In a large facility where there is 22 traction elevator & 2 hydraulic ones, how could you integrate the elevators maintenance to the work order & work request system?....I mean how could the elevator operator send the work request to the maintenance dept? the only way is through phone as my guess, but how could the work request being recorded then? and how could the maintenance labor know the details of the breakdown to prepare his tools & the other requirements before attempt to go to the elevator location?. If I'm aiming to calculate the time between work request and repair start time, how?