When the switch of timer A is pressed its output supplies power through the transistor
to Timer B(no switch). timer B output goes high for 1.5s activating speakerphone relay and the inverter input keeping inverter output low. When timer B output goes low, inverter output goes high, activating redial relay for a short time before power is removed from the entire circuit by timer A. Seems a little crude, but might work, did i miss anything? any potential pitfalls?