Primary Heart Beat; Home State Revert - Comtech EF Data Vipersat CDM-570 User Manual

This managing address is automatically updated on a periodic basis for modems
that are newly enabled, incorrectly set, or following VMS changeovers (redun-
dancy switching). The status of the registration process is displayed for this
parameter as follows:
• NOT-DEFINED — modem has booted up, but is unaware of the
• No STDMA Xmit Grant — operator has entered managing address, but
• Sending Registration (n) — modem is receiving burst maps and the
• Registered — modem is registered with the VMS. For VMS v3.6.0 and

Primary Heart Beat

This menu item appears for the Hub modem only.
The Primary Heart Beat feature is a redundancy heart beat message for
primary Hub units that provides the option for a periodic communications check
message to be sent from the Hub modem to the VMS for backup recovery in
N:M redundancy (protected) configurations. The message interval is hard-coded
in the modem.
Enter P at the command prompt in the Vipersat Configuration screen
(figure 3-6) to toggle this feature between Enabled and Disabled.

Home State Revert

This menu item appears for the Remote modem only.
The Home State Revert feature allows automatic resource recovery to be
performed on SCPC connections when a communications failure occurs
between the VMS and a Remote, such as a rain fade condition, a Remote unit
power down, or a hardware failure. The period of time (in minutes) for a failure
is configured in the VMS for each Remote in the network. Should communica-
tions be lost for more than the specified time period, the Remote will automati-
cally revert to its Home State settings and the VMS will remove all allocated
resources (bandwidth, demod(s)), freeing them for use by any other Remote in
the Vipersat network.
C h ap t e r U s i n g t h e C o m m a n d L in e I n t e r f a c e ( C L I )
3 -
managing address.
modem (Remote) is not currently receiving burst maps.
number of registration attempts (n) is displayed.
later, the VMS version number is also displayed (as shown in figure 3-6).
V i p e r s a t C o n f i g u r a t io n
3-47