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Maintenance Description
9-46 Issue 3 June 2001
transmit power is monitored independently for service and protection optical
facilities.
OC-3 Section Parameters 9
Performance Monitoring Enabling 9
Collection of section parameters for OC-3 interfaces are initiated when a slot is
equipped with an OLIU circuit pack. Parameters continue to be available in
reports and generate appropriate TCAs until the OLIU is removed and the
update command or the UPD/INIT button is pressed.
Severely Errored Frame Seconds (SEFS) 9
This parameter counts the number of seconds during which an OOF, LOS, or
OLIU circuit pack failure occurred. SEFSs are counted and thresholded
independently for the service and the protection lines.
OC-3/EC-1 Line Parameters 9
Performance Monitoring Enabling 9
Collection of line parameters for OC-3 interfaces are initiated when a slot is
equipped with an OLIU circuit pack. Parameters continue to be available in
reports and generate appropriate TCAs until the OLIU is removed and the
update command or the UPD/INIT button is pressed.
Collection of line parameters for an EC-1 high speed interface is initiated when
the slot is equipped with an STS1E circuit pack set for high-speed.
Collection of line parameters for EC-1 low-speed interfaces are initiated when a
slot is equipped with an STS1E circuit pack set for low-speed and the port is in the
in service (IS) state. Parameters continue to be available in reports and generate
appropriate TCAs until the input signal is removed and the update command or
the UPD/INIT button is pressed. Alternatively, the EC-1 low-speed line parameters
can be disabled by setting the EC-1 port state to not monitored (NMON) using the
set-state-ec1 command.
Line Coding Violations (B2 Parity) 9
To monitor the performance of the OC-3 (or EC-1) line, the line BIP-8 (B2 parity) is
calculated, written, and checked for errors. The line B2 parity violation counter is
incremented for each line BIP error detected. Each line BIP-8 can detect up to
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