User manual

5.2 The modem always returns «Error» when trying to issue a communication
A) Issue AT+CMEE=1 to have extended error cause and retry
For all other codes, and/or details, see AT commands manual.
B) Additional hints
❏ Is the modem registered on the network?
Does the AT-Command AT + CREG? answers 0,1 (registered) or 0,5 (registered roaming)?
➫ If not, check that the received signal is strong enough to synchronize on the Network (use AT+CSQ).
TROUBLESHOOTING
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GUIDE 19/04/99, 9:2216