Any competent business person will attempt to addressh two key points when evaluating a new vendor: customer service and support, and pricing. Within your corporate culture, you will need to determine if these items are of equal importance or if one reigns higher in the food chain. If customer support is a high priority within your business model, make sure the customer service practices of your conference call provider are in step with your own standards. It may translate into a slightly higher price tag, but you are ensuring that your personnel will be treated with the same degree of respect and esteem that you exhibit to your clientele.
Just as you would do with any vendor, make sure the conference call service you select meets all the criteria relevant to the way your company conducts conference calls, and is also equipped to offer additional conference solutions as you grow and your needs broaden. The result will be a happy and productive working relationship for many years to come.