3CX and Patton Smartnode 4634 beyond a router

Discussion in '3CX Phone System - General' started by nicotum, Dec 28, 2007.

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  1. nicotum

    Dec 28, 2007
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    I've already installed 3CX and the SN4634 within the same subnet without big problems.

    The problems begin because I have to use the SN4634 as a unique router for 2 subnet.
    This means that every subnet has a router that has the SN4634 as the gateway.

    LAN A --> ROUTER A --> LAN B --> SN4634 --> ADSL MODEM --> INTERNET

    The 3CX is within the LAN A (the one using VoIP).
    The Gateway is using the PSTN, no VoIP provider is configured.

    At first I was able to dial/receive a call, but unable to hear the voice.
    Enabling the 'pbx delivers audio' the voice is present.
    But if I use the HOLD function, the calling phone doesn't hear the music and I cannot return to the waiting call.

    The transfer function does not work too.

    I've played with the "bind to media server"/"external device" options without success.

    Is this a problem related to NAT or what?

    Thank you.

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