For B2B software/technology companies we:
1. Immediately call, qualify, filter, & warm transfer SEO and PPC generated inbound leads so that your sales team is speaking only with the those most likely to close.
2. Qualify and schedule contacts gathered at trade shows or webinars.
3. Cold call a targeted list of decision makers and schedule appointments with qualified companies.
4. Help upsell current clients & nurture existing sales opportunities through phone calls and email campaigns.
5. To be built: Think "oDesk/Elance for Sales people" - an online platform that connects businesses to freelance sales people all over the U.S. (potential for worldwide)
Sales people would be ranked, reviewed by companies who used them, and can receive certificates of expertise etc, so only the best will rise to the top.