t209 at command list - Rickey's World of Microcontrollers & Microprocessors

I think you are using wrong command.

CSTT is for Simcom modem not for T290i mobile.

check sony erricsson command list here:

AT Command list for ALL Sony Ericsson mobile phones

check the GPRS section for correct commands.... Read Compelte post

Posted by ajay_bhargav on Mon Jul 06 2009, 04:34 pm

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T209 at command list Items tagged with T209 at command list