How can I send an SMS to an Iridium or Telstra/Iridium service - SMS-MT (Mobile Terminated)?

SMS-MT messages can be sent to an Iridium phone/Beam docking station/terminal in one of 5 ways:

By sending an SMS-MO message from another Iridium phone.  Current limitation is 160 characters.

By sending an SMS-MO message from a cellular phone ( if available ).

By sending an e-mail to This email address is being protected from spambots. You need JavaScript enabled to view it. where xxxxxxxxxxxx is the 12-digit Iridium phone number. The subject line is ignored.  “Plain Text” format is recommend for the e-mail message. Not available for Telstra 01471xxxxx services

By using the “Send a Satellite Message” feature at 
Not available for 01471xxxxx services

By sending an SMS-MO message from another Beam Iridium device, by using the Beam Management System, Software>Messages tab.