Temporary Black Boxes

IT did some upgrading last weekend w/o our brokers ... result? 3 out of 4 squawk boxes were down and it's one of those days we get to appreciate these "antique" phones that are lying around... I used local lines to contact the brokers, left the speaker on... voila! makeshift broker boxes. Keeping the line open after leaving an order is tricky: hold the line, replace the receiver, retrieve the line.