Xylem H-2192 - Manual (Page 7)

1.4 Definitions and Acronyms
General Terms:
H-2191 Model number of the unit with the standard land line modem module installed.
H-2192 Model number of the unit with the cell modem module installed.
H-219X Model number used in this manual when a topic applies to both the H-2191 and
the H-2192.
Phone System Terms:
APN Access Point Name. Used by the provider to determine how to connect the
mobile device to the IP network.
CSD Circuit Switched Data.
Older technology for data transfer.
GPRS General Packet Radio Service.
This is a “packet oriented, mobile data service” available to users of the 2G
(GSM) cellular communication systems, as well as the newer 3G systems. In 2G
systems, GPRS provides data rates of 56-114 kbit/s
GSM Global System for Mobile Communication.
POTS Plain Old Telephone System. This is the same as the PSTN.
PSD Packet Switched Data.
Newer technology for data transfer.
PSTN Public Switched Telephone Network.
Radio Terms:
DL3400 this is the model number of the radio from ‘Data Radio’ that interfaces directly to
the H-219X.
PPT Push To Talk.
Normally a button on a radio manually pressed when the user desires to talk.
H-219X
Introduction 1-3