Huawei OptiX OSN 550 Configuration Manual page 461

OptiX OSN 550 Multi-Service CPE Optical Transmission
System
Configuration Guide
Performance register
performance threshold A limit for generating an alarm for a selected entity. When the measurement result
Permanent Virtual
Connection
PGND
PGND cable
PIM-SM
PIR
plesiochronous
Plesiochronous Digital
Hierarchy
PLL
Pointer
POS
Power box
Power distribution unit A unit that performs AC or DC power distribution.
PPP
PRBS
PRC
Primitive
Private Line
Protection path
Protection service
Issue 02 (2011-06-30)
The memory space for performance event counts, including 15-min current performance
register, 24-hour current performance register, 15-min historical performance register,
24-hour historical performance register, UAT register and CSES register. The object of
performance event monitoring is the board functional module, so every board functional
module has a performance register. A performance register is used to count the
performance events taking place within a period of operation time, so as to evaluate the
quality of operation from the angle of statistics.
reaches or exceeds the preset alarm threshold, the performance management system
generates a performance alarm.
A connection between two ATM end hosts. The connection consists of PVPs between
the ATM end hosts and their respective switches, and SVPs between the switches.
Protection Ground
A cable which connects the equipment and the protection grounding bar. Usually, one
half of the cable is yellow, whereas the other half is green.
Protocol Independent Multicast-Sparse Mode
Peak Information Rate
Qualifying two time-varying phenomena, time-scales, or signals in which corresponding
significant instants occur at the same rate, any variations in rate being constrained within
specified limits. Note: Corresponding significant instants are separated by time intervals
having durations which may vary without limit.
A multiplexing scheme of bit stuffing and byte interleaving. It multiplexes the minimum
rate 64 kit/s into the 2 Mbit/s, 34 Mbit/s, 140 Mbit/s, and 565 Mbit/s rates.
Phase-Locked Loop
An indicator whose value defines the frame offset of a virtual container with respect to
the frame reference of the transport entity on which this pointer is supported.
Packet Over SDH
A direct current power distribution box at the upper part of a cabinet, which supplies
power for the subracks in the cabinet.
Point-to-Point Protocol
See Pseudo Random Binary Sequence
Primary Reference Clock
In the hierarchy of signaling system No.7, when the upper layer applies for services from
the lower layer or the lower layer transmits services to the upper layer, the data is
exchanged between the user and the service provider. The data transmitted between
adjacent layers is called primitive.
A line, such as a subscriber cable and trunk cable, which are leased by the
telecommunication carrier and are used to meet the special user requirements.
A specific path that is part of a protection group and is labeled protection.
A specific service that is part of a protection group and is labeled protection.
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A Glossary and Acronyms
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