Chapter 39: Additional Classifier Support
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
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Multiple Grants Per Interval (MGPI)
When using this feature, multiple calls can be placed on a single flow. This is achieved using MGPI.
Maximum Active Call Capacity
The maximum active call capacity is dependent on all of the network elements including the call server, customer premise
PBX, and other services that may be passing through the cable modem. The two PRIs behind the cable modem and
gateway support up to 46 active calls.
Conventional VoIP traffic allows one call to be carried over a single dynamic upstream flow on a modem with a constant
(fixed) Tmin/Tmax.
Dynamic Tmin and Tmax
The dynamic Tmin and Tmax of the flow vary up and down in discrete increments when observed over time as telephone
calls carried by the flows come and go. The actual traffic per unit of time varies in the same way as can be observed in the
output of the show cable modem detail command. The number of calls on a single flow is determined by the application
server.