Hi, Good Morning to all !
Well... Vithal, I think U could do it
by Using a "SLIC" to interface the
circuit to telephone line and get the
DTMF tone for the numbers U dial
through a DTMF tone generator (DTMF
Trx) I guess the number is 8880 and/or
8888. don't remember the number for
SLIC.
SLIC can be Omitted by some other
circuit (I dont know it ! But heard
of..) SLIC is a bit expensive.
Regards
Vignesh Baliga