"i mean do i have to face different standards."

Oh, most definitely YES! - and in a BIG way!!!

Try putting "Territory" into the 'Search' box and see how many times I've said, "you must check the legal, regulatory, etc issues for your territory"

You should definitely review this Thread before connecting anything to the Public telephone system in your territory: http://www.8052.com/forum/read.phtml?id=25529&top=