CallTower Named to Top 10 VoIP Solution Providers 2021 by Enterprise Networking Magazine CallTower was the first VoIP solution provider to offer an integrated Office 365 Native Microsoft Teams, eliminating the need to sift through unnecessary emails and enhancing productivity South Jordan, Utah, USA, March 01, 2021 (GLOBE NEWSWIRE) — CallTower, a leading provider of cloud-based, enterprise-class Unified Communications as a Service (UCaaS) and Contact Center as a Service (CCaaS) solutions for growing organizations worldwide, has been recognized as one of the Top 10 VoIP Solution Providers of 2021 by Enterprise Networking Magazine. A distinguished panel of experts, professionals, and technology leaders, including board members of Enterprise Networking Magazine, has decided and included CallTower in the list of “Top 10 VoIP Solution Providers 2021.”