One Voice by Volli is a telecom platform combining SIP trunking, Microsoft Teams Direct Routing, UCaaS, and toll-free voice to streamline communication across teams, locations, and devices.
Cloud-Based SIP Trunking Service
Volli Connect delivers cloud-native SIP trunking services built for resilience and scale. This voice solution empowers businesses to integrate with PBX and IP-based systems easily, forming the backbone of our unified telecom strategy.
Redundant ArchitectureRobust network designed for maximum uptime with geo-redurt-dant caners
Cost-EffectiveCut costs by replacing expensive phone lines and outdated PRI circuits.
Flexible ScalabilityEasily scale capacity up or down in real time to match your business needs.
High-Quality VoIP Calling
Crystal-clear, reliable calling for consistent, professional communication.
Microsoft Teams Integration
Direct routing support enables real-time calling and collaboration within Microsoft Teams.
Simple, Affordable Usage
Choose between metered or unlimited plans that flex to meet your business’s budget.
High-Quality VoIP Calling
Crystal-clear, reliable calling for consistent, professional communication.
Volli Connect seamlessly integrates with a wide range of IP-PBX systems and both digital and analog devices—ensuring full compatibility with your existing telecom infrastructure. Our nationwide redundant network delivers continuous, high-quality service with built-in disaster recovery, keeping your communications resilient and reliable.
Unified PlatformBring SIP, SMS, and UCaaS together under one streamlined ecosystem—fully managed and built for scale.
Rapid PortingFrom 2 to 2,000+ numbers—Volli simplifies complex porting with unmatched speed and precision.
Unmatched Reliability99.99% uptime, global failover, and fully redundant systems to keep your business always-on.
Volli provides SIP and cloud voice connectivity in over 50 international locations, including North America, Europe, Asia, and beyond. Whether you're expanding globally or simplifying international communications—we’ve got you covered.
Need to confirm coverage for a specific region? Contact our team for a quick check.
Empowering Collaboration in Microsoft Teams
Volli Direct gives your organization a smarter way to enable voice in Microsoft Teams. Our Direct Routing solution delivers rock-solid reliability, flexible call routing, and full control over your telecom setup—without the complexity. It’s voice for Teams, built around your business.
Enterprise-ReadyPurpose-built to support large organizations with advanced configurations, provisioning control, and global scalability.
Flexible MigrationEasily transition from legacy systems or PBXs to Microsoft Teams Direct Routing—without disruption
Meeting InsightsUnlock powerful call data and meeting analytics to drive productivity, performance, and operational clarity across your Teams environment.
Native Teams Experience
Deliver a frictionless calling experience by enabling Microsoft Teams as your complete business phone system.
Centralized Number Management
Effortlessly manage DIDs, users, and routing policies from a single intuitive portal built for enterprise-level control.
Security-First Design
From identity authentication to call encryption, Volli Direct prioritizes secure architecture that meets Microsoft’s compliance framework.
Global Reach with Local Presence
Enable Teams voice across international offices while maintaining local caller IDs and regulatory alignment in each region.
Full SupportWhite-glove onboarding, 24/7 NOC monitoring, and responsive engineering—because mission-critical communication can’t afford to fail.
Enterprise ExpertiseDecades of experience supporting complex enterprise voice deployments, with tailored solutions for regulated industries, global teams, and hybrid workforces.
Volli provides SIP and cloud voice connectivity in over 50 international locations, including North America, Europe, Asia, and beyond. Whether you're expanding globally or simplifying international communications—we’ve got you covered.
Need to confirm coverage for a specific region? Contact our team for a quick check.
Flexibility and reliability for your business communications
Volli Business is a cloud-based UCaaS solution delivering a full suite of communication tools to empower your workforce and enhance productivity.
PhoneHigh-quality audio for your business calls
MessagingStreamlined team communication with chat and SMS
Call ManagementStreamline call handling with features like auto-attendant, call forwarding, and conferencing
High-Quality VoIP Calling
Volli Business delivers crystal-clear, reliable VoIP calling built for professional-grade communication.
All-in-One Communication Platform
Volli Business consolidates calling, messaging, and collaboration tools into one unified platform.
Simple, Affordable Usage
Volli Business offers flexible metered and unlimited plans.
Desktop & Mobile Apps
Stay connected with our easy-to-use applications for both desktop and mobile devices
Seamless Cloud ExperienceA fully managed UCaaS platform that unifies voice, video, messaging, and collaboration—designed for simplicity and built for scale.
Total FlexibilityCustomize call flows, endpoints, and features to fit your team’s workflow, with intuitive controls and enterprise-grade reliability.
Volli provides SIP and cloud voice connectivity in over 50 international locations, including North America, Europe, Asia, and beyond. Whether you're expanding globally or simplifying international communications—we’ve got you covered.
Need to confirm coverage for a specific region? Contact our team for a quick check.
Request a quote today to learn how Volli’s solutions can benefit your business.
Request QuoteVolli’s One Voice platform provides carrier-grade SIP trunking with metered and unlimited plans, intelligent call routing, and geo-redundant failover—built to support modern PBX and VoIP environments.
Enable full PSTN connectivity in Microsoft Teams using Direct Routing from One Voice. Our certified SBC integration removes the need for Microsoft calling plans while supporting global call flows and compliance frameworks.
The One Voice UCaaS platform combines voice, video, chat, and collaboration into a scalable cloud communications suite. Features include softphone apps, call recording, auto attendants, and voicemail-to-email—all supported by U.S.-based provisioning experts.
Provision toll-free numbers instantly, manage intelligent routing, and activate SMS/MMS messaging through One Voice. Our toll-free suite includes fraud mitigation, reporting tools, and full compliance with STIR/SHAKEN protocols.
One Voice provides scalable SIP trunking with PBX compatibility, metered plans, and disaster recovery.
Connect Teams to the PSTN using One Voice—no Microsoft calling plans needed.
Get softphones, call recording, voicemail-to-email, and full UC tools with One Voice.
Provision and manage toll-free numbers with fraud protection and SMS/MMS support.
