Quectel WCDMA UG FTP Series At Command Manual page 44

5
Summary of FTP Protocol Error Codes
The protocol error code <protocol error> indicates an error replied from FTP server. Please refer to
RFC959 (File Transfer Protocol).The details about <protocol error> are described in the following table.
Table 2: Summary of FTP Protocol Error Codes
<protocol error>
421
425
426
450
451
452
500
501
502
503
504
530
532
550
551
552
553
WCDMA_UGxx_FTP_AT_Commands_Manual
Meaning
Service not available, closing control connection
Open data connection fails
Connection closed; transfer aborted
Requested file action not taken
Requested action aborted: local error in processing
Requested action not taken: insufficient system storage
Syntax error, command unrecognized
Syntax error in parameters or arguments
Command not implemented
Bad sequence of commands
Command parameter not implemented
Not logged in
Need account for storing files
Requested action not taken. File unavailable
Requested action aborted: page type unknown
Requested file action aborted. Exceeded storage allocation
Requested action not taken. File name not allowed
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