There is no current way to launch Receivables (or Payables), or switch the screen context from another application, and instantly display a specific customer. The only tool that might be able to provide something along those line would be GridView acting as an automation server.
Adagio SQL-Synch might be used to mirror the customer database if the telephone software can connect to an arbitrary SQL dataset for it's customer display.
Adagio is not designed to be used in a call center.
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Andrew Bates