Sign up at Global Insight+ signup. You can start free with 5 checks a day, or prepay a top-up by card in pounds, euros, dollars or 10 other currencies (minimum the equivalent of US$50, plus UK VAT where it applies); each check then comes off your balance at the price shown on the form. For checks on your SIP trunks, you choose the checks per trunk, interoperability testing is free, and they are billed on your normal billing run.
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