In this paper the prerequisites for Software Maintenance productivity analysis are described with the use of the experiences at the Bahrain Telecommunications Company (Batelco) during the years 2001-2. First the differences between software maintenance activities and IS development projects are described. Then a basic trend model is applied as well as ways to manage the expectations of the customers. To conclude, some remarks are made regarding the application of productivity analysis for the software maintenance managers. Using concepts of this case study you can assess your readiness to publish software maintenance productivity figures to your management. paper and powerpoint presentation.