Comtech EF Data CRS-300 - Manual (Page 204)

CRS-300 1:10 Redundancy Switch MN/CRS300.IOM
Front Panel Operation Revision 19
6–10
If the CDM-Qx/QxL configuration includes Carrier-in-Carrier, this HOLDOFF
time should be no less than 8 seconds.
When the Switch is currently backing up a Traffic Modem and that offline modem’s fault clears,
the Switch continues to back it up until another active modem becomes faulted. In this case, the
RESTORE HOLDOFF is the length of time that the originally faulted modem must stay unfaulted
before the Switch automatically puts it back online so that the Redundant Modem becomes
available to bridge the newly faulted modem.
6.2.2.3.3 CONFIG: OPTIONS  ALARM-MASK
ALARM MASK: MODEM-ALARMS
SW-ALARMS AUDIO (ENTER)
Select MODEM-ALARMS, SW-ALARMS, or AUDIO, and then press [ENT]. The Switch logs and
reacts to both its own faults and modem faults. Either type of faults may be masked using this
submenu. In addition, an audible buzzer can be enabled as an additional indicator.
CONFIG: OPTIONS  ALARM-MASK  MODEM-ALARMS
MODEM ALARM MASK: NONE
TX RX TX+RX (ENTER)
Use the ◄ ► arrow keys to select from the choices shown, and then press [ENT].
You may mask Transmit or Receive Traffic faults (or both) from being reacted to by the
Switch. This not only prevents the Switch from performing AUTO mode functions when
these modem faults are sensed, but also keeps the faults from being logged by the Switch.
These selections are global to all the modems. If masking of individual modem
faults is desired, it should be done directly on the modem. Unmasked modem
faults are logged on active modems only.
CONFIG: OPTIONS  ALARM-MASK  SW-ALARMS
SWITCH ALARM MASK: NONE
PSU-A PSU-B (ENTER)
Use the ◄ ► arrow keys to select NONE, PSU-A, or PSU-B, and then press [ENT].
You may select which of the plug-in power supply units to mask. Only one of the units can
be masked at a time, if needed. This would normally be done if you choose to run with only
one supply, or if you remove a faulty supply for service or replacement.