The CTS project envisages a safe, secured, faster and effective system for clearing of the cheques. In the CTS the presenting bank will capture the data & images of the cheques using their Capture System which is internal to them. They have to meet the specifications and standards prescribed for data and images. To ensure security, safety and non-repudiation the PKI (Public Key Infrastructure) is being implemented across the system. The banks will send the captured images and data to the central clearing house for onward transmission to the payee/drawee banks. For that purpose RBI will be providing the banks software called the Clearing House Interface (CHI) that will enable them to connect and transmit data in a secure way and with non-repudiation to the Clearing House (CH). The Clearing House will process the data and arrive at the settlement figure for the banks and send the required data to payee/drawee banks for processing at their end. The drawee/payee banks will use the same CHI mentioned earlier for receiving the data and images from the Clearing House. It will be the responsibility of the drawee bank Capture System to process the inward data and images and generate the return file for unpaid instruments.