Comtech EF Data CDD-56X Series Vipersat - Manual (Page 58)

Vipersat Configuration MN/22137, rev 1
3-24 Vipersat CDD-56X Series User Guide
Set Remote Policies
This menu item, which appears for GIR and Entry Channel Hub types, allows
each Remote to be configured for specific data switching conditions.
For Hub STDMA Controllers operating in either GIR or Entry Channel mode,
typical load switching is not the mechanism that performs the transition from
STDMA to SCPC mode due to traffic load. In GIR mode, the Remote is
switched to SCPC as soon as the GIR threshold is reached. In Entry Channel
mode, the Remote is switched to SCPC as soon as the Hub receives the first
transmission from the Remote.
For both GIR and ECM, the event of switching from STDMA to SCPC can only
occur if the SCPC Switch Rate parameter is set to a value greater than 0 (zero).
If the switch rate for a Remote is set to 0 kbps, that Remote will remain in
STDMA mode and will only switch to SCPC mode due to an application switch
or a diagnostic (manual) switch.
Entering P at the STDMA Remotes Menu command prompt displays the
Remote Policies screens shown in figure 3-26 (GIR Hub) and figure 3-28
(Entry Channel Hub).
Figure 3-26 STDMA Remote Policies screen (GIR Hub)
Entering the Remote number at the command prompt in figure 3-26 allows the
Guaranteed Information Rate and the Automatic Load Switch Rate for that
Remote to be set, as shown in figure 3-27. Note that the Available Bandwidth is
displayed for reference in this screen to assist with entering the appropriate
rates. The cycle length for GIR is limited to a maximum of one second.