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3CX SIP Trunk Providers – Czech Republic

These Czech SIP Trunk Providers have been tested and certified by 3CX. With no manual configuration required you can just plug and play your PBX with a SIP Trunk of your choice. Preferred SIP Trunk providers are tested against each build of 3CX. Both parties are committed to providing end-to-end support to Czech customers who choose to use the combination of 3CX with a preferred SIP Trunk.

Preferred Providers

UPC Czech VoIP Provider
Provider UPC Česká republika s.r.o
Support Cooperation Yes
Provider Type Register Based
Fax Support T38 Bypass
SI Mode
Clip No Screening Support
Anonymous Calling
DTMF Support (RFC2833)
IPV6 Ready Yes
Online Sign-Up Possible?
Online Trunk-Management Portal?
Link to Support Document N/A
302 Diversion Support
Included in Auto-Testing No

Free for up to 1 year! Select preferred deployment:


for Linux on a $200 appliance or as a VM

Get the ISO


for Windows as a VM

Download the setup file

On the cloud

In your Google, Amazon, Azure account

Take the PBX Express