PM
Performance Monitoring - Measures the quality of service and identifies degrading or
marginally operating systems (before an alarm is generated).
PMA
Performance Monitoring Application
Pointer
An indicator whose value defines the frame offset of a virtual container with respect to
the frame reference of the transport entity on which the Virtual Container is supported.
POTS
Plain Old Telephone Service
PP
Pointer Processing
PPC
Pointer Processor and Cross-connect
Primary OMS
NMS that is usually managing a network element. If the primary NMS fails,
management of the network element is passed over to the secondary NMS. A network
element should be provisioned normally on the primary NMS and then be configured for
use on the secondary NMS. See also Geographic Redundancy.
Primary Reference Clock (PRC)
The main timing clock reference in SDH equipment.
Protected Domain
The protected domain for an NMS contains all the network elements for which this
manager is the primary NMS and which are protected by another secondary NMS. See
also Geographic Redundancy.
Protecting Domain
The protecting domain for an NMS contains all the network elements for which this
manager is the secondary NMS. See also Geographic Redundancy.
Protection
Extra capacity (channels, circuit packs) in transmission equipment that is not intended to
be used for service, but rather to serve as backup against equipment failures.
Provisioning
Assigning a value to a system parameter.
PSA
Partially Service Affecting
PSDN
Public Switched Data Network
Glossary
...................................................................................................................................................................................................................................
GL-22
Lucent Technologies - Proprietary
See notice on first page
365-312-847R4.0
Issue 4, November 2006