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PHD Communications is a New Hampshire based, privately held corporation in its 27th year of business providing telephone equipment, services, and internet to our customers in Northern New England. Our company is the second largest Allworx dealer in New England and the largest Toshiba dealer in New Hampshire. Allworx is an annual award-winning communications solution and the most widely sold (under 100 extensions) Voice over Internet Protocol (VoIP) and SIP system in the United States. Toshiba is a global telecom provider of both VoIP and digital communication systems. PHD’s three partners have come together to bring our customers 100 years of combined experience in the communications industry.