Sierra Wireless DART 200 CDPD Modem manual Circuit-switched as the EID does for Cdpd

DART 200 CDPD Modem User’s Guide Glossary

DTE

DTR

Data Terminal Equipment

The official carrier name for the device (PC, MDT, RTU) attached to the modem (DCE).

Data Terminal Ready

EIA

EID

One of the RS-232 signal lines. Used to signal the modem (DCE) that the attached device (DTE) is ready to communicate (powered on). Can also be used by the modem to escape from data mode to command mode.

Electronic Industries Association

A standards setting body.

Electronic Identifier

ESH

ESN

This is a unique, 48 bit number permanently installed in the modem.This is used by the MDIS to identify the modem.

End System Hello

The M-ES initiated final step in the registration process, it contains the M-ES authentication credentials as well as additional optional parameters.

Electronic Serial Number

	For CSC only. The ESN serves the same basic purpose in
	circuit-switched as the EID does for CDPD.
F-ES	Fixed End System
	This refers to the host computer as a component in the
	CDPD network.
FEC	Forward Error Correction

FTP

GMID

Used by MAC layer protocol to correct for airlink data errors. Implementation uses Reed-Soloman algorithm that divides the 378-bit airlink block into 63, 6-bit symbols and can correct a block with errors in up to seven symbols.

File Transfer Protocol

A TCP/IP based file transfer protocol.

(Multicast) Group Member Identifier

A unique ID for a specific multicast group to which multiple modems can belong. A modem can be a member of several multicast groups. Used by the MDIS in combination with the multicast NSAP to facilitate routing of multicast messages.

GMSK	Gaussian Minimum Shift Keying modulation
	The CDPD modulation scheme.

PN1197-00 Revision 1.0 Glossary-3