An inside sales rep (ISR) is a professional who works within a company's sales department to generate new leads and close deals. The job of an ISR is typically focused on making outbound calls to potential customers, but may also include emails, social media outreach, and other forms of communication. ISRs are often the first point of contact between a company and its potential customers, so it is important that they be able to effectively communicate the value of the product or service they are selling. In many cases, ISRs will work with a list of pre-qualified leads that have been identified as being likely to make a purchase. However, they may also generate their own leads by cold-calling or research.