Subscriber Management System to develop a new generation ERP system set out above. The new system will be developed with electricity, natural gas, water distribution and subscriber services for the telecom sector will be covered. ERP systems to be developed fully consolidated system will work within a structure. Develop project that will cover the following modules; - Subscriber Management System - Geographic Information System - Network Management System - Work Order Management System - Breakdown Maintenance Management System - Business Partnership Management System. The system to be integrated into Geographic Information System Location Inteligance (LI) will permit the design of reports. Business processes by integrating process-based application program that processes be developed, making analysis of the processes of the organization and recognize opportunities for improvement. The system to be developed subscribe to the creation of invoices canceled the assessment and collections, manage the tariffs, manage campaigns, debt monitoring and enforcement can be made, mobile environment, the realization of work orders, the index reading to perform transactions online, providing mobile devices, geographic information system to provide subscriber data to remain constantly up to date, network infrastructure management operations will be made. Target system; - Today's technologies are introduced, supported by Web 2.0 technology, - Service-oriented architecture that supports