Hello Andy

thanks for the warning. First i am using MH88422 chip from zarlink and this chip is certified to be used to connect to the telephone line by the compnay. MH88422 is a DAA chip which correctly terminates the telephone line according to the standards of the country as the manual says and i believe it, so i actually connect it to the public telephone line and made sucessfull testings of my dialer and still my line is working FINE.

I will really appriciate if you or any other tell me any other cautions keeping in mind that i am using a certified chip for telephone line although i have not get any approvals from authorities.


Thanks for the comments on pulse dialing....


Shahzad.