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  1. phema

    "Could not start audio source" ERROR...Help! :)

    Hello, I'm a 3CX Professional user and lately one of the PCs with the new V18 client installed is giving me the "Could not start audio source" error. I've been reading posts here that couldn't help me. My server is last version hosted on Windows 10 machine. On the client latest version of...
    • phema
    • Thread
    • audio error help source
    • Replies: 3
    • Forum: Web Client

  2. Forbidden Calls

    Our system has been working fine for years but suddenly we have a very strange issue where for periods throughout the day all outgoing call attempts received the error: Call or Registration to <external no.>@(Ln.10001@Gamma) has failed. <Gamma IP> replied: 403 Forbidden-Source Endpoint Lookup...
    • beneal86
    • Thread
    • endpoint firewall forbidden gamma lookup outbound sip source
    • Replies: 8
    • Forum: Other
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