ReceiveIncomingSMS (FromNumber, Msg)
Initiate sending of SMS to be received by the device.
FromNumber - The phone number that the message will appear to arrive from (5+ character).
Msg - The message text (5+ character).
To use telephony features (receiving calls and SMS), the Cloud Admin must have configured and activated a telephony account. This is done in the Device Policies -> Telephony web UI page.