problema sim900d gprs-ftp

[prodigy_tyz]

Vreau sa pun un fisier pe server de ftp si nu reusesc, ma puteti ajuta si pe mine in aceasta situatie? Multumesc anticipat...

RDY

+CFUN: 1

+CPIN: READY
at
OK
at
OK
at+creg?
+CREG: 0,1

OK
at+cgatt=1
OK
at+cstt="airtelgprs.com","",""
OK
at+cipscont?
SHOW APPTCPIP CONTEXT
+CDNSORIP:0
+CIPSPRT:1
+CIPHEAD:0
+CIPFLP:1
+CIPSRIP:0
+CIPCSGP:1
Gprs Config APN:airtelgprs.com
Gprs Config UserId:
Gprs Config Password:
Gprs Config inactivityTimeout:0
+CIPDPDP:1
Detect PDP Inerval:10
Detect PDP Timer:3
App Tcpip Mode:0

OK
at+ciicr
OK
at+cifsr
117.98.156.60
at+clport?
TCP: 2020
UDP: 3030

OK
at+clport="tcp","2021"
ERROR
at+clport="tcp","2021"
ERROR
at+clport="tcp","2021"
ERROR
at+clport="tcp","2021"
OK
at+clport?
TCP: 2021
UDP: 3030

OK
at+cipstart="tcp","124.124.124.100","21"
OK

CONNECT OK
220-FileZilla Server version 0.9.41 beta
220-written by Tim Kosse (Tim.Kosse@gmx.de)
220 Please visit h t t p : // sourceforge.net/projects/filezilla/
at+cipsend
> user iris

SEND OK
500 Syntax error, command unrecognized.
at+cipsend
> user iris

SEND OK
331 Password required for iris
at+cipsend
 Pass iris
SEND OK
230 Logged on
at+cipsend
> Mkd testt

SEND OK
257 "/testt" created
at+cipsend
> Cwd testt

SEND OK
250 CWD successful. "/testt" is current directory.
at+cifsr
117.98.156.60
at+cipsend
> Port 117,98,156,60,7,229

SEND OK
200 Port command successful
at+cipsend
> Appe file.txt

SEND OK
150 Opening data channel for file transfer, restarting at offset 0
425 Can't open data connection.