This module demonstrates how easy it is to configure a supported SIP Trunk in 3CX and how to make your first call. In more detail:

5.1 Implement PSTN Connectivity
5.2 Add SIP Trunk Providers
5.3 Configure Inbound Rules
5.4 Configure Outbound Rules
5.5 Configure Outbound Rules Caller ID
5.6 Outbound Routing for Emergency Numbers
5.7 Common Setup Errors

Presented in Part 2 of our Basic Training, in conjunction with all the reading material provided on the 3CX website ( provides you with all the knowledge to pass the Basic Certification test.