:roll: pls help me build a ckt.1.) that will count from second to minutes the instant the called party picks up the handset, and simultaneously stop when I put down the handset. 2) a mechanism that accept a set of coins and will switch on the line, ready for dialing. In other words, i want to make a coin phone. I would be grateful if somebody would take a time even just for the first one ( called party "pick up" detection.) thank you.