HP 3162 MRU, NMS, OOF, PAP, PBX, PDU, PDV, PLB, PPP, PRM, RAM, node, port, PSTN, QRSS, GL-6, option, parity, network, payload, protocol, object (SNMP), pulse density

Glossary

MRU	Maximum Request Unit.
network	A configuration of data processing devices used for information exchange.
network interface	The T1 network interface connector on the rear panel of the CSU.
NMS	Network Management System. A computer system used for monitoring and controlling
	network devices.
node	A connection or switching point on the network.
object (SNMP)	A specific item within a Management Information Base (MIB).
OOF	Out Of Frame. An error condition in which frame synchronization bits are in error.
option	A hardware or software function that can be selected or enabled as part of a configuration
	process.
PAP	Password Authentication Protocol. A security technique that requires a user password for
	access to a system.
parity	A way of checking data accuracy by counting the number of bits that have a value of one.
payload	The information bits in a frame.
PBX	Private Branch Exchange. Telephone switching equipment dedicated to one customer. A
	PBX connects private telephones to each other and to the public dial network.
PC	Personal Computer.
PDU	Protocol Data Unit. A message containing protocol-specific information.
PDV	Pulse Density Violation. The number of ones (marks, pulses) is not adequate for the line
	requirement.
PLB	Payload Loopback. Loopback mode that loops the information received on the T1 network
	interface back to the network after it has passed through receive and transmit framing
	section.
port	An access point for data entry or exit.
POWER connector	The power input connector on the CSU.
power-on self-test	A test that checks most hardware components when power is applied to the device or a
	reset is initiated.
PPP	Point-to-Point Protocol. A protocol for packet transmission over serial links, specified by
	Internet RFC 1661.
PRM	Performance Report Messages. Messages indicating the current state of a T1 line as
	specified by ANSI-T1-403.
protocol	A set of rules that determines the behavior of devices in achieving and maintaining
	communication.
PSTN	Public Switched Telephone Network. A network shared among many users who can use
	telephones to establish connections between two points. Also known as dial network.
pulse density	A measure of the number of ones (marks, pulses) in relation to the total number of bits
	transmitted.
QRSS	Quasi-Random Signal Source. A test pattern simulating a random pattern of digital ones
	and zeros used to simulate normal transmission.
RAM	Random-Access Memory. Read/write memory that is volatile and loses its contents when
	power is removed.

GL-6 August 2000 3162-A2-GB20-40