Motorola SURFBOARD SVG2500 - Manual (Page 167)

17 GLOSSARY
152
TERM DEFINITION
cable plant. Built on DOCSIS 1.1, PacketCable networks use IP
technology as the basis for a highly-capable multimedia
architecture.
pass-through A pass-through client on the SVG2500 LAN obtains its public IP
address from the Internet Service provider’s DHCP server.
PAT Port Address Translation
PCI Peripheral Component Interconnect
PCMCIA The Personal Computer Memory Card International Association
sets international standards for connecting peripherals to
portable computers. Laptop computers typically have a PCMCIA
slot that can hold one or two PC Cards to provide features such
as Ethernet connectivity.
PDA personal digital assistant
PDU A protocol data unit is a message containing operational
instructions used for SNMP. The basic SNMP V2 PDU types are
get-request, get-next-request, get-bulk-request, response, set-
request, inform-request, and trap.
periodic
ranging Ranging that is performed on an on-going basis after initial
ranging has taken place.
physical layer Layer 1 in the OSI architecture. It provides services to transmit
bits or groups of bits over a transmission link between open
systems. It entails the electrical, mechanical, and handshaking
procedures.
piggybacking A process that occurs when a cable modem simultaneously
transmits data and requests additional bandwidth.
PING A network utility that tests host reachability by sending a small
packet to the host and waiting for a reply. If you PING a
computer IP address and receive a reply, you know the computer
is reachable over the network. It also stands for
Packet InterNet Groper.
PMD The physical media-dependent sublayer of the physical layer
which transmits bits or groups of bits over particular types of
transmission links between open systems. It entails the
electrical, mechanical, and handshaking procedures.
point-to-point Physical connection made from one point to another.
POTS The “plain old telephone service” offered through the PSTN;
basic analog telephone service. POTS uses the lowest 4 kHz of
bandwidth on twisted pair wiring.
port On a computer or other electronic device, a port is a socket or
plug used to physically connect it to the network or to other