Sierra Wireless DART 200 CDPD Modem - Manual (Page 185)

DART 200 CDPD Modem User’s Guide Glossary
PN1197-00 Revision 1.0 Glossary-5
M-ES Mobile End System
Refers to the DART as a component in the CDPD
network
MDBS Mobile Data Base Station
Cellular tower serving a specific geographical area.
Communicates by radio with the DART and by landline,
microwave, etc. with the MDIS. See also, cell.
MDIS Mobile Data Intermediate Station
Computer device that serves as the control point for
CDPD in a specific area. Accepts information from
MDBS and processes and sends the information by
routers to the appropriate F-ES.
MDLP Mobile Data Link Protocol
The link layer protocol used in CDPD. Operates between
the SNDCP and MAC layers. Provides framing, data link
connection, sequence control, and flow control functions.
MDT Mobile Data Terminal
An alternate name for a mobile MAS.
MNRP Mobile Network Registration Protocol
MTSO Mobile Telephone Switching Office
Some carriers locate their MDIS at the MTSO
(pronounced mitso).
NEI Network Entity Identifier
The official name for the IP Address. A 32-bit identifier
normally expressed in dotted decimal (162.147.11.49).
The NEI is a component of the NSAP.
NEMA National Electrical Manufacturer’s Association
A standards setting body.
NSAP Network Service Access Point
The definition of the point where the service user and
service provider systems meet. The NEI is accessed
through the NSAP by end-users.
OPR Abbreviation for the Operate light on the DART
Indicates power on status (slow blink), and relative signal
strength (faster blink to solid on).
PAD Packet Assembler - Disassembler
PIN Personal Identification Number
Part of the optional CDPD security system.