3G CDMA NIM/Cellular Interface
3G CDMA NIM Product Overview
61700801G1-29.1H
Copyright © 2010 ADTRAN, Inc.
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3G CDMA NIM Product Overview
The 3G CDMA NIM is an alternative method for providing primary and backup wide area network (WAN)
connections, allowing small and large businesses more cost-effective methods for staying connected.
Whether large businesses need backup connections, or small businesses need immediate high-speed
connections without the cost and delay of waiting for installation of an integrated services digital network
(ISDN) line, the 3G CDMA NIM provides the necessary access at a fraction of the cost, when paired with
a wireless data plan service provider.
The 3G CDMA NIM provides access to remote sites, such as remote kiosks, temporary sites, or remote
office branches, through cellular connections at speeds approaching those of a T1 network. The 3G CDMA
NIM also provides an alternative to ISDN, cable, and digital subscriber line (DSL) backup solutions.
Physical Description
The 3G CDMA NIM uses two dipole antennas (one primary and one diversity) to connect to the cellular
network. The NIM also includes four LEDs, which signify the type of connection being used, and the
signal strength. Figure 1 depicts the rear panel of the 3G CDMA NIM.
Figure 1. 3G CDMA NIM Rear Panel
The 3G NIM’s LEDs reveal information regarding signal strength, power status, transmission status, and
service availability. Table 1 describes the LED, its color, and its indication.
Table 1. 3G CDMA NIM LED Descriptions
LED Label
LED Color
Indication
WWAN
Off
3G modem is not powered.
Green (solid)
3G modem is powered, associated, and authenticated, but
not transmitting or receiving.
Green (slow flash)
3G modem is powered and searching, but not associated
or authenticated.
Green (intermittent flash) 3G modem activity proportional to transmitting/receiving
speed (3 Hz minimum rate, 20 Hz maximum rate).
RSSI
(Received
Signal Strength
Indication)
Off
No service or no signal detected.
Red (solid)
Low signal strength.
Amber (solid)
Medium signal strength.
Green (solid)
High signal strength.
1xRTT
Off
No 1xRTT service is available.
Green (solid)
1xRTT service is available.
EVDO
Off
No 1xEVDO service is available.
Green (solid)
1xEVDO service is available.
ANT1
ANT2
3G NIM (CDMA)
WWAN
RSSI
1xRTT
EVDO