VoIP issue with SSG5



  • Hi everybody,

    I have got a very strange issue and couldn’t manage to fix it. Maybe someone can help me with this?

    I have a FreePBX behind the NAT-ed Juniper SSG5. SSG5 configuration is pretty simple, Untrust zone, Tryst zone, NAT, DHCP and policies allowing traffic forth and back. So, VoIP works OK unless something is happening and afterwards I cannot hear other side and vice verse, independently on who’s calling. Meanwhile, FreePBX receives signaling information and displays every line change status, so I assume the issue is with RTSP traffic (which makes sense).

    First, I was trying to fix FreePBX, thinking it not configured properly. However, someday I tried rebooting Juniper and noticed that after rebooting it VoIP works fine unless another something. I tried finding answer in forums, tried enabling/disabling SIP ALG - no success.

    Has anybody had similar experience and solved the issue?

    Thank you in advance,
    Taron


 

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