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Chapter 4 – FTP Services

Multi-Tech Systems, Inc. AT Commands for Wireless Modems with IP Connectivity (S000333B) 25

Chapter 4 – FTP Services

Parameter Definitions

#FTPPORT Enter FTP Server Port

Definition: To reach the FTP server, the TCP/IP stack software must know the control port of the FTP server used

for file transfer.

Note: This parameter should be changed only upon request of your network administrator since it

applies to network infrastructure including firewalls, proxy or specific TCP port translation.

Values: From 1 to 5 digits (each digit between 0 and 9 inclusive).

Note that numbers above 65,535 are illegal as the port identification fields are 16 bits long in the TCP

header. Default 21.

Syntax: Set Value: AT#FTPPORT=<value>

Get Value: AT#FTPPORT? or AT#VFTP, AT#VALL

#FTPTYPE Specify Data Type

Definition: Before transferring files from a specified FTP server, the TCP/IP stack software must specify the type of

data to be transferred within the FTP session.

Values: A for FTP ASCII sessions

I for FTP Binary sessions (upper case i letter). Default.

Note: When this value is set to A, all the data sent by the TCP/IP stack to the FTP server is made of 7

bits characters (NVT-ASCII: the MSB is set to 0). As a consequence binary data containing 8 bits

characters will be corrupted during the transfer if the FTPTYPE is set to A.

Syntax: Set Value: AT#FTPTYPE=<value>

Get Value: AT#FTPTYPE? or AT#VFTP, AT#VALL

#FTPSERV Specify FTP Server Address

Definition: FTP server address. To connect to an FTP server to download files, the TCP/IP stack software must

know the address of the FTP server that is to be used.

Values: 32-bit number in dotted-decimal notation (i.e., xxx.xxx.xxx.xxx) or

Alphanumeric ASCII text string up to 120 characters if DNS is available. No default.

Syntax: Set Value: AT#FTPSERV=<value>

Get Value: AT#FTPSERV? or AT#VFTP, AT#VALL

#FTPUN Set FTP User Name

Definition: Before transferring files from a specified FTP server, the TCP/IP stack software must open an FTP

session using a valid FTP user name.

Values: Alphanumeric ASCII text string up to 64 characters. No default.

Syntax: Set Value: AT#FTPUN=<value>

Get Value: AT#FTPUN? or AT#VFTP, AT#VALL

#FTPPW Set FTP Password

Definition: Before transferring files from a specified FTP server, the TCP/IP stack software must open an FTP

session using a valid FTP password.

Values: Alphanumeric ASCII text string up to 64 characters. No default.

Syntax: Set Value: AT#FTPPW=<value>

Get Value: AT#FTPPW? or AT#VFTP, AT#VALL

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