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  1. I can't hear the caller

    Yes in the router I have the port 5060 open in/out the same

  2. I can't hear the caller

    Firewall checker CX Firewall Checker, v1.0. Copyright (C) 3CX Ltd. All rights reserved. <14:34:02>: Phase 1, checking servers connection, please wait... <14:34:02>: Stun Checker service is reachable. Phase 1 check passed. <14:34:02>: Phase 2a, Check Port Forwarding to UDP SIP port, please...

  3. I can't hear the caller

    Yes is a External Call. And comes through a VOIP ISP

  4. I can't hear the caller

    I upgrade the 3cx to V10 and now when I receive a call I can hear but the other side can't hear me. Anyone can help please - I have try all ( open ports in the router, disable the firewall and so on)
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