Paradyne 7112 Loopback, Manager Snmp, Multiplexing, Network interface, Node, Object Snmp, Reset

Glossary

LOF	Loss of Frame. The inability to maintain frame synchronization.
LOFC	Loss of Frame Count. A count of the number of LOFs declared.
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.
LOS	Loss Of Signal. The T1 line condition where there are no pulses.
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.
network interface	The T1 network interface connector on the rear panel of the DSU/CSU.
NMS	Network Management System. A computer system used for monitoring and controlling
	network devices.
node	A connection or switching point on the network.
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.
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.
QRSS	Quasi-Random Signal Source. Test pattern that approximates live data that can be
	monitored for logic errors (on the network and the data port).
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.
RIP	Routing Information Protocol. Specifies the routing protocol used between DSUs.
RLSD	Receive Line Signal Detect. See CD.
router	A device that makes decisions about the paths network traffic should take and forwards
	that traffic to its destination. A router helps achieve interoperability and connectivity
	between different vendor's equipment, regardless of protocols used.

GL-4 March 1998 7112-A2-GB20-20