USE classical SE method to design a software Model containing

problem statement

system Diagram

top down functional diagram

permanent storage specification

User interfaces

data flow diagram

ER diagram

control flow diagram

architecture

A small cable operating firm requires a software system for their telephone based customer complaint and accounting system. The system will mainly be made to support the function of the operators sitting at the control tower. All complaints received via telephone calls will be entered by the operators in the system. The system will generate messages regarding the complaints information to the respective cable technician. Each cable technician is given a printed report for the area of his responsibility. The system at the time of data entry of the complaint must confirm if the given complaint has already been registered in the system. If the complaint has been already registered then the priority of the complaint is fixed accordingly. This is reflected in the reports given to the cable technicians. The system must handle the situation if there are multiple complaints by the same customer regarding the same address.

The operator is also displayed with an alphanumeric complaint number that he has to convey to the customer. In case of the reminder of the previous complaint by the customer, the priority of the previous complaint is adjusted based on this alphanumeric number. In case of defaulter customers the operator is prompted with the message that the complaint will not be registered for the particular customer whose dues are not clear. This is then conveyed to the customer by the operator. At the end of the working day, the cable technician reports to the operator to adjust the status of all complaints $($based on the fact if they have been fixed or not$).$ All the complaints are registered by the operator on the basis of customer ID$.$ Moreover, the system should maintain accounting data concerning the status of monthly payments by the customers. A monthly report should be available indicating the total monthly income received from the customers.