Hi there, we have purchased and sucsessfully installed a MultiTech MultiModem® GPRS MTCBA-G-U Series.
However during my research I found the following.
This is list of Modems that are supported out of the box by the Nimsoft SMS Gateway Probe:
Ericsson SH888
Falcom A1
Falcom A2
Nokia Card Phone 1.0
Nokia Cellular Data Suite
Nokia Communicator 9000
Nokia Communicator 9110
Nokia Data CardOption First
FoneSAGEM MC 850
Siemens M1
Siemens M20
Siemens SL10
UbiCom GSM Model 232
The above list is quite old but basically any GPRS enabled Modem that can be attached to the NMS server should work, the modem must appear as a COM: port to the server and must support following the Standard AT Short Message Command set.