"Orders on phone"... what exactly do you mean by that? Placing orders by a phone call? A smartphone ordering app? A mobile OpenERP order placement interface?

actually i'm looking for a way to start the process of taking orders on phone...we are an online portal dealing in all educational products...

I'm still not sure which one you mean.

i want to give customers this option of placing the order on phone who can't access internet and other payments modes...so is there any other way?

thanks ...will try to look into this option