We are a team of industry experts who are ready to tackle any challenge for our customers.

Meet the Team Behind Core Telecom Systems

Brian Mesmer Director of OSP
Brian brings 20+ years of experience working at a Telco in Missouri. He is a Senior Sales Manager in the Midwest at Core Telecom and is also the Director of Outside Plant specializing in FTTH.
Lyle Frank Director of Optical Transport
Lyle has 25+ years of experience with Telecom Manufacturers and 10 years with Core serving as National Sales Director and Director of Access, Transport & Switching technologies. Lyle serves as an advisor on Core’s Board of Directors.
Shaun Plummer Director of Wireless
Shaun has been with Core Telecom for 7 years and brings over 20 years of experience. As Director of Wireless, he overseas fixed wireless and Wi-Fi vendor relationships with current and potential wireless platforms.
Rene Ehlenfeldt Director of Power
Rene’ brings 19+ years of experience to Core Telecom, where he currently serves as the Director of Power Solutions. He oversees engineering DC/AC power solutions and battery backup needs for cabinets and central office equipment.
Matt Hollinger Director of Services
Matthew brings 25+ years of experience to Core Telecom Systems, where he currently serves as the Director of Network Services. He holds numerous certifications in class5 switching, wireless, transport, DC power, and access platforms.
Jeff Mann CFO & Director of Passive Optical
Jeff Mann brings 14 years of experience with Core and currently serves as the Director of Passive Optical and CFO. He offers the best solutions on the market for the customers fiber needs.
Greg Herrman Director of Carrier Value
As Director of Carrier Value, Greg Herrman offers 20+ years in the industry. He has served in various roles at multiple service providers and sales organizations during that time.

Knowledge Base