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    Siemens PBX & Remote SIP Extensions

    NAT
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    • O
      OmniTel last edited by

      Hi There,

      I was wondering if anyone can please assist me in this. I have found multiple posts about the exact reverse of what I am trying to do, but not a single post that addresses my problem.

      First some background.

      LAN - Network 192.168.1.0/24
      WAN - Fixed 196...***

      Siemens HiPath = 192.168.1.22/24

      Now, the Siemens PBX has been setup correctly since when I connect the client phone on the LAN it work 100% with the PBX. what I am trying to achieve is that the client phone can register and operate from the WAN side by means of NAT / Port Forwading

      I have set PortForward from WAN UDP(5060) forward to 192.168.1.22:5060 and this allows the phone to register when connecting over the WAN. But I have no speech.

      The Siemens PBX uses RTP ports 29100 - 29459 by default and I would like to carry on using them. But If I setup another port forwading from WAN TCP/UDP(29100 - 29459) forward to 192.168.1.22:29100 I still get no audio

      Has anyone successfully allowed the NAT / Port Forward for a phone client into a LAN network? All other posts is where people have issues with no voice connecting to an external SIP provider. is 1:1 or outbound NAT required in my case?

      Any help would be appreciated.

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