DESCRIPTION
10
2.7. Description of individual components of the router
2.7.1.
GSM/GPRS/EDGE module
The MC75i OEM module is used for GSM network wireless communication. It is
integrated into the printed circuit board. The slide-out SIM card reader is accessible from
the front panel. The FME antenna connector is accessible from the back panel.
The router is equipped with a USB 2.0 Full Speed interface which is brought to the
USB-B connector marked USB. The MC75i module is connected to the control computer via
the RS-232 high-speed serial interface.
GSM/GPRS/EDGE module
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Communicates in four GSM bands (850MHz, 900MHz, 1800MHz, and 1900MHz).
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In the GPRS mode it is able to transmit in three „Time Slot“ and receive in two (GPRS
multi-slot class 10 – the maximum bit rate of reception is 42.8 kb/s) or transmit in one
„Time Slot“ and receive in four (GPRS multi-slot class 12 – the maximum bit rate
of reception is 85.6 kb/s).
•
In the EDGE mode it is able to transmit in three „Time Slot“ and receive in two (EDGE
multi-slot class 10 – the maximum bit rate of reception is 118.4 kb/s) or transmit in one
„Time Slot“ and receive in four (GPRS multi-slot class 12 – the maximum bit rate
of reception is 236.8 kb/s).
•
Supports coding schemes CS1 to CS4 and MCS1 to MCS9.
Beware! The transmitting and receiving in timeslots depends on the operator networks
possibilities.
2.7.2.
Control microcomputer
The core of the router is a 32-bit microprocessor with 16 MB RAM, 4 MB FLASH
EEPROM, serial interface RS232 and an Ethernet interface 10/100 Mbit/s. The microcomputer
is connected to the MC75i OEM module through the serial interface and controls
the communication via GSM/GPRS. Towards to the user it is connected on the Ethernet
interface.
The software is built on the uClinux operating system.
The router supports services such as DHCP, NAT, GRE, IPSec tunnels, etc.
The router settings are saved in the FLASH EEPROM memory. All configuration
of the modem can be done through a web interface (HTTP) which is security password
controlled.
Actual firmware version: 2.1.1 (22.4.2011)
LUCOM GmbH * Ansbacher Str. 2a * 90513 Zirndorf * Tel. 09127/59 460-10 * Fax. 09127/59 460-20 * www.lucom.de