Nextel comm Modem IR1200 User Manual download pdf (Page 114)

iR1200 Modem

104 nextel.com

through. Circuit Switch was originally developed for the analog-based

telephone system in order to guarantee steady, consistent service for two people

engaged in a phone conversation.

Command Mode

The mode that accepts AT commands. Also known as Terminal Mode. When

your modem is in this mode, it is waiting to receive AT commands that you

type from your communication software.

Communication Software

A computer program designed to connect your computer to an external source,

such as another computer or a fax machine.

Configuration

The term configuration defines the hardware components that comprise a

subsystem and system. It is a set of conditions or parameters that define the

structure of an item such as the GPS processing and characteristics of the RS-

232 interface ports.

Data Services

One of the functions of your iDEN



modem. Data services uses both circuit-

switched and packet data transmissions.

DCD

Data Carrier Detect. An acceptable carrier signal received by the modem over

the modem line. Also known as Received Line Signal Indicator (RLSI).

DCE

Data Communication Equipment. The equipment that establishes, maintains,

and terminates a connection. It converts data into units of sound and vice versa

for communication over telemodem or cellular networks.

Default

A factory preset choice that, under normal circumstances, works best for your

system. You can either accept the default or change it.

Differential Capable

A term used to describe a GPS receiver capable of receiving and applying

differential GPS corrections.

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Nextel comm Modem IR1200 User Manual Page 114