Customer Service_icn Customer Services Solution Center User Portal Connect

Let's Connect

Or call: 866.586.4700

About CallTower

Connecting people everywhere since 2002

Company Culture


At CallTower, our customers matter most!


With the evolution of the telecom industry, CallTower has grown into a hosted unified communications and collaboration solution provider; changing the way people communicate around the world.

Our mission is to enable people to easily connect and get work done.

The support and patronage of our customers gets us out of bed in the morning and inspires us to exceed expectations.



CallTower exists to enable people to easily connect to transact business communications. CallTower enhances customers’ strategic and operational capabilities by integrating VoIP service, mobile applications, email hosting, unified messaging, instant messaging, audio, web and video conferencing, collaboration tools, contact center, cloud services and global networks solutions into one reliable platform.

An industry-leading provider of cloud-based, enterprise-class unified communications solutions for organizations worldwide. CallTower provides, integrates and supports cloud-based solutions, like Cisco® Unified Communications Manager, Microsoft® Skype for Business, Office 365 and Adobe Connect services for business customers.



CallTower is a dynamic and growing global unified communications and collaboration leader. We are a dedicated team of action oriented, smart and inquisitive individuals. We value creative, innovative, positive and driven people and are looking for new team members who embody these qualities.

See All Open Positions


Meet the people who bring the magic

Tom Sullivan

VP of Sales

Extremely passionate about living life without regrets. Hard working and believes in team and not “I”. Loves a challenge and doesn’t know the meaning of unattainable. Loves the beach, hanging with his boys and boating. Captain of his own ship in many ways.

Spirit Animal: Shark

Doug Larsen

Director of Software Development

Software is artistry and the cure for stupidity. Will work for food or Amazon gift cards. Tortured golf addict. Loyal to a fault. Doer of what is right not easy.

Spirit Animal: Liger “It’s like a lion and a tiger mixed… bred for its skills in magic.”

Don Lewis

Billing Manager

An avid sports fan who spends way too much time watching everything from Football to Lacrosse. He enjoys movies and spending time with family and friends. He also loves music, but has a particular affinity for 80’s hair bands, hard rock, and 70’s singer/song writer.

Spirit Animal: Raccoon

Sean Bailey

Corporate Controller

Born at a very young age he’s developed a taste for the finer things in life: Nintendo 64, GAAP accounting, recreational basketball leagues, wood working and gangster rap. He loves spending his days diving deeply into excel workbooks while listening to Beyoncé Pandora.

Spirit Animal: T-Rex

Martin Call

Senior Manager, Client Services

A man of few words.

Spirit Animal: Tiger

Matt Lym

Cisco Support Manager

He can be described as such: A sports fanatic.  Loves playing soccer due to passion and need for exercise. A real family man.  Loves spending time with his wife and 2 beautiful children. A real jokester.  Is dedicated to working hard and making his family proud.

Spirit Animal: Killer Whale

Russell Malinsky

Microsoft Support Manager

He’s just this guy, you know? Enjoys making beer and cheering on the claret and cobalt. Plays nerdy games like Dungeons and Dragons as often as possible. Once ate an entire pineapple in one sitting.

Spirit Animal: Sisyphus

Seanna Baumgartner

Marketing Manager

Fanatic idea generator, self-proclaimed life and work junkie. Chips and salsa aficionado. Convivial, buoyant, efficacious marketing collaborator.  She loves hanging out with her people, traveling and making sure nothing worth it, in this short life, passes her by. 

Spirit Animal: Hummingbird

Brett Reese

Manager of Implementations

He can be described as someone who is hard working, intelligent, likes to laugh and have a good time.  He has a thirst for knowledge and loves spending time with his family, the outdoors, triathlons, Real Salt Lake and wearing hoodies.

Spirit Animal: Dolphin

James Dastrup

Director of Infrastructure

Since he was 7, James has been building, programming, networking, and all aspects of computer administration with Microsoft, Novell, Linux, VMware, Cisco and more. Prior to CallTower, James worked at American Express, Emdeon, Genesys, and an IT consultant for others.

Spirit Animal: Moth in Relay #70

Mark Harris

Voice Network Architect

Loves traveling with his family, and is almost always working on some electronics project.

Spirit Animal: Wolf

Live Chat Upcoming Webinars