Now firstly please don't remove this post as this is related with 8051 ...infact it cannot be done with 8051 knowledge..so my humble request is not to detele this from this forum.

guys i have uploaded a zip file containing a ms word file (made in 97 Ms word) .. this file contains the schematic for SLIC of One Telephone Line...

Now this schematic is made in its simplest form possible.. even for relay connections i have place the back view of relay and its make and break details are also there...

i have copied this from a 8 lines intercom system which only supports pulse dialing. So there may be some mistake in copying ...kind give your comments abt it..

Now i need suggestion should i continue using this schematic and make two such circuits and one Comparator LM3900 which can held up to 4 lines.

Now the schematic i have place is for one telephone line and for other lines same process is used...

Now i want to make connection between two telephone sets using this schematic and shift registers just to do an experiment with MT8816...

Please guide me on the programming part...

http://www.geocities.com/kababroll2003/