SIP Trunk Configuration Instruction with 3CX
Introduction
This SIP Trunk Configuration Instruction with a 3CX Example Configuration provides you with a step-by-step SIP Trunk Configuration of ProSBC with 3CX systems, using the Web Portal configuration tool. Complete the general installation configuration steps, before you begin configuring your specific scenario. In this guide FQDN (telcobridges.3cx.ca) is configured in the 3CX server. Learn how to configure the SIP Trunk in 3CX for ProSBC from Adding ProSBC as a SIP Trunk in 3CX Server
3CX SIP Trunk Example

Configuration Steps
(Step 1) Create IP Network
(Step 2) Create Protocol Stack
(Step 3) Create Call Route
NAP Configuration
See Create SIP NAP
At this point, you must create two NAPs, one SIP NAP will be a 3CX NAP, and the other NAP will be for a SIP trunk provided by the ITSP.
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