 BELMONT, Calif.--BUSINESS WIRE--RingCentral, Inc. NYSE: RNG, a leading provider of global enterprise cloud communications, video meetings, collaboration, and contact center solutions, today announced a partnership with Deutsche Telekom to transform business communications for customers of all sizes. With Deutsche Telekoms extensive network presence and RingCentrals deep Unified Communications as a Service UCaaS and Contact Center as a Service CCaaS capabilities, the partnership will d 