Front Panel; Leds; Back Panel - Multitech MultiModem iCell MTCMR-E1 User Manual

Front Panel

The front panel is designed with two groups of LEDs that display modem activity and signal strength. The first group of 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 three Signal LEDs display the signal strength level of the wireless connection. The SIM
door on the right side of the modem provides access to the SIM card holder for those configurations.
MTCMR-E1, -G2

LEDs

TD Transmit Data: Lit when modem is transmitting data. Not valid while in USB mode.
RD Receive Data: Lit when modem is receiving data. Not valid while in USB mode.
CD Carrier Detect: Lit when data connection has been established. Not valid while in USB mode.
LS Link Status LED is dependant on the model:
-E1 version
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.
TR Terminal Ready: Commonly referred to as "Data Terminal Ready", this is a readiness signal from the PC.
PWR / Power: Indicates presence of DC power when lit.
GPS
GPS: If a valid GPS signal has been received, the PWR/GPS LED will blink at 1 second ON, and 0.5 second OFF.
If GPS signal is invalid, the PWR/GPS LED will be on solid.
Signal
Indicates the wireless signal strength. In order to verify signal strength, you must use a terminal application such as
HyperTerminal. Refer to Examples of Useful AT Commands in Chapter 3 of this guide.

Back Panel

Your back panel will differ only if you have purchased the optional GP model that has an additional connector for a GPS
antenna. The GPS antenna connector is located between the power connector and the RS-232 connector. The far right
connector is for the wireless antenna.
MTCMR-xx
Multi-Tech Systems, Inc. MultiModem iCell User Guide
LED Indicators
-G2 version
Continuous "on" state indicates
that the wireless modem is not
registered on the network.
Flashing state indicates registration
on network.
Off state. Modem is off (not ready)
or in download mode.
MTCMR-xx-GP (GPS antenna)
MTCMR-C1
-C1 version:
The LS light is not active
on the CDMA builds.
Chapter 1
7