Cloud Business Phone

Hosted PBX: your business phone system,everywhere your team works.

SumoFiber Hosted PBX is a cloud-based business phone system that replaces on-site PBX hardware with enterprise unified communications — iOS and Android mobile apps, auto-attendants, call routing, and local number presence in 50+ countries. Built in Utah, serving businesses since 2011.

  • 50+ country local numbers
  • Unlimited lines
  • iOS & Android apps
SumoFiber Hosted PBX running on a laptop admin console and a mobile voice app simultaneously
Desktop
Admin console
Mobile
iOS & Android
Desk phone
HD voice
Features & Functions

10 built-in calling features — no add-ons, no upgrades.

Every feature your team expects on a single cloud platform, built for businesses that outgrew analog lines but don't want to babysit on-site PBX hardware.

  • Local & long-distance calling

    Unlimited local and long-distance calling included on every seat — no surprise per-minute charges.

  • Call management

    Do Not Disturb, Hold, Transfer, and Call Park — route every call exactly where it needs to go.

  • Web-based management

    Configure auto-attendants, call queues, greetings, and routing from any browser.

  • Call logging & recording

    Detailed call logs plus optional recording for training, compliance, and quality assurance.

  • Geographic redundancy

    True multi-region redundancy keeps your phone system online even when a data center fails.

  • Unlimited lines

    Add lines and extensions as the business grows — no new on-site PBX hardware, ever.

  • Local support

    Real humans in your time zone, reachable every hour of every day — not a global tier-one queue.

  • Voicemail-to-email

    Voicemails delivered straight to your inbox so you can listen from anywhere on any device.

  • Mobility

    Take your desk extension anywhere — your office number rings on every device your team uses.

  • Conferencing

    Built-in conferencing so every meeting starts with one dial-in — no third-party bridge required.

SumoFiber Mobile Voice iOS app showing the Call History screen
SumoFiber Mobile Voice

Make any line a work line.Your office phone, on iOS and Android.

Place and receive business calls from your office number with A2P 10DLC-compliant SMS, seamless Wi-Fi to cellular handoff, and shared team history across every device.

  • Visual attendant display
  • Chat messaging
  • Seamless Wi-Fi / cellular handoff
  • Shared contacts
  • Call & message history
  • SMS messaging (A2P 10DLC)
  • Voicemail transcription
  • Maintain business identity
  • Siri integration
  • Make & receive business calls
  • Move calls with you
  • Record greetings

Business SMS requires A2P 10DLC registration.

Globe illustrating SumoFiber Hosted PBX coverage across 50+ countries
50+
Countries with Local Number Presence
International Reach

Call your customers from their area code, not yours.Local numbers in 50+ countries.

Give international customers a local number to call. Your team places and receives calls from in-country presence in 50+ countries — no roaming fees, no awkward international dial strings, no lost business to unfamiliar caller IDs.

Additional Solutions

Complementary services that pair with Hosted PBX to replace legacy hardware and bring business calling into every mobile device.

SumoFiber VoIP desk phone replacing an analog POTS line

For legacy copper lines

POTS replacement

Modernize analog phone infrastructure. Replace outdated copper lines with reliable, cost-effective fiber-powered voice — without changing the numbers your business is known by.

  • Keeps existing phone numbers
  • Works with alarms, fax, and elevators
  • No on-site PBX hardware required

For mobile-first teams

Cellular integration

Integrate business phone lines directly into your team's mobile devices. One number, one voicemail, complete flexibility on the move — with no second device to carry.

  • Ring office extensions on any phone
  • Keep personal and business separate
  • Seamless Wi-Fi to cellular handoff
Ready when you are

Transform your business communications.

Completely customizable Hosted PBX, deployed on your timeline, with a local team behind every seat.

Business professional taking a call on SumoFiber Mobile Voice
FAQ

Common questions about Hosted PBX.

  • What is SumoFiber Hosted PBX?

    SumoFiber Hosted PBX is a cloud-based business phone system that replaces on-site phone hardware. It delivers enterprise-grade unified communications — calling, voicemail, auto-attendants, call routing, conferencing, and mobile apps — over your internet connection.

  • How does hosted PBX work?

    Hosted PBX runs the call-routing software (a softswitch) in SumoFiber's data centers instead of on a box in your office. Your desk phones, computers, and mobile apps register over your broadband connection using SIP, and calls travel as voice-over-IP between endpoints. Because the platform is cloud-hosted, you get automatic failover, software updates, and new features without replacing on-site hardware.

  • Can I keep my existing business phone number?

    Yes. SumoFiber ports existing business phone numbers from your current carrier at no additional cost. Local, toll-free, and international numbers all port in — typical porting takes 7 to 14 business days, and our team coordinates the cutover so your lines don't go dark.

  • Does SumoFiber Hosted PBX work on mobile devices?

    Yes. SumoFiber Hosted PBX includes mobile apps for iOS and Android so your team can make and receive business calls from their office number anywhere with internet.

  • Does SumoFiber Hosted PBX support international calling?

    Yes. SumoFiber Hosted PBX offers local number presence in 50+ countries, making it easy and affordable for international customers to reach your business with a local number.

  • Do I need SumoFiber internet to use Hosted PBX?

    Hosted PBX runs best over a reliable business-class internet connection. SumoFiber business internet is the recommended pairing, but Hosted PBX can run over any sufficiently stable broadband connection.

  • Is SumoFiber Hosted PBX right for small businesses?

    Yes. SumoFiber Hosted PBX scales from single-line small offices to multi-location enterprises. It eliminates the cost of on-site PBX hardware and provides enterprise features at a fraction of traditional PBX pricing.

Related Services

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