Telsis is a VoIP company based in Billings, Montana. We provide professional voice communication services to businesses, carriers, and resellers across the United States.
Our portfolio covers the full spectrum of VoIP — from direct inward dialing numbers and toll-free lines to SIP trunking, call origination, termination, and enterprise VoIP switching. Whether you need a handful of local numbers or a full wholesale voice solution, we have the infrastructure and expertise to deliver it.
We believe great telecom service shouldn't require a Fortune 500 budget. Telsis was built to give businesses of all sizes access to carrier-grade technology at straightforward, competitive rates — backed by real people who answer the phone.
Get in TouchThree principles guide every decision we make at Telsis.
We engineer for 99.9% uptime because your business can't afford dropped calls or degraded audio. Our infrastructure is built redundant from the ground up.
No hidden fees, no confusing bills. You know exactly what you're paying for and why — with detailed call records and clear pricing.
We're not just a vendor — we're a voice infrastructure partner. Our team is reachable, responsive, and invested in your success.
We combine the technical infrastructure of a major carrier with the accessibility and responsiveness of a dedicated local team.
Headquartered in Billings, MT — all operations and support are US-based.
Numbers and trunks activated quickly — no bureaucratic delays.
Enterprise-grade infrastructure at rates designed for real business budgets.
Reach out to our sales team and we'll get you started with the right VoIP solution for your business.