Cntrl home appliances using telephone

[sheethal_shenoy]

Iam a engineering student trying to make a

Provision for user to control the home appliances using telephone instrument. Say the user is away from home and he want to switch on/off some lights, then he makes call to his house ,after some rings the computer recieves the cal and then the user presses any number from the keypad for which the assigned switch is turned on/off.
The problem iam facing is how to communicate with the modemn using a c-code,the hyperterminal part is working. My modem is DB-9 (RS-232),connected to com2.
Can any one please tell me if any book that would be helpfull in such programming,i'm refering c-programmer's guide to serial communication by Joe Cambell.
com2 port is assign a value 2F8-2FF(its called I/O range values) in the device manager->ports->com2. Is it the port address?
Please help.
Regards
Sheethal

[lord loh]

I am a Class XII student and only think of concepts...(no tech.)
This solution requires a PC at the other end, contrary to your idea. Never the less, it might be useful.

1) Make a dial up server speciallt for this purpose...

2) On connection, ask login & passw

3) If authenticated, Show a command prompt.

4) Get commands from remote term.

5) Parse commands and execute...

Now, a device like the ordinary modem is not ment to switch lights and fans off...

So make a special device (for USB / COM or what ever you like...) which receives instruction from the dial-upserver and executes them...

According to me, such an idea is not feasible, as it means
>> a special device
>> Special switches that turn itself off on electronic instruction
>> Lots of validations(like what if there is a power supply disconnection ?)

The system is likely to cause vitamin M problems to the customers. You are an Indian I presume. Such high-end lifestyle devices do not capture the fancies of the Indian masses...

All the best