GSM Based Billing System is an automated system for managing bills. It utilizes GSM technology to send messages to customers on a regular basis informing them of their bills and due dates. It also allows for remote access to the billing system and real-time monitoring of customer usage. Additionally, it can be used to provide alerts for low balance, as well as provide power saving mode. GSM Based Billing System is a great way to save time and money and ensure accurate billing. A GSM (Global System for Mobile Communications) based billing system is a software that allows businesses to bill their customers using their mobile phone numbers.

The system typically includes the following features:

1. Customer registration: This module allows customers to register their mobile phone numbers with the system and create an account.
2. Billing: This module allows businesses to bill customers for goods or services, using their mobile phone numbers as the unique identifier.
3. Payment processing: This module allows customers to make payments using their mobile phone numbers and the system processes the payments and updates the account balance.
4. SMS notifications: This module sends SMS notifications to customers when their account balance is low, when a payment is received, or when a payment is overdue.
5. Reporting: This module allows businesses to generate various reports such as customer account balances, payment history, and sales.
6. Integration with other systems: This module allows businesses to integrate the GSM billing system with other systems such as inventory management systems, accounting systems, and point-of-sale systems.
7. Security: This module ensures the secure handling of sensitive information such as customer account information and payment details.
8. User interface: This module is responsible for the presentation of the system to the users, including the design and layout of the website or the application.
9. Mobile compatibility: This module allows businesses to access and manage the billing system from anywhere using their mobile device.
10. Multi-language support: This module allows the system to support multiple languages, making it easier for users who speak different languages to use the system.

Software requirements:

• Interface                                   :         HTML, CSS
• Client-side Scripting                :         JavaScript
• Programming Language           :         Java
• Web Applications                     :         JDBC, JNDI, STRUTS
• IDE/Workbench                      :         Eclipse with MyEclipse Plug-in
• Database                                  :         Oracle/Access
• Server Deployment                  :         WebShpere/Tomcat