Comtech EF Data SDM-650B Installation And Operation Manual page 340

Trojan Interface
G.6.4.5.17 Equipment Type
This command returns the equipment model number and M&C firmware version number.
Command:
Response:
G–44
<add/ET_"cr"
>add/ET_SDM650S_x.xxx"cr""lf"]
Where: x.xxx = M&C firmware version.
SDM-650B Satellite Modem
Rev. 5