Setting Baud Rate for Modem connected to 89c52 ?????

Dear members,
I am familiar with at list commands for modem.
I need to configure modem that is connected to uC 89c52 @ 1200.
Here modem needs to be configed @ 1200,n,8,2.
How to do that by using commands from 89c52?

Regards to all

I got it

I got the soultion.