Rainbow Electronics DS21458 - Manual (Page 70)

DS21455/DS21458 Quad T1/E1/J1 Transceivers
70 of 270
Table 11-3. E1 ALARM CRITERIA
ALARM SET CRITERIA CLEAR CRITERIA
ITU
SPEC.
RLOS
An RLOS condition exists on
power-up prior to initial
synchronization, when a resync
criteria has been met, or when a
manual resync has been initiated
via E1RCR1.0
RCL
255 or 2048 consecutive zeros
received as determined by
E1RCR2.0
In 255-bit times, at least 32 ones
are received
G.775/G.962
RRA
Bit 3 of non-align frame set to
one for three consecutive
occasions Bit 3 of nonalign frame set to
zero for three consecutive
occasions
O.162
2.1.4
RUA1
Fewer than three zeros in two
frames (512 bits) More than two zeros in two
frames (512 bits) O.162
1.6.1.2
RDMA
Bit 6 of time slot 16 in frame 0
has been set for two consecutive
multiframes
V52LNK
Two out of three Sa7 bits are
zero
G.965