def receive_character(self):
current_ring_time = time.time()
if self.previous_ring_time == -1:
self.previous_ring_time = current_ring_time
self.previous_call_time = current_ring_time
def receive_character(self):
current_ring_time = time.time()
if self.previous_ring_time == -1:
self.previous_ring_time = current_ring_time
self.previous_call_time = current_ring_time