Table of Contents
Advertisement
SMS-758 Modem Protection Switch
3.2.3.3 Modem Verification
To verify the modem configurations, press [F2] (VERIFY) in the MODEM
CONFIGURATION menu, and proceed as follows:
1. To verify the configuration of an individual prime or backup modem, use the
2. To verify the configuration of all the active modems, use the [F2] (ALL) menu.
The switch displays "OK" or "ERROR", showing the result of the configuration loading
process. An "ERROR" response results in an M:N fault.
Note: When any change is made in the prime or backup modem configuration, the
operator must reload that modem's configuration into the switch. If this is not done, a
configuration verify error will be flagged in the M:N fault menu.
3.2.4 Faults
When any fault LED(s) is lighted, an operational fault condition exists. However, LEDs
are only a summary visual alarm. The operator should use the FAULT menu to
determine the exact cause of the fault and takes remedial action, if necessary.
The FAULT menu provides fault information. Use the [1], [2], [3], [4], [NEXT], and
[PREV] keys to reveal the nature of any fault indicated by a front panel red LED.
The following sections list all possible fault messages that could appear in each category.
Refer to Section 5.2 for a list of possible causes, and for the fault isolation procedures.
3.2.4.1 Modulator Operation Fault
The fault menu displays MOD fault(s) when a modulator backup switching operation
failure occurs. The messages will be as follows:
BK-UP FAULT MOD X
MN/SMS758 Rev. 3
[F1] (SELECT) menu. If F1 (SELECT) is pressed, the menu presents options of
PRIME (F1) and BACKUP (F2). After the selection of prime or backup, the last
menu will require entry of the prime or backup modem number. The switch
automatically verifies the configuration of the modem selected.
If F2 (ALL) is pressed, the menu requires that [ENT] be pressed to begin the
verifying of all active modem configurations.
(Where: X = 1 to 8.)
Operation
3–13
Advertisement
Table of Contents
