Welcome to the 3CX Online Advanced Training Video Series. In this video, we shall discuss the different methods of setting up remote extensions with 3CX Phone System. Skills Covered • Remote Extensions -- General Information • Pre-Requisites • Two Ways to Provision Remote Extensions • Remote Extension using STUN • Remote Extension using SIP Proxy Manager • The 3CX Tunnel Protocol -- General Information • Handling Common Issues • Detecting SIP ALG issues • 3CXPhone as a Remote Extension Review the full course of 3CX Phone System Training Videos at http://www.3cx.com/blog/training Additional reading: • Variables used in the 3CX Phone Provisioning Templates: http://www.3cx.com/blog/support/phone-provisioning-variables/ Watch the previous video in this course 3CX Tunnel Protocol - http://youtu.be/mo8rDGtebV4 | Watch the next video in this course Bridge Configuration - http://youtu.be/C_ZI9E2JwgU