GE MDS iNET 900, Справочное руководство

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4 iNET Series Reference Manual 05-2806A01, Rev. J
correctly. See “ INSTALLATION PLANNING” on Page 129 for guid-
ance on choosing suitable installation sites and antennas.
For basic services, simply connect an antenna, connect your Ethernet
LAN to the transceiver’s
LAN
port, apply primary power, set a few oper-
ating parameters, and you are done. No license is required for operation
in the U.S.A., Canada, and many other countries. Check requirements
for your region before placing the transceiver in service.
Secure Operation
Data network security is a vital issue in today's wireless world. MDS
iNET Series radios provide multiple tools to help you build a network
that minimizes the risk of eavesdropping and unauthorized access. Some
are inherent in the radio's operation, such as the use of 900 MHz
spread-spectrum transmissions; others include data encryption, en-
abling/disabling remote access channels, and password protection.
Remember, security is not a one-step process that can simply be turned
on and forgotten. It must be practiced and enforced at multiple levels,
24 hours-a-day and 7 days-a-week. See
“ CYBER SECURITY” on
Page 15 for more information about the transceiver’s security tools.
Robust Radio
Operation
The transceiver is designed for frequency-hopping spread-spectrum
operation in the license-free 900 MHz Industrial, Scientific, and Med-
ical (ISM) band. It can provide reliable communications at distances up
to 25 miles (40 km) over favorable terrain, even in the presence of weak
signals or interference. Frequency hopping allows the transceiver to
avoid interference from other transmitters in the same band, and pro-
vides frequency diversity for more reliable transmission. The
over-the-air MAC increases reliability by adding retries to failed mes-
sages.
The iNET-II transceiver, which is certified to operate under DTS rules
(hopping not required), also hops in order to achieve the same benefits
that are realized with the iNET transceiver which is certified under
FHSS rules.
Flexible Services
Users with a mixture of equipment having Ethernet and serial data inter-
faces can choose to use one or two of the user-configurable serial ports
through the use of a Remote Dual Gateway. This flexibility allows the
transceiver to provide services in data networks that are being migrated
from legacy serial/EIA-232-based hardware to the faster and more
easily interfaced Ethernet world.
Flexible
Management
Configuration, commissioning, troubleshooting and other maintenance
activities can be done locally or remotely. Four different modes of
access are available: local RS-232 console, local or remote Internet Pro-
tocol (IP) access via Telnet or SSH, web browser (HTTP, HTTPS), and
SNMP (v1/v2/v3). The text-based interface (RS-232 console Telnet and
SSH) is implemented in the form of easy-to-follow menus, and the ter-
minal server configuration includes a wizard to help you set up the units
correctly.