ProTelesis Corporation

ProTelesis Corporation is a San Diego-based managed services provider (MSP/MSSP) born from the 2019 merger of two California telecom heavyweights - Protel (a leading Mitel Blue dealer) and Xtelesis (a leading Mitel Orange dealer). The company has evolved from a traditional phone-system business into a full-stack technology partner delivering managed IT, cybersecurity, unified communications, cloud, structured cabling, and managed detection and response. With offices across California, the Pacific Northwest, Utah, and Bangalore, it supports thousands of clients and hundreds of thousands of endpoints, with a focus on biotech, defense, and growing small-to-midsize businesses.