Usually involves a company's customers remitting amounts to a bank account close to the customers in order for the company to have collected funds sooner.
For example, a company with its headquarters in the Midwest, might have a bank account in New York for its east coast customers to mail in amounts owed.
Similarly, the company may also have its west coast customers remit to a bank account in California.
The company would have access to bank funds several days sooner with such an arrangement instead of all remittances being mailed to the Midwest.