Hi,

I found a web 'USB developer' talked about
controlling handphone from microcontroller
through uart (rs232) port.

But I still have some problem to make it
connect, firstly to PC hyperterminal.

my configurations ass follows:

phone pin Rxd to PC Txd Port Comm 1
pin Txd to PC Rxd Port Comm 1
pin Gnd to PC Gnd

phone pin RTS connected to phone pin CTS
phone pin DCD connected to phone pin DTR
and to phone pin DSR.

while PC running in the hyperterminal with
handshaking none and 9600 baud, parity none
8 data bit and 1 stop bit.

USB developer says, If command 'AT' is typed
on the screen there will be an 'OK' response
from the phone.

The phone has been setup to self test,
on the phone display a phone to pc connection
figure has been appeared.

Please any one have experience in this case
would like to correct my pins configuration
or other missing.

Thank you in advance.
Kurnia Brahmana.