Moxa NM-GPRS Leaflet

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Serial-to-Ethernet Solutions

CSD (Circuit Switched Data) provides direct modem access to remote 
devices, and system extensions can be used without installing cables 
and data lines. CSD transmits data at 9.6 to 14.4 Kbps to both GSM 
networks and the PSTN switching subsystem by calling direct. CSD 
overcomes the limitations of hard wiring and inaccessible terrain for 
easier, more flexible data collection and monitoring of applications that 
use NPort® device servers.

A GPRS packet-switched system can be viewed as a special IP 
network that offers IP connectivity to IP terminals. Devices without 
PPP or TCP/IP capability can be easily connected to the IP network 
and the Internet through GPRS by using the NPort® GSM/GPRS 
module.

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Most countries in the world use the GSM-900 and GSM-1800 cellular frequencies. 
However, in the United States, Canada, and other parts of the Americas, GSM-850 
and GSM-1900 are used. With the NM-GPRS/GSM quad-band cellular module, 
you don’t need to worry about selecting different products for different parts of the 
world. The NM-GPRS/GSM module’s GSM/GPRS band is configured at 900/1800 
MHz by default, but can be easily reconfigured to 850/1900 MHz.

NPort® products come with Real COM drivers for Windows operating 
systems and Real TTY drivers for Linux operating systems used in a 
GSM/GPRS network environment. In Real COM mode, the bundled 
drivers are able to establish a transparent connection between a host 

and a serial device by mapping the serial port on the NPort® to a local 
COM/TTY port on the host computer. One of the major conveniences 
of using Real COM mode is that it allows you to use software that was 
written for pure serial communication applications.

RS-232/422/485