Client Central Trading is the project that deals with communication with seller and Investor. The Charles Schwab Corporation is the American brokerage and banking company based in San Francisco, California. It was founded in 1971 by Charles R Schwab, as a traditional brick and mortar brokerage firm and Investment newsletter publisher.

Charles Schwab & Corporation, operates in four main divisions :- investing, wealth management, banking, and trading. The company serves 10.755 million client brokerage accounts, with $3.362 trillion in assets. Clients can also access services online and by telephone such as :- A) Brokerage B) Account Creation    C) Maintenance D) Reports E) Inventory.

BT Billing system is a carrier grade converged billing, service provisioning and customer management platform for telecommunication service providers, ISPs, MVNOs, and wholesale carriers to launch, price, and provision their voice and data services. BT’s Billing system communicates with elements of the telecommunication network, provides these nodes with authentication or authorisation, and gathers billing event.

BT Billing system performs rating for the services, creates transaction records, and modifies customers balances accordingly. All this happens in real time, so the billing data is updated as soon as a session is completed. It acts as the nerve centre of the network services which allows charging clients for their voice calls, messages, and data transfer, thus effectively deploying triple-play on a single network.