Your Collaboration Stack.
Engineered Right.
Whether you're running Microsoft Teams, Zoom, or 3CX — CrossRealms is the AI, security, and engineering team behind it
Direct Routing · Phone System · Azure AI · Security
Enterprise · Zoom Phone · Contact Center · Compliance
Multi-site PBX · SIP · AI Call Handling · Cloud Redundancy
Engineering-led.
Security-driven.
Most organizations deploy collaboration platforms. Few engineer them properly. CrossRealms treats your communications infrastructure the same way we treat your security posture — with rigorous engineering, threat-aware architecture, and AI capabilities that make your platform work harder for your team.
End-to-End Collaboration
Engineering Services
From initial deployment to ongoing optimization — we own the full lifecycle of your communications infrastructure.
Real-time transcription, intelligent call routing, virtual agents, and sentiment analysis — built directly into your platform using Azure Cognitive Services and custom ML models.
Encryption, zero trust access controls, toll fraud prevention, and threat monitoring built into your communications layer. Not bolted on after.
Single-site or complex multi-location rollouts, designed and deployed to enterprise standards — on time, documented, and built to scale.
Full contact center builds including IVR design, queue management, agent tooling, CRM integration, and call analytics — at any scale.
Centralized management, geo-redundant deployments, and enterprise-grade architecture for organizations operating across multiple offices or regions.
Managed support, performance monitoring, and continuous improvement. We stay engaged after go-live because your infrastructure needs evolve.
Full Control of Your
Communications
CrossRealms holds Advanced Engineer status with 3CX — one of the most powerful and cost-effective enterprise PBX platforms available. We design, deploy, and support 3CX environments built for reliability, security, and scale.
Multi-site PBX deployments with centralized manage
Full cloud redundancy with internal failover — even if the internet goes down
SIP trunking, toll fraud prevention, and e911 portability
AI-enhanced call handling, intelligent IVR, and virtual agents
Security-hardened deployments with MSOC integration
Architected for zero downtime — local survivability keeps your phones live even during internet outages or cloud disruptions.
Compliant, portable emergency calling across all sites and remote users — no compromises on safety or compliance.
Sentiment analysis, transcription, intelligent routing, and virtual agents built on top of 3CX using Azure Cognitive Services.
We rip and replace aging "heavy iron" PBX systems — eliminating sky-high maintenance costs while modernizing your communications.
Real-World Results
See how CrossRealms engineers a modern, resilient communications infrastructure for complex enterprise environments.
Multi-Site School District: Legacy PBX to Fully Redundant Cloud
A large multi-campus education client needed to modernize aging, expensive PBX infrastructure across 6 sites — without compromising on uptime, emergency calling, or budget.
Sites Migrated
Extensions
Uptime SLA
Cost Reduction
The Challenge
- Aging legacy PBX across 6 campuses with sky-high maintenance and licensing costs
- No redundancy — a single failure could take down communications district-wide
- Non-portable e911 with no reliable emergency routing for remote or inter-campus staff
- No path to AI, modern IVR, or call analytics
The Solution
- Full 3CX Advanced deployment across all 6 sites with centralized management and a unified dial plan for 1,700 extensions
- Dual-layer cloud + on-prem redundancy — phones stay live even during full internet outages
- e911 re-architected per-site and per-user, compliant with Kari's Law and Ray Baum's Act
- AI call routing, real-time transcription, and sentiment-based IVR built on Azure Cognitive Services
- Documented the policy as a living framework with clear procedures for ongoing governance and future updates
The Impact
- ~65% reduction in licensing and hardware costs in year one
- Zero unplanned downtime since go-live — on-prem failover validated twice during real ISP outages
- Full e911 compliance across all 6 sites, remote users, and mobile staff
- ~22% reduction in average call handling time; front-office workload significantly reduced
What Sets Us Apart
We bring cybersecurity rigor and AI development capability to every collaboration engagement.
Every deployment is designed with threat modeling and compliance in mind — not added as an afterthought.
We don't just configure platforms. We build custom AI features on top of them using Azure Cognitive Services and custom ML models.
No vendor bias — only the right architecture for your needs. We work with what you have or help you choose what fits.
Microsoft, Cisco, Azure AI, and 3CX Advanced certified engineers with real-world enterprise deployment experience.
Tie your communications infrastructure directly into your security operations center — natively, not through workarounds.
We stay engaged after go-live. Your infrastructure evolves — your engineering team should too.
Engineering-grade
collaboration,
built for how you work.
Tell us your platform, your scale, and your challenges. We'll bring the engineering.