Zhone Technologies IMACS-200 - Manual (Page 187)

Sub Rate Data Ports 8-11
SRU Ports Test Screen
OSS
The Out of Synchronization Seconds field shows the number of seconds that the SRU BERT
has been out of synchronization. Since this is an information-only field, there are no
user-selectable parameters.
BER
The Bit Error Rate (BER) field shows the rate at which errors are being logged. The system
calculates BER by dividing the number of bit errors (BE) by the total number of bits
transmitted during the test. Since this is an information-only field, there are no user-selectable
parameters.
ELAP
The Elapsed time setting shows the running tally of the total number of seconds during the
test. Since this is an information-only field, there are no user-selectable parameters for this
option.
RTS
The Request To Send (RTS) field shows the current status of the RTS control lead. The two
values that can be displayed are on and off. Since this is an information-only field, there are
no user-selectable parameters for this option.
SR OSS
The Subrate Out of Synchronization Seconds (SR OSS) field shows how many seconds in
which there was a Subrate framing loss. Since this is an information-only field, there are no
user-selectable parameters for this option.
LB ST
The Loopback State (LB ST) field indicates whether there are any remotely-initiated
loopbacks currently active on the SRU port. This field will display both latching and
non-latching loopbacks that are initiated from a remote device via in-band loop-up codes. In
addition to none, the six possible messages that can be displayed in that field are l-ocu, l-dsu,
and l-csu for latching loopbacks; or ocu, dsu, and csu for non-latching loopbacks. Since this
is an information-only field, there are no user-selectable parameters for this option.