Re: Sim300cz - at commands - gprs

Re: Sim300cz - at commands - gprs

Mate, SIMCOM's SIM300cz does not recognise the MultiTech Systems' AT-Command such as FTPPORT, FTPTYPE.
Anyway thanks and I appriciate for your responses.

When I tried it on "Command Prompt-DOS" I got the following response.

================================================================================
C:\>ftp
ftp> open 212.157.119.102
Connected to 212.157.119.102.
220-***********************************************************
220- PLASTIC OMNIUM SYSTEMES URBAINS
220-
220 ***********************************************************
User (212.157.119.102none)): usr-sigma-signature
331 Password required for usr-sigma-signature
Password:
230 Logged on
ftp>

======================================================================================

Where as on Hyper Terminal It does not ask for User name or Password and I coul dnot find a way to feed the user name and password.

AT+CIPSTART="TCP","212.157.119.102","21"
OK

CONNECT OK
+IPD65:220-***********************************************************
+IPD38:220- PLASTIC OMNIUM SYSTEMES URBAINS
+IPD6:220-
+IPD65:220 ***********************************************************
AT+CIPSEND
+IPD54:421 Login time exceeded. Closing control connection.

I'm keep on trying and will see how it goes

If anything comes in your mind please let me know..

Thanks ..

Kandeepan

Re: Sim300cz - at commands - gprs

Please, help me with ip address in GSM NETWORK.
I have sim548c GSM modem.

I'm sending data like this:

AT+CREG=1 --> answer: ok
AT+CSNS=4 --> answer: ok
AT+CSTT="INTERNET","INTERNET","INTERNET" --> answer: ok
AT+CIICR -->answer: ok
AT+CIFSR --> answer: ip adres
AT+CIPSTART="tcp","193.200.51.2","8000" --> answerk
AT+CIPSEND
> HELLOW WORLD <ctrl+z> -->answer: send ok
AT+CIPCLOSE -->answer: close ok
AT+CIPSHUT -->answer: shut ok
AT+CIPSTATUS -->answer: ip initial

Everything till this point is ok. Modem is sending "HELLOW WORLD" correctly to my PC.

After a while, i want to send more data. The same way i did it before:

AT+CREG=1 --> answer: ok
AT+CSNS=4 --> answer: ok
AT+CSTT="INTERNET","INTERNET","INTERNET" --> answer: ok
AT+CIICR -->answer: ERROR !!
AT+CIFSR --> answer: ERROR !!
AT+CIPSTART="tcp","193.200.51.2","8000" --> answerk
AT+CIPSEND
> HELLOW WORLD <ctrl+z> -->answer: send ok
AT+CIPCLOSE -->answer: close ok
AT+CIPSHUT -->answer: shut ok
AT+CIPSTATUS -->answer: ip initial

Modem is sending "HELLOW WORLD" correctly to my PC, but i can't get another IP adress.

My question: How to get rid of current IP address, and get another ?
or When i will be known about taking away my ip address?
and When a new IP address expires and i will need to get a new one?

I have found in the sim548c datasheet that AT+CIICR works only when STATE is IP START:
**broken link removed**
..but i have IP INITIAL :/