Comtech EF Data CDM-760 - Manual (Page 157)

Front Panel Operation Revision 2
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760
6–71
2) Wait until “Time Remaining Refills In” reaches 00:00:00:00.
Using Fractional CnC is not a normative mode of operation. To best inform you
that your modem is running Fractional CnC (i.e., the “FractionalCnC:Time
Remaining” counter is actively decrementing), your modem does the
following:
• The RED Unit Status LED on the front panel of the modem will blink on and
off.
• The modem generates an Event in the Event Log every 12 hours indicating
that Fractional CnC is running.
• When connected to a 1:1 redundant switch, the modem generates a
phantom fault every 12 hours, allowing the fully operational CnC modem
to return online if its fault has cleared.