One Voice Telecom Solution | SIP, Teams, SMS, UC & E911

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In business communications, complexity has been the rule for too long; the One Voice telecom solution from Volli was designed to solve the complexity of business communications.

One vendor for SIP trunks, another for UCaaS, a third for SMS, maybe an eFax provider on the side — and then the scramble to stay compliant with emergency calling. Each solves one need but creates another problem: more bills, more portals, more contracts. According to Nemertes Research, the average mid-size enterprise manages six to eight different communication providers, and most admit it increases downtime and operational costs.

image 2 | Volli Communications

One Voice is how Volli brings order to that chaos.

SIP, Teams integration, SMS, UC, fax, and E911 aren’t separate conversations. They’re one ecosystem, and they belong under one roof.

With SIP trunking, we start at the core: carrier-grade voice, global reach, and flexible pricing without arbitrary minimums. For Microsoft Teams, Direct Routing takes over where Microsoft’s calling plans fall short — fewer hops, lower cost, better quality. IDC has reported that businesses adopting Direct Routing save up to 40% on calling costs compared to Microsoft’s native plans, while also gaining more control over routing and call quality.

SMS is no longer optional. More than 65% of consumers say they prefer texting a business over email or phone calls, and messages are opened at rates above 90%. Customers expect to text a business the same way they call it. One Voice makes that seamless by enabling texting on the same numbers you already use. UC brings it all together, letting calls move from desk to mobile to video without interruption. Faxing, still critical in industries like healthcare and finance, is built-in through encrypted cloud delivery. And for emergencies, compliance with Kari’s Law and RAY BAUM’s Act is automatic — direct 911 access, instant onsite alerts, and dispatchable location data down to the room.

Here’s what that looks like in practice:

  • SIP Trunking: Carrier-grade voice without minimums or wasted spend.
  • Microsoft Teams: Direct Routing that improves quality and reduces costs.
  • Business SMS: Two-way texting on the same numbers customers already use.
  • Unified Communications: Calls, video, chat, and conferencing tied together.
  • Cloud Faxing: Secure, compliant, and paperless.
  • E911 Compliance: Direct dialing, instant alerts, and precise location data.

What One Voice represents is not just a product suite. It’s a philosophy: communications should be complete, cohesive, and accountable. One vendor. One bill. One support line.

That is what One Voice means at Volli.

Every channel businesses depend on, unified into a single experience, delivered on a backbone built for resilience. Because the best communications system is the one you never have to think about.

Volli Communications

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