Comtech EF Data SDM-300L3 Installation And Operation Manual page 356

SDM-300L3 Satellite Modem
Remote Control Operation
A.2.4 End Character
Each message is ended with a single character which signals the end of the message:
"cr"
"]"
Carriage return character for commands
End bracket for responses
A–4
Revision 1
MN/SDM300L3.IOM