Best VoIP Providers - Page 28

NEC Corporation of America

Backed by over 120 years of innovation and experience, NEC knows what it takes to change and stay ahead of technology's continuous evolution. It is our capability to leverage decades of award-winning technologies and research that has enabled NEC to remain an ICT leader and through problem resolution to bring new value to people, organizations and society as a whole.

NFON SIP Trunk

NFON SIP Trunk is a cloud-enabled telephony gateway that helps businesses transition smoothly from legacy PBX setups to modern, IP-based communications. By leveraging VoIP technology and NFON’s carrier network, it connects your existing phone systems—including on-premises PBXs or Microsoft Teams—to the public telephone network and cloud services without needing hardware replacements. Benefits & Features Effortless transition: Maintain your current PBX hardware and phone infrastructure while gaining the flexibility of cloud-based telephony. You decide when and how to introduce additional features. - Scalable and cost-effective: Consolidate voice and data networks to reduce maintenance costs. Easily scale call volume and branch connectivity, and take advantage of competitive telephony tariffs. - Full control via self-service portal: Configure your SIP trunks independently using an intuitive web portal—manage number blocks, routing, and external call blocking all in one place. - Security, high availability & resilience: Protect your communications with features like call-blocking and fraud detection. High availability is built in via load distribution and backup systems across PBXs, ensuring uninterrupted service. - Flexible number routing: Assign phone numbers dynamically from one number block to multiple PBX endpoints—no need to purchase new blocks, lowering cost and complexity. - Seamless integrations: Connect SIP Trunk to modern tools like Microsoft Teams (via Direct Routing or Operator Connect) and contact-center platforms (e.g., Genesys Cloud), enabling unified telephony across systems. Best Practices in the Industry - Preserve existing infrastructure while evolving: By acting as a bridge to IP telephony, businesses avoid unnecessary hardware refreshes and preserve return on prior investments. - Modular, pay-as-you-go model: Subscription-based flexibility aligns spending with actual usage, supporting both conservative budgets and scaling operations. - Built for remote and hybrid workflows: Integration with UC tools and centralized management allows distributed teams to stay connected without friction. - Operational resilience through redundancy: Load balancing across backup PBXs ensures consistent service, even during infrastructure interruptions. - Self-management for speed and efficiency: Empowered via self-service portals, IT teams can quickly adjust routing, settings, and numbers without vendor dependencies.

Norstar Cloud

UNIFIED COMMUNICATIONS Voice, messaging, video conferencing and screen sharing all in one Cloud or On-Premise

Numeración telefónica

OfficeSpaces VOIP Phone System

The OfficeSpaces.co VOIP Phone System is a modern, cloud-based business communication solution designed to replace traditional phone lines with a fully integrated, internet-powered system. Built for startups, small businesses, and growing teams, it enables organizations to manage calls, messaging, and team communications from anywhere—without the need for physical phone hardware.

Omnicus

Make the Contact Center Your Competitive Advantage. We provide you with everything you need to manage your omnichannel contact center more efficiently. Because life is too short for bad customer service experiences.

Omnivoice

Omnivoice is the fast, secure & powerful answer to your business communication needs. Users can expect: - Some of the best pricing options on the market. - Unmatched voice clarity for uninterrupted conversations. - An intuitive platform that is almost too easy to navigate. - Essential communication tools including business numbers and messaging services. - Advanced call management to optimize client interactions. - Admin tools for effective team management. All these features are backed by responsive support, ready to assist users in maximizing the platform's potential. Omnivoice aims to be the reliable communication backbone for small businesses.

OneCloud Networks

Effective communications systems are critical to every business as they respond to the demands of todays work environment.

OnSwitchIT

OnSwitch provides 24/7 technical support and cloud-based phone solutions for small and mid-sized businesses.

OpenScape 4000

OpenScape 4000 delivers converged IP and TDM infrastructure that lets you migrate at your own pace—whether maintaining on-premises control, deploying VMware-based private cloud, or implementing hybrid configurations. This architectural flexibility protects your investment while supporting modern SIP-based communications and legacy digital endpoints simultaneously. Built on proven enterprise technology with active-standby dual node architecture, OpenScape 4000 ensures zero calls lost during system failovers while supporting up to 12,000 users on a single system. Mitel licensing enables seamless portability across the entire OpenScape solution family, protecting your software investment as business requirements evolve.

OpenVBX

OpenVBX is a hosted business phone system that runs on your own Twilio account. Your team makes and takes calls from a web dialer or the Android app, builds multi-level IVR menus in a visual drag-and-drop flow builder, and handles two-way SMS in one inbox. Call flow steps include greetings (text-to-speech or uploaded MP3), menus, business-hours routing, dial, voicemail with transcription, conference, call whisper and SMS. Every plan includes virtual numbers, call logs, call recording and calendar bookings. Higher plans add click-to-call, local presence dialing, disposition codes, bulk calling and bulk SMS campaigns, follow-up automations, appointment reminders, CRM pipelines, landing pages, forms and an AI voice agent that answers and places calls. OpenVBX is built for real estate teams, clinics and loan companies. Plans are billed monthly; Twilio bills calls and texts separately.

Optus Loop Live

Optus Loop Live lets you use business phone features on your mobile or PC with a monthly subscription and the Optus Loop Live app.

Orbtalk

As one of the UK's leading VoIP providers, we provide business telephone systems for companies of all sizes.

OTG Voip Signal

Ovvoe

Aragonese company leader, specialized in business consulting services, technological, digital and outsourcing services.