When running a telemarketing campaign the most important part is the data. The businesses and people you're calling are the ones that will ultimately result in sales. It's the reason you're running the campaign in the first place; to produce results. Sales, leads, market research or whatever your goal for the campaign might be.

To ensure your telemarketing campaign is a success you need to source the right data. If the numbers you call are out of date, incorrect or not your target market then you're wasting time. The right data will affect your conversion rates and can make the campaign completely successful.