Panasonic 1200N manual Lop, Los, Lpf, Lsap, Lsb, Lsr

L Glossary

Logical Node

An abstract representation of a peer group or a switching system as a single point.

Logical Node ID

A string of bits that unambiguously identifies a logical node within a routing domain.

LOP

Loss of Pointer: A condition at the receiver or a maintenance signal transmitted in the PHY overhead indicating that the receiving equipment has lost the pointer to the start of cell in the payload. This is used to monitor the performance of the PHY layer.

LOS

Loss of Signal: A condition at the receiver or a maintenance signal transmitted in the PHY overhead indicating that the receiving equipment has lost the received signal. This is used to monitor the performance of the PHY layer.

LPF

Low Pass Filter: In an MPEG-2 clock recovery circuit, it is a technique for smoothing or averaging changes to the system clock.

LSAP

Link Service Access Point: Logical address of boundary between layer 3 and LLC sublayer 2.

LSB

Least Significant Bit: The lowest order bit in the binary representation of a numerical value.

LSR

Leaf Setup Request: A setup message type used when a leaf node requests connection to existing point-to-multipoint connection or requests creation of a new multipoint connection.

LT

Lower Tester: The representation in ISO/IEC 9646 of the means of providing, during test execution, indirect control and observation of the lower service boundary of the IUT using the underlying service provider.

B-42	Centillion 1200N ATM Switch User Manual
	NTP 297-8103-903