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The automated clearing house, created from the merger of Voca and Link, runs two networks, one focused on online automatic teller machine business and the other on large clearing and settlement transactions.
VocaLink, which processes 8.5 billion transactions a year and links 60,000 ATMs, plans to use Troux 7.0 software to look at ways the networks could be used together.
Troux 7.0 collects technical information from across the IT infrastructure. It will help VocaLink get the most out of its IT, manage risk and support changes to its business, said Dominic Flatley, enterprise architecture manager at the company.
VocaLink has used the software to replace several modelling tools that were used to plan and manage its IT infrastructure.
"This has sustained us for some time, but the business and pace of change has grown. We needed to define new ways of working to enable us to more effectively meet these challenges," said Flatley. "This service will help us detail what we currently have while enabling us to use this information to help define and introduce change."
Gareth Lodge, European payments analyst at research firm TowerGroup, said the opportunities to rationalise were not obvious because the two networks do different things. "However, when you look at it from a more functional level, there are a lot more similarities and many automated clearing houses run ATM and clearing and settlement transactions on the same platform."