Specifications

SIM900 AT Commands Set
SIM900_ATC_V1.01 190 23.06.2010
313 SIM failure
314 SIM busy
315 SIM wrong
316 SIM PUK required
317 SIM PIN2 required
318 SIM PUK2 required
320 Memory failure
321 Invalid memory index
322 Memory full
323 Invalid parameter
324 Invalid input format
330 SMSC address unknown
331 No network
332 Network timeout
340 No CNMA ack
500 Unknown
512 SIM not ready
513 Unread records on SIM
514 CB error unknown
515 PS busy
517 SM not ready
528 Invalid (non-hex) chars inPDU
529 Incorrect PDU length
530 Invalid MTI
531 Invalid (non-hex) chars in address
532 Invalid address (no digits read)
533 Incorrect PDU length (UDL)
534 Incorrect SCA length
536 Invalid First Octet (should be 2 or 34)
537 Invalid Command type
538 SRR bit not set
539 SRR bit set
540 Invalid User Data Header IE
753 CRSM missing parameter
754 CRSM invalid command
755 CRSM invalid file ID
756 CRSM missing P parameter
757 CRSM invalid P parameter