Paradyne 7610 Latching loopback, Link layer protocol, Loopback, Manager Snmp, Multiplexing, Node

Glossary

LAN	Local Area Network. A network designed to connect devices over short distances, like
	within a building.
latching loopback	A latching loopback can only be initiated or terminated by the 64 kbps clear channel
	network service provider.
LED	Light Emitting Diode. A status indicator that responds to the presence of a certain
	conditions.
link layer protocol	The protocol that regulates the communication between two network nodes.
LL	Local Loopback. An EIA-lead standard for V.24 circuit CT 141; an input signal
	(DTE-to-DCE).
loopback	Used to test various portions of a data link in order to isolate an equipment or data line
	problem. A diagnostic procedure that sends a test message back to its origination point.
LSD	Line Signal Detect. An EIA-lead standard for V.24 circuit CT 109; an output signal
	(DCE-to-DTE).
manager (SNMP)	The device that queries agents for management information, or receives unsolicited SNMP
	trap messages indicating the occurrence of specific events.
MIB	Management Information Base. The set of variables a device running SNMP maintains.
	Standard, minimal MIBs have been defined, and vendors often have private enterprise
	MIBs. In theory, any SNMP manager can talk to any SNMP agent with a properly defined
	MIB. MIB-II refers to an extended management database that contains variables not
	defined in the original MIB I.
multiplexing	A method for interleaving several access channels onto a single circuit for transmission
	over the network.
NMS	Network Management System. A computer system used for monitoring and controlling
	network devices.
node	A connection or switching point on the network.
non-latching	A non-latching loopback can only be initiated or terminated by the 56 kbps network service
loopback	provider.
NS	No Signal. A network-reported condition.
object (SNMP)	A specific item within the Management Information Base (MIB).
OOF	Out Of Frame. An error condition in which frame synchronization bits are in error. A
	network-reported condition.
OOS	Out of Service. A digital network trouble signal.
PAD	Packet Assembler/Diassembler.
point-to-point circuit	A data network circuit with one control and one tributary device.
PPP	Point-to-Point Protocol. A link-layer protocol used by SNMP.
protocol	The rules that govern how devices exchange information on a network. It covers timing,
	format, error control, and flow control during data transmission.
PSTN	Public Switched Telephone Network. A network shared among many users who can use
	telephones to establish connections between two points.
reset	A reinitialization of the device that occurs at power-up or in response to a reset command.
RFC	Request for Comments. The set of documents that describes the standard specifications
	for the TCP/IP protocol suite.

7610-A2-GB20-10 November 1997 GL-3