This looks more like payment processing, I'm thinking more along the line of internal banking platforms that talk to processors like Visa, Discover, AMEX. It's almost impossible to get around the below if your bank does anything with credit cards.

    American Express IP 
    First Data Corp - FDC - FDMS - North Platform (CardNet) 
    MasterCard Internet Gateway Service - MIGS USA 
    Nova - US Bancorp 
    TSYS - VITAL (VisaNet)  
    First Data Corp - FDC - FDMS - Nashville Platform (ENVOY) 
    First Data Corp - FDC - FDMS - Omaha Platform (FDR) 
    First Data Corp - FDC - FDMS - South Platform (NaBANCO) 
    NOVUS (Discover)