I have V130 with an Enfora GSM 1308 modem.
Appliance is a remote controlled air sampler
The measurement must start by SMS - it works,
Applliace send back a SMS: Measurement started - it works as well.
End of the measuring time (10 minits) should send an SMS : measuring finished - but in this case often comes in an error: Send fail bitmap
Sometimes the 3 steps cycle works properly, sometimes the third step failed.
What du you advise?