Turnkey IT Solutions toSupport Your Business

Receive the IT support you deserve.

About UsTL3 Services

Running a successful business requires the right support—we’re here to provide it. At TL3 Services, we offer a full suite of IT services for small businesses in Allen, Texas and surrounding areas. Whether you are looking to outsource your company’s technology support entirely with our managed IT services or you are interested in just a few essential services, our team is prepared to assist you promptly.

We have over 25 years of experience in the IT industry, bringing a wealth of knowledge to your business when you need technological issues resolved or new systems implemented. You can rely on us to provide on-site and remote services for your convenience, communications & call center solutions, backup & data services, cybersecurity solutions, infrastructure services, and more. We provide custom solutions tailored to your business and its unique needs, and we focus on scalable systems that support its growth.

We are dedicated to cultivating strong relationships with our clients and building long-term partnerships driven by trust, consistency, and reliability. It’s this approach to IT services that sets us apart and the reason we have customers who have trusted us for more than 20 years.

Trust our skilled team to provide the IT support your business needs. Contact us today for a free initial consultation.

More About Us

Discover the IT services that help businesses operate with confidence every day.

Core Services

Reviews

FAQs

Our ServicesWhat We Do

IT Support Services

We provide ongoing technical support and troubleshooting services for small businesses

Cybersecurity & Compliance

We provide protection for networks, data, and digital systems from unauthorized access to minimize risk and support compliance.

Communications & Call Center Solutions

We offer comprehensive solutions to manage and optimize customer interactions.

Backup & Recovery

Gain peace of mind knowing your business is prepared for hardware failures, cyberattacks, and other disruptions with our secure, proactive backup solutions.

Network & Infrastructure

We'll help you build a strong technology foundation with secure, reliable network and infrastructure solutions tailored to your business needs.

VoIP & Telecom Solutions

We can modernize your business communications with VoIP and telecom solutions that improve flexibility, collaboration, and reliability.

Technical Support

When technology issues arise, our responsive support team is ready to provide fast, effective solutions that minimize disruptions.

Onsite support

Whether it's new equipment installation, network troubleshooting, or system maintenance, our onsite team provides practical solutions where you need them most.

REVIEWSWhat Our Clients Say

It has been my good fortune to have TL3 Services as my network specialist since 2003. Hank Mastellar has always been prompt in responding to my needs. What is really great, is he can often take care of my problem remotely. He is worth every dollar we pay him.

- Harrell P., President & Attorney

Our company has worked with TL3 Services for 20+ years. We have found their customer service to be exemplary and very professional. We have been impressed with how quickly issues are resolved and managed. Hank and his team are very knowledgeable, and matters are solved very timely. They have helped us in our business in various locations and there is never an issue or delay. They are A+. It would be my strong recommendation to work with TL3 Services.

- Heather R., Education & Academics

FREQUENTLY ASKED QUESTIONSGet to Know TL3 Services

Technology plays a role in nearly every part of your business, but that doesn’t mean managing it should be complicated. If you are looking for ongoing IT support, stronger cybersecurity, or a better communication system, we’re here to help. We have put together these FAQs to help you learn more about our services and approach.

What services does your company provide?

We offer a wide range of technology solutions designed to help businesses stay productive, secure, and connected. Our services include managed IT support, cybersecurity, backup and recovery solutions, network infrastructure, VoIP phone systems, call center solutions, and onsite technical support. Our focus is on providing reliable support that helps your business operate with confidence every day.

Do you work with small businesses?

Yes! We specialize in supporting small and mid-sized businesses that need reliable technology without the expense of maintaining a large internal IT department. Our team takes the time to understand how your business operates so we can recommend practical solutions.

What is managed IT support?

Managed IT support is an ongoing service that helps keep your technology running smoothly. Instead of waiting for something to break, we proactively monitor, maintain, and support your systems to reduce issues before they impact your business. This approach helps minimize downtime, improve performance, and provide peace of mind.

Can you help protect my business from cyber threats?

Absolutely. Cybersecurity is a critical part of modern business operations, and we help organizations strengthen their defenses against a wide range of threats.

Do you provide onsite IT support?

Yes. While many issues can be resolved remotely, some situations require hands-on assistance. Our onsite support services allow us to work directly with your equipment, network, and staff when needed.