Help me with sony Ericsson T290i and AT Command

Micro and mobile phones typically run at voltages around 5 volts, so
transmit data at around 5 volts.
PCs and many serial devices use a signal that alternates between +12 and -12 volts.

To convert between them we often use the MAX232 integrated circuit (chip).

The MAX232 needs a 5 volt power supply and a few capacitors to work
so needs small circuit board.

To make a converter cable you need to add wires to and from the circuit board
with connectors to suit the phone and PC.

>i wanna know another think also do u know anu information about controlling the >devices using Fbus and Mbus from nokia mobile phone coz i think it's impossible to >work with AT COmmand .

You are much more likely to succeed using AT and your T290 than Fbus or Mbus.
Nokia phones also need special cables.

i really really approtiate you and i don't know how to thank you.

i've understood now that i need max232 while i connect my T290i with pc and with Microcontroller. right so i need now to start doing this circuit and try to connect it to the mobile phone and PC and Test AT Command.

am i right or i missunderstand you ?

is this the circuit of the Max 232?

http://www.bashys-place.com/forums/showthread.php?t=23471

i'll use. if yes can now i work with my T290i cable that is in the pic.in the previous

replay?
coz i couldn't find any other cable except this cable in the picture. so i havn't tested the AT COmmand Yet on this mobile,but i can see that u r sure that it works great with the AT Command & I trust U.

oh another question Plz Does the Max 232 Circuit Support any kind of mobile as if i changed T290i can i use another mobile with the same circuit or there will be some modifications.

if u have the pic of the cable of t290i that i should have would u send it to me plz.

another thing plz:

i've a microcontroller training kit does it contain the MAX232 Circuit?

Surprise,i've just tried to connect the T290i with hyper terminals and it works Gr8 except with AT+CNMI=1, 2,0,0,0 it responds me by +CMS ERROR:303

i've searched about this error it means that not supported idon't know which is not supported but Nop, now when i tried
AT+CMGL="rec unread" and send a msg to mobile then write AT+CMGL="ALL"

it responds me the msg that was sent and the sender number !dance .

now i want to know what i should do the next step i wish u tell me.
am waiting ur replay as soosn as possible

thanks for ur time...

:-s:-s:-s:-s any replay plz

next is just connect the phone to controller and start sending sms?

easy? isnt it..

keep the commands in mind.

SendSMS:
AT+CMGS="+1324567890"> Text message Readsms:
AT+CMGR=1 ->where 1 is index you can change index to any number

DeleteSMS:
AT+CMGD=1 ->here too 1 is index

if you want more help do post best of luck.