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Chapter 1 – Product Description and Specifications
Front Panel
The front panel is designed with LEDs that display modem activity. The LEDs display modem activity, such as transmit and
receive data, carrier detection, link status, terminal ready indicating connection to the pc, and the power indicator. The SIM door
on the right side of the modem provides access to the SIM card holder for those configurations.
LEDs
MTCBA-E1/-U, MTCBA-G2/-U
LED Indicators
MTCBA-C1/-U
TD
RD
CD
TR
LS
Transmit Data: Lit when modem is transmitting data.
Receive Data: Lit when modem is receiving data.
Carrier Detect: Lit when data connection has been established.
Terminal Ready: Lit when modem is transmitting data.
Link Status Dependent on Model
-E1 version* (AT^SSYNC=1)
Permanently off. ME is in one of the
following modes: Power Down mode,
Airplane mode Non-Cyclic Sleep mode
with no temporary wake-up event in
progress.
600 ms on/600 ms off
Limited Network Service: No SIM card
inserted or no PIN entered, or network
search in progress or ongoing user
authentication, or network login in
progress .
75 ms on/3 sec off
Idle mode: The mobile is registered to the
GSM network (monitoring control
channels and user interactions). No call
is in progress.
75 ms on/ 75 ms off/75 ms on/3 sec off
One or more GPRS contexts activated.
500 ms on/ 25 ms off
Packet switched data transfer in
progress.
Permanently on
CSD call – Connected to remote party.
-G2 version
Continuous “on” state
indicates that the wireless
modem is not registered on the
network.
Flashing states:
200 ms on / 2 sec off
Indicates registration on
network.
200 ms on / 600 ms off
Indicates it is registered on a
network and communication is
in progress.
Off state. Modem is off (not
ready) or in download mode.
-C1 version
Continuous “on” state
indicates that the
wireless modem is not
registered on the
network.
Flashing states:
200 ms on / 2 sec off
Indicates registration on
network.
200 ms on / 600 ms off
Indicates it is registered
on a network and
communication is in
progress.
Off state. Modem is off
(not ready) or in
download mode.
PWR
Power: Indicates presence of DC power when lit.
Note: The Link Status (LS) LED requires an AT^SSYNC=1 command on power up or Reset in order the LED to perform as
in the above table. For other EDGE AT commands, refer to the EDGE (E1) AT Command Reference Guide on your CD.
Package Contents
Note: Your wireless provider will supply the SIM card (not needed for –C1 versions).
Unbundled Package
with No Accessories
Bundled Package
With Accessories
1 modem
1 modem
1 antenna
1 MultiModem CD
1 MultiModem CD
1 RS232 or USB cable
1 power supply with serial versions
8
Note: You must supply mounting screws, AC or DC power
supply, and an antenna.
Note: You must supply mounting screws.
Multi-Tech Systems, Inc. MultiModem Cell User Guide
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