Chapter 3 - Using the Command Line Interface (CLI) 3-23
Vipersat Configuration
the Nominal Data Slot Size and the Minimum Data Slot Size parameters. These
parameters are operator selectable. The speed with which STDMA reacts to
changes in dynamic load is a function of the Statistics Accumulation Window
parameter and the Cycles per Burst Map parameter, both of which are also oper-
ator selectable.
STDMA/SCPC Automatic Switching
One of the most powerful features of the Vipersat CDM-570/570L is the capa-
bility to perform automatic switching between STDMA mode and SCPC mode
based on bandwidth demand. The configuration options that are available to
meet customer-specific requirements are extensive, and include switching based
on Load, Application (Voice and Video RTP), ToS, and QoS.
Note: Care must be taken when configuring the Auto Switching features
of the Vipersat system to ensure that there is no duplication or
overlap of switching functions between Application, ToS, and
QoS for a particular traffic flow. Only one of these switching meth-
ods should be utilized for any one flow requirement.
The functions available for configuring the switching operations depend on
whether the target CDM-570/570L is a Hub unit or if it is a Remote unit.
In order for the target CDM-570/570L to be automatically switched between
SDTMA and SCPC modes, the Auto Switching feature must be enabled as
described in the section “Feature Configuration” on page 3-4.
Selecting Automatic Switching from the Vipersat Configuration screen
shown in figure 3-5 will display the STDMA/SCPC Auto Switching screen
shown in either figure 3-33 (Hub modem) or figure3-34 (Remote modem).
Figure 3-33
STDMA/SCPC Auto Switching screen (Hub)
NOTE