Allied Telephone and Data

Knowledge. Leadership. Experience.

Allied Telephone and Data is more than just a Baltimore telecommunications services company. Since 1988, Allied has been providing Maryland and Mid-Atlantic businesses with the highest level of telecommunications expertise. You can rely on Allied to be your business technology and telecommunications experts. Most of our customers are based in Maryland's Baltimore Metropolitan region including Anne Arundel County, Baltimore City, Towson, Baltimore County, Carroll County, Harford County, and Howard County, MD.

Our telecommunications services company serves the Baltimore metropolitan area, as well as the Mid-Atlantic region, but is available to work anywhere in the nation. One of our better known projects is the massive installation project at the Sheppard Pratt Health System in Towson, Maryland.  This was a complicated installation project which involved business project management for over 150,000 feet of new low voltage cabling (Category 6 and 5e), aggressive timeframes and an extensive amount of project coordination for voice, data, video, overhead paging, card access, security cameras and wireless access points. Our work on this project was profiled in the leading trade publication Cabling Installation and Maintenance.

Our Services

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About Us

President and owner John Shirk is a second generation telecommunications business owner as his father Jack Shirk founded Allied Telephone and Data in 1988. John has been in the telecommunications services industry all his working life. John grew up in Perry Hall, Maryland, and is proud to be serving the Baltimore metro area for all these years. John is a Certified Design Engineer, a Certified Installer, as well as a Certified Project Manager, and is dedicated to bringing the highest level of quality and expertise to every project.

Contact Us

Contact us or call our office at 410-803-0080 to see how we can help your organization with all its business telecommuncations services and data technology needs.