Management Team

Chuck Griffin
Chief Executive Officer, Chairman

Chuck is the Chairman and CEO for Impact Telecom, Inc., a global provider of voice and data communications services spanning Residential, SMB, Enterprise and Wholesale markets. As one of the original founders of Impact Telecom, he has lead Impact from a start-up to a company servicing more than 200,000 customers world wide.

A business development expert, Chuck has led the Impact team through multiple M&A efforts that make up the Impact technology companies today, including the communications brands of Excel, Americatel, Startec, Matrix, and Trinsic.

Chuck began his career as VP of Sales and Operations developing a multi-region outdoor retailer company where he lead growth exceeding 1000% culminating in the successful sale to a national public retail organization.

Prior to Impact, Chuck has held multiple executive leadership positions including VP of Business Dev, VP of Sales, COO, and CEO for communications companies such as ICG Communications, Idigi Wireless, @Link Networks, and iPath Communications spanning technologies such as ATM, MPLS, Ethernet over Copper, Point to Multi-point Wireless, DIA, VoIP and SIP.

A lover of the outdoors, Chuck is a pilot and alpinist and lives in Colorado with his wife of over 25 years. Chuck has his Bachelors degree from Metro State University of Colorado in Denver.


Brian McClintock
Chief Financial Officer

Brian McClintock came to Impact Telecom in 2016 after the merger with TNCI, having joined the company as Chief Operating Officer in 2014. Over the past 18 years, he has served as CEO, COO, CFO, and Vice President of several successful and profitable professional service, telecommunications and technology companies including McGrath Systems, KDDI Global LLC, InfiniRoute Networks and New Global Telecom.

As CEO, COO, and CFO of his prior companies, Brian has developed strategic organizational plans, managed Company profitability, and led teams in designing and implementing process improvements resulting in greater timeliness and accuracy in budgeting, forecasting, reporting, and performance management. He has delivered substantial financial results and strengthened customer satisfaction, established several key strategic relationships and acquired several significant new assets.

McClintock holds a B.A. in Business Management from Lynchburg College, and a Masters of Business Administration, specializing in Finance, from La Salle University. McClintock was honored by the Philadelphia Business Journal as the 2011 CFO of the Year for small businesses.


Doug Funsch
Chief Revenue Officer

Doug Funsch has held telecommunications leadership positions spanning nearly three decades, in both financial and sales positions. Doug joined Impact in 2009 to lead the company’s new wholesale terminations group in vendor and sales management. Over the years his responsibilities expanded to oversee all financial, accounting, treasury, human resources and regulatory departments as Chief Financial Officer. Most recently he served as a lead on several successful mergers and acquisitions and headed up Impact’s corporate development and integrations initiatives.

In his role as Chief Revenue Officer Doug is responsible for all revenue-related areas driving the revenue generation process and ensuring continued growth.

Doug began his career in 1987 at GTE Corporation (now Verizon) within the Internal Audit group and quickly progressed through various financial management positions. In 1994, with a transition to sales, Doug opened the Chicago market for GTE, rapidly becoming one of their leading sales performers.

With continuing sales positions in the wireless industry at GTE TSI (now Syniverse) and onto Nortel Networks as Sales Director, Doug has constantly achieved top sales performance levels while continuing to move upward in varying management positions. In 2001, he joined Xtension Services Inc. (XSI), a wholesale termination provider in Tampa, Fl., to lead direct and channel sales efforts. While at XSI he was integral in launching several strategic initiatives covering vendor management cost reduction and financial accountability with a focus on pricing, margin control and overall account profitability.

Doug holds a B.S. in Business Administration with a concentration in Accounting from Bryant University. He is a licensed CPA in New Jersey. Doug is based in the Dallas, TX office.