC2.0 voice, and PCMM voice for example, distributes
some of the bandwidth burden otherwise imposed on a single upstream and downstream pair.
Each new dynamically-created, non-bonded service flow on a multi-channel CM is distributed to the upstream or
downstream channel with the most available voice bandwidth within the CM's transmit or receive channel sets as
applicable to service flow attributes.
This feature functions differently from the previous mechanism to allocate voice flows in the following ways:
Supports multi-channel CMs
Applies to non-bonded flows on bonded modems
Does not default to the primary upstream and downstream channels
Applies to dynamically created USG/voice flows only, including PC1.x and PC2.0 voice, PCMM voice
Uses least-loaded channel based on lowest current allocated bandwidth percentage and attributes assigned
Feature is on by default.
Note: It is recommended that your entire subscriber-side system be equipped with an uninterruptible power supply (UPS)
to avoid any potential power failure issues.