This data service is proprietary to Verizon. The DMU option is a
customer account provisioning in the Verizon network and is a more
powerful subset of 1xRTT packet data.
1.5 Speeds
Data Rate From Your Computer To The Modem
The Land-Cellular CDM series data modems are capable of sending and receiving data at
high speeds. The modem has a default RS-232 speed of 57600bps. Your COM port must
be configured to operate at this rate in order to properly communicate with the modem.
The modem's COM port speed can be adjusted with the:
AT+IPR
command. Please refer
to the FAQ for more information on changing the COM port speed. The modem's COM
port speed is variable from 300bps to 115.2Kbps.
Data Rate From The Modem To The Cellular Network
CDMA data transmission provides faster and more reliable connections than analog
technology. You can expect to connect at 14.4Kbps minimum speed, but speeds may
very well be higher. The speed at which you are able to connect is contingent upon many
factors such as: your location, carrier, proximity to the base station and other factors.
CDMA 3G-1x systems support data rates of up to 153.6Kbps.
1.6 Status Indicators
There are a total of four LED's on the Land-Cellular Intelligent Modem: two green, one
amber and one red. The green LED next to the DC power jack is the
Power Indicator
LED
. This LED will illuminate when power is applied to the modem. The other three
LEDs are grouped on the opposite end of the modem, next to the SMA antenna
connectors. Listed below are the specifications of the LEDs and their corresponding
colors.
POWER (Green)
The green
Power
LED indicates correct power is applied to the DC power input
jack.
DCD (Amber)
The amber
Carrier Detect
LED illuminates to indicate a connection to a remote
system or service.
1XRTT (Red)
The red
1XRTT
LED will illuminate when 1XRTT coverage is detected or will
remain off when no 1XRTT coverage is available.
RSSI (Green)
Of the three radio link status indicators, the green LED is used to show
Received
Signal Strength
. There are three possible states that the RSSI LED can operate in,
based upon signal level:
· If the RSSI LED is powered off, this means that the RSSI is less than
-110dbm.
·When the RSSI level is between -110dbm and -90dbm, the LED will
flash about once a second.
