Management Team

John Hagan

John Hagan

Founder & CEO

As founder and CEO of TeleData Select, John is leveraging his 30 years of experience in the broadcasting and telecommunications industries to help his customers meet their office and mobile telecom needs.

Previously, John worked at Paetec Communications (now Windstream), XO Communications, and in marketing roles at ABC Radio and National Cable Communications.

As an active senior member of Atlanta Lions Club and its former treasurer, John has helped raise awareness and funds for the visually impaired. Through this national organization, John has also given his time and effort to its community service projects ranging from cleaning up local parks to providing supplies to natural disaster victims.

He holds a Bachelor of Communications degree in Radio Television Management from Ohio University.

Mary Dooley

Mary Dooley

Managing Partner

As managing partner of TeleData Select, Marilyn Dooley is able to visualize creative telecommunications solutions that increase our customers’ bottom lines.

Prior to joining TeleData Select, Marilyn was the founder of Telco Management Group, a sister company that offers premier telecommunications consulting from 100+ independent agents throughout the southeast.

Marilyn has worn many hats in her telecommunications career. She started one of the country’s first independent sales agent programs, marketed long distance services and managed multiple large call centers.

Her focus on the indirect channel drove her to build an organization that currently serves agents nationwide, and her articles are regularly published in Phone+, Intel Card News and Telecom Reseller magazine.

Don Miller

Don Miller

Program Manager

Don has 30 years of experience implementing IT projects for Telecom, Financial Software and Insurance companies in the US and abroad. Most recently, his management has focused on network infrastructure procurement and installation.

Don recently moved from Seattle to be closer to family and friends and change his career focus. Hoping to bring his Fortune 500 experience to small and medium-sized companies.

He holds a Bachelor of Arts degree in Business Management from Ohio University.

Hannah Crim

Hannah Crim

Hannah is the Director of Operations at TeleData Select. Her experience in business administration, customer support, and marketing, as well as her organizational skills, allow her to efficiently support the sales team while overseeing the daily operations. She holds a Bachelor of Science degree in Business Administration from Florida College and enjoys working to improve customer relations and day to day processes.

Hannah strives to develop a good relationship with everyone she encounters and is always ready to help. With a strong belief that work-life balance is essential to happiness, she enjoys having a cup of coffee, shopping, and is always up for a trip to the beach.

Jay Johnson

Jay Johnson

Director of Service Delivery & Engineering

Jay Johnson has been working in the Information Technology industry for over 20 years.  As Director of Service Delivery & Engineering for TeleData Select, Jay is responsible for making sure TeleData Select’s quality focused installation processes are always focused on the simplification of the complexities around our customer’s communication services changes or upgrades.

Prior to joining TeleData Select, Jay has worked with  Scientific Games, Procure, and Fortune 500 companies.  Jay also has extensive experience in building, designing and installing voice and high speed data networks. As well as installing fiber optics.

Jay has a passion for doing things right the first time, making sure our customer’s data rooms and installs not only function perfectly, but look great.       


“At the end of the project, our results were staggering”

Rolta Advizex is a leading Hybrid Cloud solutions provider with over 10 offices located in the Midwest and Northeast regions of the US. Over the past couple of years, many of our office leases were expiring and we were evaluating moving them into new locations. We determined that this was the right time to review our current network and phone solutions that support each location based on performance, capabilities and cost. TeleData Select helped us perform a thorough cost analysis on all of our voice and data lines as well as phone systems and recommended new more cost effective alternatives. At the end of the project, our results were staggering:

– Installed redundant internet connections with 5-10x the previous amount of bandwidth at less than 50% of the previous costs
– Migrated all offices to a single, hosted VOIP system which also provided nearly $100K of annual savings in web and audio conferencing
– Removed all dedicated voice circuits and POTS lines tied to phone and fax services
– Implemented SD WAN to replace MPLS circuits for interoffice connectivity
– Eliminated over 25 monthly bills and vendor contracts

Aaron Tomlinson – Rolta Advizex

The time spent and the thorough analysis of our problem by TeleData Select was really a game changer for us

“Our staffing firm Express Professionals located in Atlanta, GA provides temp, temp to hire and permanent placement for employees throughout the Atlanta Area. We are dependent on the phone and need quality service for voice and data services. So after spending months dealing with ATT trying to fix the quality of our voice lines, I reached out to TeleData Select to help fix a major issue we had with our voice lines. After we tried for months to get someone to help us with lots of finger-pointing, we turned to John Hagan and his team and TeleData Select. The time spent and the thorough analysis of our problem by TeleData Select was really a game changer for us. I would recommend Teledata Select to anyone needing a consultative analysis due to phone issues or to any company just looking to save money with their telecom and data services expenses.”

– Eric Watson, Owner, Express Employment Professionals

…the owner of TeleData Select did a great job

“John Hagan, the owner of TeleData Select did a great job supervising our low voltage cable install; the job was done quickly efficiently and for a fair price. I am more than happy to recommend to my clients who need telecom services, TeleData Select.”

– Stuart Rosenthal, Rosenthal & Kaplan Certified Public Accountants

…very happy with TeleDataSelect!

“We worked with TeleData Select to help choose a phone system. The phone system has worked out beautifully for our firm, it is scalable as we grow. We plan on growing to 15-20 attorneys in the near future. We are very happy with the phone system and very happy with TeleData Select.”

– Scott Rogers, Rogers Law Office

Fantastic to work with

“….we are delighted with our new phone system. Working with (Teledata Select), the system has been configured with exactly the functionality we were hoping for. Chris and his team have been fantastic to work with. I especially love the fact that it is now seamless between our locations Norcross and Dobbins, which was a key goal.”

– Mike McCarthy, Pirtek

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