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  1. Brekeke SIP Server and 3CX

    I need serious help. I have a Brekeke SIP Server that is handling the integration at a facility to the Nurse Call system. I need to forward calls from Brekeke to the 3CX Phone System (v.11). Whenever I do I get the following: First INVITE from Brekeke, 3CX gives 407 Proxy Authentication...