[PIC] Interface Sony Ericsson K750i with PIC Microcontroller [HELP]

[zentos]

Hi there,

I'm a newbie and tried to dial a no from MCU (16F887) to Sony Erricsson K750i. With hyper terminal connected with data cable to pc it works AT commands fine.But I couldn't communicate SE750i with MCU. I have attached schematic I used (drawn by me) and the flowcode program that I used. Please help me to get this done, really appreciate.


Supported links
https://pinouts.ru/CellularPhonesCables/sony_ericsson_service_cable_pinout.shtml

 

[zentos]

Finally Got it work with Proteus simulator. But with the same hardware setup it doesn't dial number.