Mr. Waqar,

This forum is a heaven for 8052 programmers/developers and it is a place for discussion but not teaching. If you can understand this point, then there is no problem.

People here are very co-operative and they often go out of their way to help others.
Personally, I have learnt a lot from this forum, even after 10 years of professional experience and still I am learning.

I know, you are dreaming of building a PBX these days. I had designed one with 8 extentions and 2 trunk lines (both DTMF and PULSE dialing) and I was willing to help you. I sent you a schematic diagram of the SLIC portion, but I was accused of sending a fake schematic.

This is the case with me, and I don't know how did you behave with others?

We are still willing to help, but not the way you want. Many people here are professionals and they have to do their jobs/business as well. No one is free for you to design a PBX the way you want.

Kindly re-consider your attitude and we will be more than happy to give you honest and professional opinion.