Best Telecommunication Software

Zoom Phone is a cloud-based VoIP business phone system that lets users call, text, and fax from the Zoom desktop app, mobile app, web, or compatible desk phones. It provides traditional PBX features such as call forwarding, transfers, ring groups, unlimited auto attendants and call queues, plus AI-powered voicemail transcription, call summaries, and an AI receptionist that can greet and route callers.

Zoom Phone is offered as a standalone add-on or bundled into Zoom Workplace plans alongside meetings, chat, and whiteboards. Coverage spans more than 49 countries through Zoom's own PSTN service or bring-your-own-carrier options. It suits small teams up to large enterprises, with higher tiers adding single sign-on, device management, and data governance controls.

3CX is a business communications platform providing PBX calling, video conferencing, live chat, and SMS/WhatsApp messaging from one system. It can be self-hosted on-premises, deployed in a private cloud, or run as a 3CX-hosted instance, and it includes a call flow designer, call center features like queues and recording, and AI-based voicemail and call transcription on higher tiers.

Unlike most per-user cloud phone systems, 3CX is licensed annually per system based on simultaneous call capacity rather than per user, which can lower costs for organizations with many extensions but fewer concurrent calls. 3CX removed its free entry-level tier in early 2026, moving all customers to paid PRO or Enterprise licensing. It integrates with Microsoft 365, Google, and CRMs like Salesforce and HubSpot.

Avaya is a longtime enterprise communications vendor offering a portfolio that spans cloud, on-premises, and hybrid deployments. Its core unified communications product, Avaya Cloud Office (delivered in partnership with RingCentral), bundles calling, team messaging, and video meetings into one app, while Avaya Aura and Avaya IP Office serve customers who prefer on-premises or private-cloud voice infrastructure. The newer Avaya Infinity platform adds AI-driven omnichannel customer experience orchestration.

Avaya Cloud Office publishes tiered per-user pricing with unlimited domestic calling, HD video meetings, CRM integrations, and AI-generated call notes and summaries on higher tiers. Avaya serves small and mid-sized businesses through Avaya IP Office and large enterprises across healthcare, education, finance, and government through its cloud and on-premises platforms, with global availability in more than 40 countries.

Mitel is a longtime enterprise communications vendor providing voice, collaboration, and contact center solutions across on-premises, hybrid, and private cloud deployments. Its main platforms include MiVoice Business for enterprise-grade voice and mobility, and OpenScape Voice and OpenScape Business (from its 2023 acquisition of Unify) for carrier-grade and SMB-focused communications. Mitel does not publish self-service pricing; customers get custom quotes through Mitel or its partner network.

Mitel previously sold a cloud UCaaS product, MiCloud Connect, but that business was acquired by RingCentral in 2024 and is no longer sold on Mitel's site. Separately, Mitel filed for Chapter 11 bankruptcy in March 2025 and completed a financial restructuring in June 2025, reducing debt by about $1.15 billion and transferring ownership to its lenders, while continuing to operate and serve customers.

Microsoft Teams Phone is a cloud-based phone system built directly into Microsoft Teams, letting organizations replace a traditional PBX with calling, voicemail, auto attendants, call queues, and call transfer inside the same app used for chat and meetings. It includes AI features such as intelligent call recap, real-time summarization, and Copilot-assisted call insights, along with automatic voicemail-to-text transcription.

Teams Phone is sold as a base add-on with several PSTN connectivity options, including Microsoft Calling Plans with bundled minutes, pay-as-you-go metered calling, Operator Connect, and Direct Routing for existing carriers. It is backed by a 99.999% uptime SLA and integrates with Azure AD for identity and compliance controls, making it suited to small businesses through large global enterprises already using Microsoft 365.

Webex Calling is Cisco's cloud-based business phone system (cloud PBX) that lets users call from the Webex app, desktop, mobile, or Cisco IP phones. It includes core PBX features such as hunt groups, auto attendants, call queues, visual voicemail, and shared lines, plus AI-powered capabilities like an in-call AI assistant and call summaries. It is managed centrally through Cisco's Control Hub and is built for high availability with a 99.999% SLA.

It is available as a standalone Webex Call plan or bundled with Webex meetings and messaging in Webex Suite. Domestic calling is available in more than 65 countries, with flexible PSTN options including Cisco Calling Plans, cloud-connected carriers, or a customer's own carrier through a local gateway. It targets small businesses through large enterprises.

Netcracker Technology is a digital transformation software provider, wholly owned by NEC Corporation, that builds BSS and OSS solutions for communications service providers and other industries. Its Netcracker Digital Platform is a cloud-native, decomposable suite covering lead-to-cash business processes, service and network lifecycle automation, digital commerce, charging, and 5G monetization, available as SaaS or on private, public, or hybrid clouds.

Netcracker targets large telecom operators and adjacent industries such as utilities, satellite, finance, and smart cities, supporting business models like B2B2X, Network-as-a-Service, and MVNO-in-a-box. It does not publish public pricing; engagements are structured as enterprise software and services contracts. The company is headquartered in Waltham, Massachusetts, and has been serving service providers for more than 25 years.

MirrorFly is a communications platform as a service (CPaaS) that provides chat, voice calling, and video calling SDKs and APIs for companies that want to build their own branded messaging experience rather than adopt an off-the-shelf app. Unlike many chat API providers, MirrorFly can be deployed entirely on a customer's own servers, private cloud, or data center, giving organizations full ownership of their data and source code, in addition to a standard cloud-hosted option. The platform covers one-to-one and group messaging, threaded channels, HD voice and video calling with screen sharing and recording, file sharing without storage caps, and features like message translation, emoji reactions, and AI-based content moderation.

MirrorFly ships with SDKs for Flutter, Kotlin, Swift, React Native, Angular, JavaScript, React.js, and Objective-C, and supports single sign-on through SAML, OAuth, and LDAP, role-based access control, audit logs, and AES and SSL encryption. It can be fully white-labeled with a customer's own branding and integrates with more than 100 third-party tools. Deployments can go live in as little as 24 hours. MirrorFly is aimed at enterprises and regulated industries, including banking, healthcare, telecommunications, and e-commerce, that need a customizable, self-hosted alternative to consumer chat apps. Pricing starts with a free Easy plan for basic chat, an Essentials plan priced from around $399 per month for 5,000 monthly active users, and a Premium plan that adds voice and video calling, with custom Enterprise pricing for larger deployments.

Amdocs is a technology company that builds software platforms and provides managed services for communications, media, and financial services companies, primarily telecom operators. Its offerings include the Amdocs Product and Pricing Catalog for managing complex pricing and bundling, CatalogONE for telecom offer management, an AI-driven aOS agentic operating system, customer experience and network-focused platforms, and services spanning 5G deployment, eSIM orchestration, and cloud and mainframe modernization.

Amdocs sells to large enterprise customers such as major telecom carriers, and does not publish self-service pricing; engagements are typically structured as software licensing combined with long-term managed services agreements. Its platforms are delivered as SaaS or on private cloud, and it works with operators including AT&T, Telefonica, and Globe.