Appendix A
Hayes Commands
Page
35
©
February 2005
frequency is 60 Hz, the AM broadcast radio frequency band is 535—1605
kHz, the FM broadcast radio frequency band is 88—108 MHz, and wireless
802.11b LANs operate at 2.4 GHz.
IEEE
Institute of Electrical and Electronics Engineers, New York, www.ieee.org.
A membership organization that includes engineers, scientists and students
in electronics and allied fields. It has more than 300,000 members and is
involved with setting standards for computers and communications.
Infrastructure
mode
A client setting providing connectivity to an AP. As compared to Ad-Hoc
mode, whereby PCs communicate directly with each other, clients set in
Infrastructure Mode all pass data through a central AP. The AP not only
mediates wireless network traffic in the immediate neighborhood, but also
provides communication with the wired network. See Ad-Hoc and AP.
I/O
The term used to describe any operation, program or device that transfers
data to or from a computer.
Internet
appliance
A computer that is intended primarily for Internet access, is simple to set up
and usually does not support installation of third-party software. These
computers generally offer customized web browsing, touch-screen
navigation, e-mail services, entertainment and personal information
management applications.
IP
A set of rules used to send and receive messages at the Internet address
level.
IP
(Internet
Protocol)
telephony
Technology that supports voice, data and video transmission via IP-based
LANs, WANs, and the Internet. This includes VoIP (Voice over IP).
IP address
A 32-bit number that identifies each sender or receiver of information that
is sent across the Internet. An IP address has two parts: an identifier of a
particular network on the Internet and an identifier of the particular device
(which can be a server or a workstation) within that network.
IPX-SPX
IPX, short for Internetwork Packet Exchange, a networking protocol used
by the Novell NetWare operating systems. Like UDP/IP, IPX is a datagram
protocol used for connectionless communications. Higher-level protocols,
such as SPX and NCP, are used for additional error recovery services.
Sequenced Packet Exchange, SPX, a transport layer protocol (layer 4 of the
OSI Model) used in Novell Netware networks. The SPX layer sits on top of
the IPX layer (layer 3) and provides connection-oriented services between
two nodes on the network. SPX is used primarily by client/server
applications. Whereas the IPX protocol is similar to IP, SPX is similar to