Description: This variable is a bitmap of the X21 Line ALarms
on the FRSM-HS1. A value of zero indicates no alarms.
Itemized below are the individual bits:
BitPosition    Alarm
-----------    -----
 0             C/I signal is OFF (also used to indicate LOS)
 1             Clock rate mismatch (used in DTE mode)
 2             Internal Loopback (diagnostic loopback)
 3             HSSI Local LoopA (line is in loopback)
 4             HSSI Local LoopB (line is in loopback)
 5             Remote Loopback (line is transmitting loopcodes)
 6             For V35 DTE mode, DCD and CTS both are inactive
 7             For V35 DCE mode, RTS is inactive
 8             No cable attached to V35 backcard
 9             Wrong cable attached to V35 backcard
If all the bit-states are 0s:
 - line is not in alarm, or
 - line not in loopback, or
 - line is transmitting any loopback codes.