SUDBURY, Mass.--(BUSINESS WIRE)--Revolabs®, the premier provider of audio solutions for unified communications (UC), enterprise collaboration, and professional audio applications, announced today it has begun shipping the latest addition to its award-winning FLX™ family, the FLX™ UC 1500 IP & USB Conference Phone with Extension Microphones. This new phone supports use in larger conference rooms than earlier FLX offerings by including two extension microphones to create a wider pick-up range