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Exploring an alternative to your Lumen voice service? Learn how Sinch helps you migrate smoothly when you’re ready.

CLOUD VOICE FOR UC

Migrate to UCaaS with Cloud Voice for Teams, Webex & Zoom

Choose Sinch Cloud Voice to start moving legacy voice to Teams, Webex, or Zoom in 1–2 days. Get Tier 1 coverage, usage-based pricing, and self-service control, along with predictable costs, 24/7 enterprise support, and flexible implementation options.

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Trusted by 200,000+ customers around the world

WHY SINCH

Enterprise migration made simple, scalable, and cost-smart

When you migrate to Sinch Cloud Voice, Sinch connects directly to major UC platforms so you can activate enterprise voice in days. You get Tier 1 quality and pay-for-what-you-use economics.

Tier 1 network reach

Covers nearly 13,000 US & Canada rate centers and carries 25 B+ monthly minutes for reliable, high-quality calls at scale.

Usage-based savings

Elastic SIP trunking means no charges for sessions or ports – only the minutes you use, plus optional bundles for predictable spend.

Self-service portal

Provision, port, and forward numbers in minutes. Control disaster recovery and reporting without tickets or delays.

COVERAGE & QUALITY

Enterprise-grade voice reach, quality, and reliability

The Sinch Tier 1 voice network spans nearly 13,000 rate centers, supports 160 M numbers, and delivers 25 B+ monthly minutes. You get clear calls and dependable uptime for every UC endpoint as you migrate to UCaaS.

  • US & Canada footprint across nearly 13,000 rate centers

  • 160 M numbers in service, 20 M+ in inventory

  • 25 B+ minutes handled each month

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COST EFFICIENCY

Usage-based pricing built for enterprises

Elastic SIP trunking removes per-session and port fees. Pay only for the minutes you use, reserve numbers at a reduced rate, or choose bundled minutes for a predictable monthly invoice.

  • Usage-based or bundled minute options

  • No charges for SBCs, ports, or concurrent sessions

  • Lower cost for numbers held in inventory

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EASE OF CONTROL

Self-service portal for effortless control

The Sinch portal lets IT teams onboard in 1–2 days, provision and port numbers instantly, and activate Network Call Forwarding for business continuity – all without provider tickets.

  • Onboard and test services in 1–2 business days

  • Instant number provisioning and porting

  • Built-in disaster-recovery call forwarding

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REAL-WORLD USE CASES

Where Sinch Cloud Voice excels

Replace a legacy voice system

Modernize premise-based PBXs like Cisco Call Manager or Mitel and migrate to UCaaS with one Tier 1 carrier for all sites and numbers.

Reduce migration risk

Spin up Sinch trunks to test Teams or Webex calling flows, endpoints, and support processes before you cut over production traffic.

Consolidate providers

Unify fragmented carrier contracts and optimize spend with nationwide coverage across nearly 13,000 rate centers.

Activate business continuity

Use portal-managed Network Call Forwarding to keep calls flowing if your UC platform experiences an outage.

KEY FEATURES

Everything you need for cloud calling

For enterprise needs beyond UC calling, Sinch can support complementary services such as eFax and analog devices, plus voice solutions for endpoints without expensive licensing.

Expansive coverage

Nearly 13,000 rate centers plus 20 M+ numbers in inventory provide local presence across the US and Canada.

Complete calling portfolio

Access telephone numbers, local and long distance calling, and toll-free services in one place.

Self-management portal

Onboard, monitor, and manage services without tickets, accelerating changes and reducing overhead.

Self-provisioning & porting

Add or port numbers in minutes, keeping projects on schedule and avoiding carrier delays as you migrate to UCaaS.

Operator Connect for MS Teams

Select Sinch inside your Teams tenant for simplified setup.

Direct Routing for MS Teams

Bring your own SBC or certified partner device to connect Teams with Sinch’s Tier 1 voice network.

Cloud Connect for Webex Calling

Integrate Webex Calling with Sinch trunks for high-quality PSTN access and flexible number management.

BYOC for Zoom Phone

Use Sinch as your carrier inside Zoom Phone to gain usage-based pricing and nationwide coverage.

Compliance & security

ISO 27001 and HIPAA compliant to support regulated use cases and enterprise security requirements.

FAQ

Answers to common Cloud Voice questions

Select Sinch as your carrier, onboard in the portal, and connect to Teams, Webex, or Zoom. Sinch uses highly available, geo-diverse infrastructure into each UC provider’s cloud instance to simplify onboarding. Most customers begin testing within 1–2 business days.

Sinch is a Tier 1 carrier covering nearly 13,000 rate centers with 160 M numbers and 20 M+ in inventory. The portal provides self-management and disaster-recovery call forwarding, and pricing is designed for enterprises.

Most customers complete portal setup within 1–2 business days, then begin testing and deployment immediately.

Teams (Operator Connect & Direct Routing), Webex (Cloud Connect), and Zoom Phone (BYOC), plus contact center providers.

Bring your own UC licenses, select Sinch as the carrier within the platform, and verify service locations are within Sinch’s US/Canada footprint.

Elastic SIP trunking bills by usage, eliminating per-session or port fees. Optional bundled minutes deliver predictable monthly costs.