Paradyne 317x E1 manual Ppp

Glossary

power-up 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 link layer protocol used by SNMP.
PRBS	Psuedo-Random Bit Sequence. A test pattern containing any possible combination
	of digital ones and zeros for a given string length.
primary clock	The primary timing source used to synchronize all of the E1 and data port interfaces
	on the E1 DSU/CSU.
PRM	Performance Report Message. A message indicating performance data such as
	errored seconds, unavailable seconds, etc.
protocol	A set of rules that determines the behavior of functional units in achieving
	communication.
Ptrns branch	Test Patterns branch of the E1 DSU/CSU menu tree.
pulse density	A measure of the number of ªonesº (marks, pulses) in relation to the total number
	of bits transmitted.
QRSS Test	Quasi-Random Signal Test. A test pattern simulating a random pattern of digital
	ones and zeros used to simulate normal transmission.
RAI	Remote Alarm Indication. A remote alarm on an E1 line.
RAM	Random-access memory. Read/write memory that is volatile and loses its contents
	when power is removed.
register	A part of the device's memory that holds stored values.
Rel branch	Release branch of the E1 DSU/CSU menu tree.
reset	A reinitialization of the E1 DSU/CSU 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. A protocol used to add routes in the Internet.
RJ48C	An 8-position modular connector.
RLB	Repeater Loopback. Loops the signal being sent to the network back to the DTE
	Drop/Insert and data ports after it has passed through the framing circuitry of the E1
	DSU/CSU.

Rlpbk branch router RS-232 RS-232-like MIB

Remote Loopback branch of the E1 DSU/CSU menu tree.

A device that connects LAN segments.

An EIA standard for a low-speed, 25-position, DCE/DTE interface.

Defines objects for managing RS-232-type interfaces (e.g., RS-422, RS-423, etc.) and supports synchronous data ports and management communication ports on the E1 DSU/CSU.

RS-449	An EIA standard for a general-purpose, 37-position, DCE/DTE interface.
RTS	Request-to-Send. V.24 circuit 105.
RX	Receive. To obtain signals that have been transmitted.
RXC	Receive Clock. V.24 circuit 115.
RXD	Receive Data. V.24 circuit 104.
secondary clock	The secondary clock source used to provide timing to the E1 DSU/CSU when the
	primary clock fails.

3170-A2-GB20-20 December 1996 Glossary-7