Granite provides voice, data and other related communications products and services to multi-location businesses and governmental agencies throughout the United States and Canada. Granite furnishes services to more than two-thirds of the Fortune 100 companies in the United States, and 1.75 million voice and data lines under management.
Plain Old Telephone Service
Granite Guardian Managed Services
Granite Merged Voice Services - Emulated POTS, UCaaS
National Account Manager
100 Newport Ave Extension
Quincy, MA 02171