Price decreases across the board for larger systems. Services explained. To help customers simplify their system management, we've updated Hosted by 3CX pricing. Read on to evaluate your options in today’s landscape. Hosted by 3CX Simplified Tier Pricing As part of our ongoing hosting improvements, we’ve increased automation across our hosting platform. We've also improved our [...]
Grok transcription, AI assistants and improved queue management. Update 9 Final delivers one of the most significant visual overhaul updates yet for 3CX, alongside powerful new enterprise call center features, expanded AI capabilities and greater flexibility for Admins, Partners and Service providers. Read on for more! Redesigned Web Client & Dialer Update 9 delivers a majo [...]
How the new AI features in Update 9 RC3 compare to Update 8. Update 9 RC3 introduces a more streamlined AI experience, making it easier to manage how your system handles calls. With a cleaner interface, improved call routing and more flexible AI controls, you can fine-tune behaviour without added complexity. From smarter prompts to better call screening and handling, everything [...]
Learn how to write effective prompts, avoid common mistakes and optimize your AI Agent for real conversations. In Part 1, we looked at the fundamentals of prompt engineering: writing instructions instead of prose, removing unnecessary definitions, avoiding contradictions and keeping prompts concise. In this blog, we'll go beyond prompt structure and focus on how AI models act [...]
Your AI Agent doesn't need a manifesto. It needs a tight, unambiguous spec. Here's how to write one. We recently rewrote our AI Receptionist's system prompt. The previous version was 450 lines long, beautifully structured, full of carefully reasoned policy - and it was eating so much of the context window that the agent had less room to actually listen to the caller! To help [...]
Stability fixes for the iOS app. 3CX iOS App V5.6 Beta is one of the smaller updates focused primarily on stability, usability improvements and resolving issues affecting day-to-day usage. Fixes and Improvements This update resolves issues affecting: Voicemail enabled/disabled state checks and corresponding UI behavior Chat truncation issues affecting certain languages Handling [...]
Security and stability improvements for the Android app. 3CX Android App V5.6 Beta is a smaller update focused primarily on security-related enhancements, stability improvements and resolving issues affecting daily usage. Fixes and Improvements This update resolves issues affecting: Security-related enhancements across the app Voicemail enabled/disabled state checks and corresp [...]
Override office hours, command-line deployment options and improved Poly headset support. 3CX Softphone V5.6 Beta (Build 1159) introduces new office hours management capabilities, expanded deployment flexibility via command-line arguments, and a new and improved Poly headset integration provided by HP, with support for additional devices. This release also includes several usab [...]
HTTP/2 Bomb — CVE-2026-49975 · Full Disclosure · June 8, 2026 A recently disclosed denial-of-service vulnerability, known as HTTP/2 Bomb (CVE-2026-49975), affects multiple web server implementations. CVE-2026-49975, also known as HTTP/2 Bomb, is a remote denial-of-service exploit against most major web servers, including nginx, Apache httpd, Microsoft IIS, Envoy, and Cloudflare [...]
Action required due to a web server configuration vulnerability. 3CX has released a security hotfix relating to a third party component. If your 3CX deployment is reachable from the public internet, apply the latest update immediately. 3CX hosted instances have already received the update. Who is Affected Deployment type Publicly accessible from the internet? Action required Ho [...]
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