Most often (unless you are exempted from the Do Not Call legislation ) outsourcing your telemarketing services needs is a much more effective business solution than opening your own in-house call center. If you try to create an in-house call center you miss out on several of the key benefits of outbound telemarketing service providers discussed in the next section (such as expertise, timeliness, cost efficacy and flexibility) in addition to having the extra disruption and hassle of a new business venture.