What is a cellular IP gateway? How does it compare with a cellular modem? In fact, why would your applications need a cellular IP gateway solution anyway? Cellular IP gateways are designed for devices using built-in legacy operating systems that do not support Ethernet or TCP/IP networks. In other words, cellular IP gateways offer a method of transmitting data over TCP/IP networks. If your applications need to access remote devices from a central location via the Internet or a cellular network, then using a cellular IP gateway will allow you to integrate TCP/IP architecture and wireless cellular technology.

Cellular IP Gateways vs. Cellular Modems
The difference between using a cellular IP gateway and a cellular modem is how host PCs connect to the device. With a cellular IP gateway, the host PC can connect directly to the device using TCP/IP. With a cellular modem, the host PC requires a separate modem to establish the connection.
Features Cellular IP Gateway Cellular Modem
Wireless interface GSM/GPRS/SMS GSM/GPRS/CSD/SMS
Dialing capability Yes No
TCP/IP stack Yes No
Local memory 8 MB RAM, 4 MB Flash No
PSTN modem or cellular
modem at both ends
Not required Required (except GPRS)
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