There are DTU Modem and Normal Modem, what are the differences for them? Here I just use a simple diagram to show you details.

1. The difference between DTU IP Modem and Normal Modem
There are DTU Modem and Normal Modem, what are the differences for them?
Here I just use a simple diagram to show you details.
Item GPRS DTU IP Modem GPRS Normal Modem
TCP/IP, PPP Yes Yes
Interface RS232/RS485 RS-232
Bandwidth 20~60Kbit/s 20~60Kbit/s
Coverage Same as GSM network Same as GSM network
Transparent Data Yes No
VDPN Yes Yes
Point to Point Yes Depends network
Point to Multipoint Yes No
Center to
Multipoint
Yes No
Dynamite IP
Address Mapping
Yes No
Multi-protocol Yes No
Dialup Auto-dialup
Need back platform’s dialup
script
Applications
Utilities, traffic control, finance
and industry supervision,
SCADA, others
Mobile Internet access for PC,
others
DTU: Data Transmission Unit. Called as IP Modem, Serial to Cellular Gateway
modem also.
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