ijaz that's a good link and a good advise for 8880 chip, i will be looking this chip in detail in next few day andi if i have any question i will post it in a new thread on this forum.

thanks babar for your offer for assistance i will definately use it.

ijaz if you come up with any think which interfaces a ISD chip to the dialer chip please let me know over here or on the email address

shahzad73@hotmail.com

thanks