Business Class I/P Phone Systems

Pentegra has the knowledge and experience to consult, design and integrate a scalable unified communications solution for any application. These solutions meet the needs of organizations of all sizes, from a small office with 20 handsets to multi-site organizations with up to 20,000 users.

Pentegra offers a full suite of IP solutions that allow you to extend consistent communication services to employees in all workspaces, whether they are on a main campus, at a branch office or working remotely. A full range of call handling features and functionality facilitates collaboration and increases productivity by breaking down the barriers to communication.

Pentegra provides telephony solutions for any application. Looking to upgrade a legacy PBX platform to a converged VoIP platform? No integrator in Chicagoland has more experience with converging technologies on the IP network than Pentegra.

Marquardt School District 15 is rapidly growing and changing. Situated in Glendale Heights in DuPage County, Illinois, the District serves four communities and includes approximately 2,700 students in four elementary schools, as well as Marquardt Middle School.


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Founded in 1947, Golden State Foods has become one of the largest diversified suppliers to the foodservice industry. In 2014, Golden State Foods opened a new regional headquarters and logistics center in McCook, Illinois, relocating from locations in Lemont and...