PBX appliances,
pre-configured and ready to deploy.
From compact SBC/PBX combos to rack-mount redundant systems, every Cal4Tell appliance ships with 3CX and Debian pre-installed, managed from a single cloud portal.
Deployed and
trusted by partners
worldwide.
3CX Certified Partner
SIP Trunks Supported
Countries Deployed
Support
PBX appliances, powered by 3CX.
All the features, less admin.
Running 3CX on-premise doesn't mean building your own server or hosting it in an office closet. Every Cal4Tell appliance ships with 3CX and Debian pre-installed and is managed remotely from a single cloud portal — plug it in and you're set.
PBX Appliances
Built for teams that can't go down.
From the compact NX32 Lite to the redundant, RAID-backed NX256RR, every appliance in the NX series ships with 3CX and Debian pre-installed — ready to support anywhere from a handful of extensions up to full enterprise deployments.
- Up to 800 users on a single appliance (256 SC license)
- Dual power supply and RAID redundancy on enterprise models
- Officially 3CX certified hardware
Session Border Controllers
Secure the edge, connect every site.
Dedicated SBC appliances that secure SIP traffic at the edge, bridge separate 3CX instances together, and connect remote offices and remote workers back to one system.
- Encrypted tunnel for Windows, Mac, iOS, and Android 3CX apps
- Bridges multiple 3CX installations
- Cloud portal remote management
VoIP Gateways
Bridge legacy lines to modern VoIP.
Analog FXS/FXO gateways connect legacy phones and lines to a SIP-based system; digital gateways bridge PRI/T1/E1 and ISDN circuits straight into VoIP — both fully compatible with 3CX.
- 4 to 32 FXS/FXO ports, by model
- Up to 120 concurrent calls on digital PRI/T1/E1 gateways
- 512 routing rules with built-in failover
Call Center Headsets
All-day comfort for every agent.
The HS-M21 AI and HS-D21 AI pair a dual-microphone array with Smart Acoustic Filter Technology for 99% noise cancellation, plus hearing-protection technology that caps harmful loud sounds at 118dB SPL.
- 99% background noise cancellation
- Hearing protection capped at 118dB SPL
- In-line call controls — answer, mute, volume
Support that doesn't clock out.
24/7 support comes standard, backed by installation, one-time, annual, and extended-warranty support packages for whatever your deployment needs.
Not sure which appliance fits?
Tell us about your call volume and site count and we'll help you scope the right hardware — backed by 24/7 support.