Inside Sales is selling using the phone or the web without having to travel or see the customers and prospects face-to-face. The term 'Inside Sales' is most often used to describe selling where the Inside Sales representatives is proactive, calling on prospects and customers to sell goods and services. It can also be used to describe Sales Representatives who take orders (Inbound) where the customer or the prospect calls into the company. The opposite (outside sales or Field Sales) involves the salesperson/clerk traveling to the customer/accounts in order to make sales.
Inside Sales also gets professional product training, training on how to fact find, how to overcome objections and how to use a data base where this info can be stored. It is a professional position and can make lots of money for businesses.
It is not the same as telemarketing and the quality of the call is more important than the number of calls. The intent is to develop a relationship with the customers.