Specifications

ISU AT Command Reference Phase I AT Commands
Iridium Proprietary Version 2.45
20 June 2011 18
5.8 En - Echo
Echo command characters.
0 Characters are not echoed to the DTE.
1 Characters are echoed to the DTE (default).
5.9 Fn - Line Modulation
Select line modulation standard.
No action, compatibility only.
Allowed values for n are 0, 1, 3, 4, 5, 6, 7, 8, 9 and 10.
5.10 Hn - Hangup (Initial implementation; revised in Phase III)
Control the hook switch. This command is used to clear a data call connection.
0 Place the ISU on hook.
5.11 In – Identification (Initial implemenation; revised in Phase VI)
Requests the ISU to display information about itself.
0 “2400” (traffic channel rate for IRIDIUM data/fax)
1 “0000” (ROM checksum which is not supported so zero is output)
2 “OK” (result of ROM checksum verification which is not supported so OK is always out-
put)
3 “XXXXXXXX” (Software revision level)
4 “IRIDIUM” (Product description)
5 “XXXX” (country code)
6 “XXXXXXXX” (Hardware specification)
5.12 Ln - Loudspeaker Volume
Set the loudspeaker volume according to the parameter supplied.
No action, compatibility only.
Allowed values for n are 0, 1, 2 and 3.
5.13 Mn - Speaker Control
Select when the speaker will be on or off. Note that serially connected products have no speaker.
No action, compatibility only.
Allowed values for n are 0, 1, 2 and 3.