17 GLOSSARY

 

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 that is performed on an on-going basis after initial

ranging

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

 

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Motorola SVG2500 manual Pat, Pci, Pcmcia, Pda, Pdu, Ping, Pmd, Pots