Remote Extensions Protocol Question

Discussion in 'General' started by Mirko87, Sep 15, 2009.

  1. Mirko87

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    Hi guys,
    this is my situation, I've got an Elastix PBX in an Office, and I need to create 2 more extensions in another office, this second office is in the near town...
    So that, I need to create 2 remote extensions, the new office's router will have dynamic IP, but it isn't a prblem, I'll use DynDNS..

    My question is: Can I use SIP protocol or I must use IAX2?

    In some experiments IAX2 looks more powerful than SIP, but it's hardest to find cordless IAX phone... And my doubt is: If I use SIP Protocol, and I forward all the SIP's port to one of the 2 new office's phone, the other phone will have some audio problems... It's right?


    Best Regards,
    Mirko
     
  2. ramoncio

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    Hi Mirko,
    Remember the audio is not SIP, but RTP. You also should redirect the RTP ports to the phones.
    The best way to do this is to establish a vpn between the two offices. Now you can get cheap VPN enabled routers, and even some Snom phones have a OpenVPN client included.
     
  3. Mirko87

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    Hi Ramoncio... Thank You for the reply...
    Yeah, I forget the RTP Ports... :)... But is it possible to redirect all these ports in direction of 2 phones or it is only possible to redirect the ports on an unique IP address (one phone)?

    In the late afternoon I'll think about the VPN...

    Best regards,
    Mirko
     

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