Verilink Access Manager 2000 (896-502037-001) Product Manual - Manual (Page 347)

Access Manager 2000 Manual A-15
O, P
On-line On-line is a selection of Access Manager 2000 available from the Main
Menu. Under On-line are operations that access the contents of a circuit
element’s performance registers and any trouble conditions which the
circuit element may be detecting. Under the On-line menu, circuit
elements may be commanded to run diagnostic tests and set loopbacks.
The current configuration of network elements is accessible from the
On-line menu of Access Manager 2000.
OOF See Out-of-Frame.
Out-of-Frame A condition when any two of four or two of five consecutive frame bits
received from the T1 line are incorrect. This causes the CSU to attempt
to reframe.
Out-of-Frame
Second A second during which an Out-of-Frame condition exists.
Parity A technique used to help detect data transmission errors. A non-
information bit is added to a byte.
Parts per Million This refers to the number of unique units present in a group of one
million units.
Payload Loopback This loopback loops the signal from the DS-1 (T1) line back to the
DS-1 line intact. The signal passes through the CSU when using PLB,
including the repeater, making it useful for testing the CSU from the
far-end circuit.
Performance Data Information generated and stored by the CSU of an NCC or TAC that
indicates the transition quality of a signal received from the DS-1 (T1)
equipment or network.
This information includes data such as ESF error events, errored
seconds, etc. The performance data is stored in numerous registers for
operator retrieval.
Phase The time or angle that a data signal is delayed with respect to a
reference point(s).
PLB See Payload Loopback.
ppm See Parts per Million.
Term Definition