Paradyne 8540 Margin, MCC Card, Multiplex, Packet, Peer Address, Ping, Pots Splitter, Proxy ARP

Glossary

margin	DSL margin is defined as the additional noise measured in db that would need to be added
	to (or if the margin is negative, subtracted from) the existing noise present on a given DSL
	loop to bring the Bit Error Rate (Ber) to IE-7 (10 7) . Unless the noise source is defined
	(such as 24 BRI disturbers or 24 DSL disturbers, it is assumed to be Noise Model A (white
	noise).
MCC Card	Management Communications Controller Card. The card in a HotWire DSLAM system or
	stack that is used primarily for monitoring and configuring the HotWire DSLAM.
MIB	Management Information Base. A collection of information (e.g., configuration, status, and
	statistical data) within an SNMP agent that forms a database of information about the
	agent which is accessible from the NMS manager. MIB II is the current standard.
Multiplex	Combine many low-speed data sources into a single, high speed serial data stream. The
	data is coded at transmission, and decoded at reception. Interleave or simultaneously
	transmit two or more messages on a single circuit. Some multiplexing techniques include
	Frequency Division Multiplexing (FDM), Time Division Multiplexing (TDM), and Statistical
	Multiplexing (Stat MUX).
NAP	Network Access Provider. The NAP provides a transit network service permitting
	connection of service subscribers to Network Service Providers (NSPs). The NAP is
	typically the network provider (e.g., a Regional Bell Operating Company, an Alternate
	Local Exchange Carrier) that has access to the copper twisted pairs over which the DSLs
	operate.
NMS	Network Management System. The system responsible for managing a portion of the
	network. An NMS communicates to a Simple Network Management Protocol (SNMP)
	agent via SNMP to obtain (get) or configure (set) specific parameters or variables within
	control of the SNMP agent (e.g., DCE Manager).
NSP	Network Service Provider. NSPs can be either public data network providers (i.e., Internet
	Service Providers) or private data network providers (i.e., corporate intranets) who provide
	network services based on the Internet Protocol (IP). In some cases, the NSP and the
	NAP can be a single network provider.
Packet	Used in this document to refer to a block of data sent across an IP switching network.
Peer Address	IP address used to indicate directly connected systems.
Ping	An IP-based application used to test reachability of destinations by sending an ICMP echo
	request and waiting for a reply. The ping program is supported from both the DSL and
	MCC cards.
POTS	Plain Old Telephone Service.
POTS Splitter	A device that filters out the DSL signal and allows the POTS frequencies to pass through.
	This device can be installed at the Central Office or Customer Premises.
PPP	Point-to-Point Protocol. A protocol for framing IP when sending across a serial line. It
	allows a computer to connect to the Internet using a standard dial-up telephone line and a
	high-speed modem.
Proxy ARP	Proxy Address Resolution Protocol (ARP). The technique in which one machine, usually a
	router, answers ARP requests intended for another by supplying its own physical address.
	By pretending to be another machine, the router accepts responsibility for forwarding
	packets. The purpose of proxy ARP is to allow a site to use a single IP network address
	with multiple physical networks.
RADIUS	See Authentication Server.
RADSL	Rate Adaptive Digital Subscriber Line. A transmission technology that supports both
	symmetric and asymmetric applications on a single twisted-pair telephone line and allows
	adaptive data rates.

8000-A2-GB20-20 November 1997 GL-3