I've been wondering about this myself. In a typical, successful B2B cold call, how does the conversation actually go?
What we've found is that it's impractical to think that you'd close a sales call in one hit. A combination of phone calls and emails is important and providing customers with something of value before you push the sale is really effective. E.g. whitepapers, videos, blog posts, webinars etc.
I work for a company called GoodCall (http://www.goodcall.io) at the moment, which facilitates thousands of calls each week to businesses. We're building a tool to help businesses devise an effective call script and sales funnel and A/B test different scripts and sales processes. It also shows you your cost-per-acquisition, something that is really easy to measure with Google Adwords, but hard to do with inbound sales.