Novatel Minstrel S, Руководство пользователя

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Glossary 93
Minstrel S
TM
User Guide Version 1
GU-90023058
Glossary A-H
AT commands
AT commands are commands used to control a modem. Wireless IP modems have their
own set of AT command. This set of commands contains some of the commands used by
wireline modems but also includes commands specific to Wireless IP modems.
auto power off
Auto power off is a feature of the Minstrel S that, when enabled, will cause the modem to
de-register and power off whenever the active PPP session is closed.
CDPD
CDPD, or Cellular Digital Packet Data, is a Wireless IP technology developed for use on
cellular phone frequencies. CDPD uses unused cellular channels to transmit data in pack-
ets.
To send and receive data across the Internet, the Minstrel S must first register to the
CDPD network.
channel
The range of Wireless IP frequencies used to transmit and receive data is broken up into
channels, which act as individual paths for communication. Each of these channels is
assigned a number.
de-registration
De-registration involves disconnecting and closing the communication path being used on
the CDPD network. When the modem is de-registered, it can no longer send or receive
data across the network.
Equipment Identifier (EID)
Every wireless IP modem manufactured has a unique serial number associated with it,
which is referred to as the Equipment Identifier or EID. Each EID consists of six sets of
two hexadecimal numbers that are often separated by a period (“.”), as in the sample EID
00.60.D6.04.BC.FE.
flash memory
Flash memory is a type of memory that is easily updatable and retains its contents when
power is removed. The Minstrel S has its own flash memory which holds the Minstrel’s
software and has room to hold other applications and data. The File Mover utility can be
used to move or copy items to the Minstrel’s flash. The Minstrel S Updater utility writes
updates to the Minstrel software to the flash.
hot list
The Minstrel S keeps a list of most recently used channels called the hot list. When the
Minstrel S attempts to register, it will use this list as dictated by the Hot List Operation
field in the Config screen.