DS2154
Table 5-1. Alarm Criteria
ALARM
SET CRITERIA
CLEAR CRITERIA
ITU SPEC.
Over 16 consecutive frames
(one full MF) time slot 16
contains less than three 0s
Over 16 consecutive frames
(one full MF) time slot 16
contains three or more 0s
G.732
RSA1
4.2
(receive signaling all 1s)
Over 16 consecutive frames
(one full MF) timeslot 16
contains all 0s
Over 16 consecutive frames
(one full MF) time slot 16
contains at least a single 1
G.732
5.2
RSA0
(receive signaling all 0s)
Bit 6 in time slot 16 of frame Bit 6 in time slot 16 of frame 0
0 set to 1 for two consecutive set to 0 for a two consecutive
O.162
2.1.5
RDMA
(receive distant multiframe
MF
MF
alarm)
Less than three 0s in two
frames (512 bits)
More than two 0s in two
frames (512 bits)
O.162
RUA1
(receive unframed all 1s)
1.6.1.2
Bit 3 of non-align frame set to Bit 3 of non-align frame set to
O.162
2.1.4
RRA
1 for three consecutive
occasions
0 for three consecutive
occasions
(receive remote alarm)
255 (or 2048) consecutive 0s In 255-bit times, at least 32 1s
received are received
G.775 /
G.962
RCL
(receive carrier loss)
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ROCHESTER [ Rochester Electronics ]
