Secure
deployments with Microsoft Teams integration and built‑in AI
Your phone system carries some of your organization's most sensitive conversations. CrossRealms International deploys and hardens 3CX V20 — with Teams Direct Routing and integrated AI so your team gets a modern communications platform that is secure from day one.
Global support, Chicago HQ
Businesses run on 3CX
Lower licensing costs
Per-system pricing, no per-user fees
Inbound business call
3CX AI Receptionist answers
Rings in Microsoft Teams
Hardened by CrossRealms
Transcribed & summarized
Modern communications shouldn't require three different platforms
Many organizations juggle Teams for chat, another application for voice, and separate tools for voicemail or the contact center. It adds licensing cost, complicates administration, and fragments the employee experience.
VoIP systems are common targets for toll fraud, SIP attacks, and unauthorized access. Without proper hardening and ongoing maintenance, a phone system quickly becomes another unmanaged risk.
3CX brings communications together in a single platform. CrossRealms Intl. makes sure it is deployed securely from the start.
Chat in one app, calls in another, voicemail in a third. Administration and training get harder than they need to be.
Per-user calling plans grow linearly with headcount. 3CX licenses the system by simultaneous calls, at a flat annual rate.
Toll fraud, SIP-based attacks, and exposed management interfaces turn an unhardened PBX into an open door.
Security is not an add-on tier
Every CrossRealms 3CX deployment is hardened before a single user touches it.
TLS and SRTP encrypt signaling and voice traffic to help protect conversations from interception.
Deploy on-premises, in your private cloud, or Hosted by 3CX — with restricted network exposure and centralized monitoring.
Role-based administration, multi-factor authentication, and least-privilege access across the platform.
We track 3CX security releases and apply updates promptly to keep your environment protected.
Call restrictions, geographic controls, and monitoring reduce the risk of toll fraud on your trunks.
Deployment-level visibility from a security-first MSSP.
3CX V20 is security-checked by names you already trust
3CX publishes its security program, and every release is independently examined before it reaches your environment.
Program details published by 3CX at 3cx.com/pbx/security.
Binary-level malware checks on every version
Full V20 product security assessment
Ongoing ethical-hacker vulnerability program
Source-code vulnerability analysis on each release
Business calls in Teams. Full PBX power behind them.
Teams users call 3CX users and vice versa, and Teams users dial out through your 3CX SIP trunks at competitive regional rates.
Advanced call queues, multi-level IVR, call recording, routing, and reporting — handled by 3CX.
Add Microsoft voice licensing only for the users who need calling in Teams. Everyone else stays on 3CX apps.
User sync and full Microsoft 365 integration keep directories aligned, so administration stays in one place.
Direct Routing has specific requirements, and we walk you through them during planning:
Worth Knowing: 3CX positions Teams integration as coexistence. Teams and 3CX working side by side. We design your call flows accordingly, so expectations match reality on day one.
AI that helps your team work faster on your terms
3CX's AI Edition builds intelligence into the phone system itself. CrossRealms configures it to match your workflows and your data requirements.
AI-driven voice prompts route callers, answer common questions, and operate 24/7 without manual intervention.
Sentiment analysis, call summaries, and trend reporting across agents, queues, and ring groups — in real time.
Personal assistant and AI boss-secretary features screen and prioritize calls for the people who need it most.
Call queues with callbacks, skill-based routing, SLA alerting, and wallboards keep customers moving to the right agent.
Accurate call and voicemail transcription with automatic summaries and speaker diarization on the onboard server.
Live chat, SMS and MMS, WhatsApp, and Facebook messaging land in the same platform as your calls.
3CX transcription runs on Google, OpenAI Whisper, or 3CX's own onboard server. For regulated environments, that choice matters. We help you make it deliberately, based on your compliance requirements.
3CX with CrossRealms vs. Microsoft Teams Phone
A deployment process with zero disruption
Six phases, one accountable partner — from first assessment to production cutover.
Discovery & planning
We assess your environment, licensing, call flows, and compliance requirements.
3CX configuration
We deploy and harden 3CX before any user touches it.
Teams integration & pilot
Direct Routing setup, Microsoft 365 sync, and a pilot group to validate call flows.
Provisioning & training
Phased rollout with documentation and hands-on sessions.
Testing & optimization
Feature validation and call-quality tuning across every scenario.
Go-live & support
Production cutover with ongoing support and patch management.
A security-first partner at 3CX's highest tier
The highest tier in the 3CX partner program — listed in the official 3CX partner directory.
We are a security company that deploys phone systems, not the other way around. Hardening is standard, never an upsell.
Designated in AI, Infrastructure, and Security — the three Microsoft competencies this deployment actually draws on.
We explain exactly which 3CX edition and Microsoft licenses you need — before you commit to anything.
Queues, IVRs, and AI features configured to your workflows and your data-sovereignty requirements.
Updates, monitoring, and support from a global team — long after go-live.