wanT1E1StatsRAIs

The Far End Alarm failure is also known as 'Yellow Alarm'
in the T1 case and 'Distant Alarm' in the E1 case.
              
For D4 links, the Far End Alarm failure is declared when
bit 6 of all channels has been zero for at least 335 ms
and is cleared when bit 6 of at least one channel is
non-zero for a period T, where T is usually less than one
second and always less than 5 seconds.  The Far End Alarm
failure is not declared for D4 links when a Loss of
Signal is detected.
              
For ESF links, the Far End Alarm failure is declared if
the Yellow Alarm signal pattern occurs in at least seven
out of ten contiguous 16-bit pattern intervals and is
cleared if the Yellow Alarm signal pattern does not occur
in ten contiguous 16-bit signal pattern intervals.
              
For E1 links, the Far End Alarm failure is declared when
bit 3 of time-slot zero is received set to one on two
consecutive occasions.  The Far End Alarm failure is
cleared when bit 3 of time-slot zero is received set to
zero.

MIB

WANSTATS-MIB

OID

.1.3.6.1.4.1.11.2.3.7.6.1.5.1.8.1.1.1.1.21

Type

column

Access

readonly

Status

current

Parent

wanT1E1StatsEntry