Synaccess Networks NP-0801DTM - Manual (Page 327)

CME ERROR LIST
327 HSPA+ AT Commands Reference Guide
570 QOS not accepted.
571 NSAPI already used.
572 LLC or SNDCP failure.
573 Network reject.
Custom SIM Lock related errors
586 MCL personalization PIN required.
FTP related errors
600 Generic undocumented error.
601 Wrong state.
602 Cannot activate.
603 Cannot resolve name.
604 Cannot allocate control socket.
605 Cannot connect control socket.
606 Bad or no response from server.
607 Not connected.
608 Already connected.
609 Context down.
610 No photo available.
611 Cannot send photo.
612 Resource used by other instance.