DUBLIN--(BUSINESS WIRE)--Research and Markets (http://www.researchandmarkets.com/research/4grt6f/_regional_growth) has announced the addition of the " Regional Growth Opportunities for SIP Phones" report to their offering. The SIP phone market continues its fast-paced evolution reaching new customer segments and delivering more functionality to businesses. Adoption rates for SIP devices have been increasing with most SIP phone vendors reporting double-digit year-over-year growth rates in terms